{"title":"Science Gifts For Adults","description":"","products":[{"product_id":"astromedia-build-a-copernican-orrery-stem-construction-kit-for-age-13","title":"Astromedia Build a Copernican Orrery STEM Construction Kit for Age 16+","description":"\u003ch2 class=\"MsoNormal\"\u003eWith this fantastic kit you can demonstrate the orbital movements of Mercury, Venus, and Earth around the Sun, as well as the orbit of the Moon around the Earth.\u003c\/h2\u003e\n\u003cp class=\"MsoNormal\"\u003eTraditionally, orreries are made from brass or wood, or a mixture of both. They demonstrate the relative movements of the planets of the solar system and the phases of the moon round the Earth to a very high degree of accuracy through an exact arrangement of gears and ratios.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eUnlike other DIY orrery kits, this one is composed of high-quality card with wooden planets and a large LED powered sun. One turn of the crank represents one week and shows the relative movements of the heavenly bodies accurately. \u003cbr\u003e\u003cbr\u003eThe 4.5cm illuminated Sun in the centre helps demonstrate the seasons, phases of the Moon, eclipses and much more. This amazing kit creates a fully functional orrery. It demonstrates the movements of Mercury, Venus, Earth and the Moon around the Sun. A fantastic kit that never fails to impress!\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eCurious Minds Did You Know:\u003ci\u003e \u003c\/i\u003e\u003c\/b\u003e\u003ci\u003eCopernicus wasn't actually the first to suggest heliocentrism. Despite Copernicus being the one who introduced the idea to the modern world it had already been discussed by several Islamic and ancient Greek scholars hundreds of years ago.\u003c\/i\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eAbout the Copernican Orrery:\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eThe mechanical planetariums of modern times are almost all based on the ideas of Nicolaus Copernicus (1473 - 1543), who assumed the Sun to be the centre of the universe. He taught that the Earth makes three movements: it rotates around itself once in 24 hours, moves in a circular orbit around the Sun in a year, and with a third movement rotates its axis so that it always points in the same direction and not pointing to the Sun. In the early 18th century, the Earl of Orrery and other English nobles commissioned mechanical crank-driven planetary models from watchmakers, which have since come to be known in English as Orreries.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eThe Copernican Orrery shows the movements of the inner planets Mercury and Venus, as well as the Moon and the Earth. The Earth rotates around its inclined axis, which always points in the same direction. One full turn of the crank on the gears made from rubber belts and grooved wheels corresponds to one week. It causes six different simultaneous movements, which are in approximate proportion to the actual orbital periods.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eMany celestial processes can be explained from the Copernican (heliocentric) point of view, e.g. the Sun's movement through the zodiac or the conjunctions of Mercury and Venus with each other and with the Sun. In a darkened room the Sun with its brightly lit LED not only shows the change of seasons, but also the formation of the phases of the Moon, the eclipses, and the crescent phases of Venus.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eThe kit includes: \u003c\/b\u003eAxles, magnets, pulley belts, planets, bearings, and an LED light\u003cbr\u003e\u003cbr\u003e\u003cb\u003eHeight: \u003c\/b\u003e29.5 cm\u003cbr\u003e\u003cb\u003eDiameter: \u003c\/b\u003e29 cm\u003cbr\u003e\u003cbr\u003e\u003cb\u003eConstruction time: \u003c\/b\u003e30-70 hours (depending on experience)\u003c\/p\u003e\n\u003cp\u003eSuitable for ages 16 and up.\u003c\/p\u003e","brand":"Astromedia","offers":[{"title":"Default Title","offer_id":32914797527084,"sku":"002653","price":53.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0326\/3840\/2604\/files\/002653-Astromedia-Copernican-Orrery-1.jpg?v=1727536270"},{"product_id":"astromedia-build-a-working-galileo-telescope-stem-model-kit-for-age-8","title":"Astromedia Build a Working Galileo Telescope STEM Model Kit for Age 8+","description":"\u003ch2 class=\"MsoNormal\"\u003eBuild your own telescope, just like Galileo!\u003c\/h2\u003e\n\u003cp class=\"MsoNormal\"\u003eGalileo is famous for being the first man to point a telescope at the night sky. With this simple kit you can build yourself a telescope with an upright image, like the one he used in the 17th century. Can you find the moons of Jupiter, like Galileo did?\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eThe factor of magnification is 10x, ideal for Moon craters and even the moons of Jupiter.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eA Galilean telescope uses a convex objective lens and a concave eyepiece lens. This has the advantage of producing an upright image, but it also limits the field of view significantly. The lenses of a Kepler telescope on the other hand are both convex, producing an upside-down image, which is no problem for astronomical observations. At the same time the field of view is MUCH larger! With the \u003ca href=\"https:\/\/curiousminds.co.uk\/products\/the-kepler-telescope?_pos=1\u0026amp;_sid=11c6ddfb9\u0026amp;_ss=r\" title=\"Build Your Own Kepler Telescope\"\u003eBuild Your Own Kepler Telescope Kit\u003c\/a\u003e, you can make the comparison yourself!\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eWhen paired with the \u003ca href=\"https:\/\/curiousminds.co.uk\/products\/small-solar-filter-film?_pos=1\u0026amp;_sid=47d879d26\u0026amp;_ss=r\" title=\"Small Solar Filter Film\" rel=\"noopener\" target=\"_blank\"\u003eSmall Solar Filter Film\u003c\/a\u003e, the Galileo telescope can be used for observing sunspots during the day.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eThe Galileo telescope is easy to build and is ideal as teaching material in Secondary Schools. It can be used for group and project work on the subject of astronomy and physics.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eExtra Information:\u003cbr\u003e\u003cbr\u003e\u003c\/b\u003eGalileo did not invent the telescope, but made a decisive improvement shortly after it was invented in Holland. His telescope had a larger, outwardly curved converging lens as an objective (towards the observed object) and a smaller, inwardly curved diverging lens as an eyepiece (towards the eye). Opera glasses are still made according to this principle today.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eCurious Minds did you know: \u003c\/b\u003e\u003ci\u003eGalileo was sent to roman prison for his work with a telescope, as his results were said to support Copernicus' theory of heliocentrism which was claimed heretic by the Roman catholic church.\u003c\/i\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eThis kit is not pre-punched\u003c\/b\u003e, the parts need cutting out with scissors or a craft-knife.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eThe kit includes the \u003ci\u003eOptiMedia\u003c\/i\u003e lenses 1 and 9.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eMagnification:\u003c\/b\u003e 10x\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eConstruction time:\u003c\/b\u003e 35 min\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eSize:\u003c\/b\u003e 5 x 5 x 30 (-45) cm\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eSuitable for children aged 8 and up, with adult assistance.\u003c\/p\u003e","brand":"Astromedia","offers":[{"title":"Default Title","offer_id":32914798510124,"sku":"002582","price":4.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0326\/3840\/2604\/files\/002582-Astromedia-Galileo-Telescope-2.jpg?v=1727534997"},{"product_id":"astromedia-build-a-working-steam-gyro-science-model-kit-for-age-8-up","title":"Astromedia Build a Working Steam Gyro Science Model Kit for Age 8 \u0026 Up","description":"\u003ch2 class=\"MsoNormal\"\u003eThe very first steam engine was a spinning copper ball, invented by Hero of Alexandria in the first century.\u003c\/h2\u003e\n\u003cp class=\"MsoNormal\"\u003eThis floating spin top uses the same principle. A tea light \u003cstrong\u003e(not included)\u003c\/strong\u003e heats the water in the copper spiral and recoil from the steam makes the Gyro spin. Then the steam condenses and sucks fresh water into the pipe. This process is repeated several times per second as long as the candle burns.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eA neat little model that fascinates young and old. Add a paper cylinder and turn it into a spinning buoy, a revolving lantern, etc.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eIt is a beautifully simple demonstration of a steam gyro.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eCurious Minds Did You Know:\u003c\/b\u003e \u003ci\u003eThe word gyroscope comes from the greek Gyros \"a circle\" and skopos \"watcher\" as the gyroscope shows that the earth rotates.\u003c\/i\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eThe kit contains a cork plate (80 x 10 mm) with pre-drilled holes, a copper spiral with soft-annealed ends, and a bending tool.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eConstruction time:\u003c\/b\u003e 15 min.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eSuitable for children aged 8 and up, with adult assistance.\u003cspan style=\"font-size: 0.875rem;\"\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Astromedia","offers":[{"title":"Default Title","offer_id":32914830131244,"sku":"002984","price":6.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0326\/3840\/2604\/files\/002984-Astromedia-Steam-Gyro-2.jpg?v=1727537929"},{"product_id":"astromedia-build-a-working-solar-projector-science-kit-for-age-12-up","title":"Astromedia Build a Working Solar Projector Science Kit for Age 12 \u0026 Up","description":"\u003ch2 class=\"MsoNormal\"\u003eSafely observe the Sun!\u003c\/h2\u003e\n\u003cp class=\"MsoNormal\"\u003eThis amazing Solar Projector Construction Kit provides a fascinating practical project to build your own solar projector instrument and once built, it is an easy and secure way to introduce children to the Sun without risk as it projects the Sun onto a view screen.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eThis practical instrument projects the Sun onto a view screen. The diameter of the projection is adjustable to 55 or 75mm.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eThe optics consists of an achromatic glass lens, one plane and two convex mirrors. The projector can be adjusted from 0 to 90 degrees, two quadrants measure the Sun’s declination.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003ci\u003eCurious Minds Did You Know: \u003c\/i\u003e\u003c\/b\u003e\u003ci\u003eProjectors often use dichroic prisms as it splits the light in to red, green and blue components respectively. The Red, green and blue (RGB) colour system is very commonly used to display images.\u003c\/i\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eSize:\u003c\/b\u003e 20 x 20 x 25 cm\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eSuitable for ages 12 and up.\u003c\/p\u003e","brand":"Astromedia","offers":[{"title":"Default Title","offer_id":32914833408044,"sku":"002988","price":25.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0326\/3840\/2604\/files\/the-solar-projector.webp?v=1707337198"},{"product_id":"astromedia-build-a-working-ring-sundial-construction-kit-for-ages-10","title":"Astromedia Build a Working Ring Sundial Construction Kit for Ages 10+","description":"\u003ch2 class=\"MsoNormal\"\u003eThis Queen of sundials can be adjusted to any location in the world to show the true local time.\u003c\/h2\u003e\n\u003cp class=\"MsoNormal\"\u003eThe universal sundial ring is the queen of all sundials. It is closely related to the armillary sphere, because similar to this, it depicts the surrounding firmament with its rings: The revolving suspension shows the position of the zenith (the highest point of the firmament) and the lowest point lying opposite, which is on the hidden half of the celestial sphere, which is called the nadir.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eSundial rings, which first showed up at the end of the 14th century, first appeared in their present form in England around 1620 and were in use until the 18th century. Some of them can still be found in museums where they count among the most valuable treasures. \u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eOnce you have enjoyed building your own fully functioning sundial ring with this clever kit, you can measure Real Solar Time (also called Real Local Time, the time determined by the course of the sun), exactly as sailors, travellers and astronomers did in the past. The reading is precise down to a few minutes and very easy to do, as is explained after the building instructions.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eAn extremely robust and beautiful precision instrument.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003ci\u003eWhy Curious Minds Recommends\u003c\/i\u003e\u003c\/b\u003e: We recommend the Universal Sundial Ring Kit due to the accuracy of the kit construction and the pleasurable experience of building an extremely robust and beautiful precision instrument. Once built, the model actually functions meaning your astronomy experience will continue long after the building of the model is completed.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003ci\u003eCurious Minds Did You Know:\u003c\/i\u003e\u003c\/b\u003e\u003ci\u003e The sun dial is the oldest known instrument for telling the time!\u003c\/i\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eSize\u003c\/b\u003e: 1 x 14.4 c 17.5 cm\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eSuitable for ages 10 and up, with adult assistance.\u003c\/p\u003e","brand":"Astromedia","offers":[{"title":"Default Title","offer_id":32914860736556,"sku":"003019","price":15.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0326\/3840\/2604\/files\/the-ring-sundial_2.webp?v=1720283207"},{"product_id":"astromedia-build-a-working-newton-reflecting-telescope-kit-for-age-14","title":"Astromedia Build a Working Newton Reflecting Telescope Kit for Age 14+","description":"\u003ch2 class=\"MsoNormal\"\u003eA Cardboard Kit for a Fully Functional Newtonian Reflecting Telescope!\u003c\/h2\u003e\n\u003cp class=\"MsoNormal\"\u003eThe telescope is equipped with a Dobsonian mounting that makes pointing at celestial objects easy. The Newton telescope consists of a primary concave mirror and a secondary flat mirror which is at an angle to reflect the light in to the eyepiece. Reflecting mirrors tend to be better than refracting mirrors as they avoid chromatic aberration and thus the majority of the worlds telescopes use mirrors! The main BAADER glass mirror with SiO\u003csub\u003e2\u003c\/sub\u003e coating has a diameter of 70 mm and a focal length of 450 mm. Two eyepieces provide magnification factors of 16x and 30x, powerful enough for the observation of Moon Craters and even the Moons of Jupiter.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eThe telescope can be equipped with a dedicated solar filter to upgrade it for observations of the Sun.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eIn 1668 Isaac Newton (1643 - 1727) solved several problems of refracting telescopes when he invented the reflecting telescope. His great idea was to replace the convex objective lens with a hollow mirror. Light hitting the mirror is gathered, reflected onto a small angled flat mirror, and then directed sideways into the eyepiece. Newtons first mirrors, ground and polished by himself, had diameters of 25 and 50mm and a focal length of 300mm. With this, he achieved a magnification of about 30x.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eThe power of the AstroMedia Reflecting Telescope is very similar to Newton's first instruments. The heart of the telescope is the main mirror, a spherical precision mirror made from ground and polished glass. It has a diameter of 70mm and a focal length of 450mm, and was specially calculated and produced for this kit. The eyepieces are fitted with acrylic glass lenses. With the help of Wolfgang Busch, Ahrensburg, Astromedia found lens arrangements that avoid colour aberrations and distortions as much as possible. The eyepieces achieve magnifications of 16x an 30x, which is sufficient to observe the craters on the Moon and, after proper adjustment of the main mirror, even the moons of Jupiter.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eOf course a cardboard telescope can't be compared to much more expensive industrially manufactured instruments. Nevertheless, this kit gives you the opportunity to follow Newton in putting together your own telescope and in the end you will be as surprised by the result as Newton was when he built his.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eCurious Minds Did You Know: \u003c\/b\u003e\u003ci\u003eThe Newtonian telescope is the first known functional telescope which uses a mirror. It was built in 1668 with the purpose of proving Newton's theory that white light is composed of a spectrum of colours, which was later proved to be correct!\u003c\/i\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eMain mirror:\u003c\/b\u003e spherical, 70mm diameter, 450mm focal length, SiO\u003csub\u003e2\u003c\/sub\u003e coating, made by BAADER\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eEyepieces:\u003c\/b\u003e Ramsden 15mm, Steinheil 28mm\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eSize:\u003c\/b\u003e 45 x 16 x 28 cm\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eSuitable for ages 14 and up.\u003c\/p\u003e","brand":"Astromedia","offers":[{"title":"Default Title","offer_id":32914865160236,"sku":"003771","price":27.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0326\/3840\/2604\/files\/the-newton-reflector-telescope_2.webp?v=1707334806"},{"product_id":"astromedia-build-your-own-working-sextant-construction-kit-for-age-12","title":"Astromedia Build Your Own Working Sextant Construction Kit for Age 12+","description":"\u003ch2 class=\"MsoNormal\"\u003eThe Sextant kit from Astromedia is a wonderful example of an instrument used to measure angles by sailors and explorers.\u003c\/h2\u003e\n\u003cp class=\"MsoNormal\"\u003eThe classical instrument for measuring angles as used by sailors and discoverers. A sturdy kit with two unbreakable stainless steel mirrors and a sun filter. This sextant is not a toy but a fully functional instrument with an accuracy of 5-10 arc minutes!\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eIdeal for everybody who wants to explore the fascinating world of astronomical navigation.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003ePre-punched cardboard kit with four printed A4 sheets, including two stainless steel mirrors, a solar filter, and detailed instructions.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eCurious Minds Did You Know : \u003c\/b\u003e\u003ci\u003eThe Sextant gets it's name from the fact it's arc angle is 60 degrees which is a sixth of a total circle.\u003c\/i\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eDimensions:\u003c\/b\u003e 20cm wide and 23cm high\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eSuitable for ages 12 and up.\u003c\/p\u003e","brand":"Astromedia","offers":[{"title":"Default Title","offer_id":32914866831404,"sku":"003773","price":21.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0326\/3840\/2604\/files\/003773-Astromedia-The-Sextant-1.jpg?v=1727537423"},{"product_id":"astromedia-build-a-working-magic-lantern-construction-kit-for-ages-12","title":"Astromedia Build a Working Magic Lantern Construction Kit for Ages 12+","description":"\u003ch2 class=\"MsoNormal\"\u003eAncient Cinema for your Home!\u003c\/h2\u003e\n\u003cp class=\"MsoNormal\"\u003eThe Magic Lantern is a truly fantastic kit from Astromedia. Used from the 17th Century to create illusions and dazzle spectators, these lanterns are much like modern day projectors. With this kit you can create a fully functioning, beautiful cardboard replica of a Magic Lantern which was originally made of sheet metal, and be able to project photographed slides, self-drawn or printed images using the battery-operated light source.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eFrom the 17th century on magic lanterns made a huge impression on fair ground spectators.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eThe magic lantern is the mother of all those visual devices and media that have become an essential part of our modern world. Leonardo da Vinci is said to have experimented with projected images, but its real inventor is the Dutch physicist Christian Huygens. In 1659, he constructed an instrument for projecting images painted on glass plates with the help of an oil lamp.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eFrom the 17th century until the dawn of the age of cinema, the magic lantern made a tremendously strong impression on viewers in fairground booths, salons, or children's rooms. Until the triumph of slide and film projectors in the last century, the \"magic lantern\" was the only way to project still or moving images. Nothing has changed in its design principle since then.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eThis is a kit for an elegant and fully functional cardboard replica in original size. It comes complete with electric lighting, three lens optics (3x \u003ci\u003eOptiMedia\u003c\/i\u003e lens 7), and one classical picture strip. One empty strip to make your own slide for projection is included. Also suitable for 36mm film strips.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003ci\u003eCurious Minds Did You Know: \u003c\/i\u003e\u003c\/b\u003e\u003ci\u003eThe first image concerning the magic lantern was dated to 1659, it was sketches of a skeleton, above this the creator of the magic lantern, Christiaan Huygens wrote \"for representations by means of convex glasses with the lamp.\"\u003c\/i\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e Features:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul style=\"margin-top: 0cm;\" type=\"disc\"\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo1; tab-stops: list 36.0pt;\"\u003e6x A4 pre-punched, printed construction cardboard sheets\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo1; tab-stops: list 36.0pt;\"\u003eDetailed instructions for an easy assembly\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo1; tab-stops: list 36.0pt;\"\u003eAccessories included: electric lighting, acrylic lenses, one pre-made picture strip \"The Clever Rat\", one clear strip for your own illustrations\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo1; tab-stops: list 36.0pt;\"\u003eAlso suitable for 36mm film strips\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"MsoNormal\"\u003eDimensions of the finished lantern: 13 x 28 x 23cm\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eSuitable for ages 12 and up.\u003c\/p\u003e","brand":"Astromedia","offers":[{"title":"Default Title","offer_id":32914867650604,"sku":"003774","price":24.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0326\/3840\/2604\/products\/product-namecuriousmindscouk-822830.jpg?v=1707334546"},{"product_id":"build-a-functioning-stirling-engine-construction-kit-for-ages-12-up","title":"Build a Functioning Stirling Engine Construction Kit for Ages 12 \u0026 Up","description":"\u003ch2 class=\"MsoNormal\"\u003eFind out how a Stirling Engine works! The Stirling Engine kit is a great gift for engineers!\u003c\/h2\u003e\n\u003cp class=\"MsoNormal\"\u003eWith this beautiful Stirling engine construction kit from Astromedia, you can build your very own cardboard Stirling Engine model - Just place the engine on a cup with hot water (tea\/coffee) and it will run quietly for up to an hour! This kit is perfect for people who are interested in engineering and want to learn how engines work! \u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eThe Astromedia Stirling engine can also be used to power the \u003ca href=\"https:\/\/curiousminds.co.uk\/products\/astromedia-the-ferris-wheel-construction-kit?_pos=1\u0026amp;_psq=ferris\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" title=\"Astromedia Ferris Wheel Construction Kit\" rel=\"noopener\"\u003eAstromedia Ferris Wheel\u003c\/a\u003e\u003ca href=\"https:\/\/curiousminds.co.uk\/products\/astromedia-the-ferris-wheel-construction-kit\" title=\"Astromedia Ferris Wheel Construction Kit\"\u003e\u003c\/a\u003e!\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eThe revolutionary concept of this engine was devised by the Scottish priest and engineer Robert Stirling. The enthusiastic fusspot lived during the most vibrant time of the industrial revolution, whose hunger for energy was fed by the steam engines invented by James Watt in 1776.  His compassion for victims of boiler explosions led him to envision an engine that would work without the high pressure of ordinary steam engines.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eIt works by externally heating the engine externally causing the gases inside to heat and expand. This gas then moves to a different part of the engine and a piston takes heat energy from the gas which can then be converted to mechanical power.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eHow it works:\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eA sealed cylinder is heated at one end and cooled at the other. A piston moves the enclosed air back and forth between the ends. Each time the air expands and contracts, the resulting pressure change is transmitted to a working piston that turns a crank shaft. The engine can use any any energy source that produces a temperature difference between the two ends of the cylinder: open fire, solar energy,  otherwise unused heat or cold, etc. \u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eTip:\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eInstead of putting the engine on top of a cup of tea, place it on a frozen cold pack and start the flywheel the other way round.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eCurious Minds Did You Know:\u003c\/b\u003e\u003ci\u003e The Stirling engine was initially intended to rival the steam engine but was instead primarily used for low power domestic uses!\u003c\/i\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eThe kit comes complete with all necessary parts\u003cb\u003e \u003c\/b\u003esuch as laser-cut aluminium plates, low-friction PVC bearings, steel crank, and vinyl seal. The instruction booklet also contains information about the historical background and tuning tips for longer running time.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eConstruction time:\u003c\/b\u003e 20-30 hours\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eSize:\u003c\/b\u003e 12.6 x 12.6 x 16.5 cm\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eSuitable for ages 12 and up.\u003c\/p\u003e","brand":"Astromedia","offers":[{"title":"Default Title","offer_id":32914867912748,"sku":"003776","price":24.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0326\/3840\/2604\/files\/the-stirling-engine_3.webp?v=1708433185"},{"product_id":"astromedia-build-a-ferris-wheel-model-construction-kit-for-age-10-up","title":"Astromedia Build a Ferris Wheel Model Construction Kit for Age 10 \u0026 Up","description":"\u003ch2 class=\"MsoNormal\"\u003eAstromedia Ferris Wheel - the perfect gift for engineers!\u003c\/h2\u003e\n\u003cp class=\"MsoNormal\"\u003eThis amazing Ferris wheel construction kit from Astromedia allows you to build a beautiful - and fully functional - Ferris wheel that makes for a lovely display. Construction of the model is a fun and educational process, which is great for teaching young ones about engineering!\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eThe Ferris wheel can be powered by the \u003ca href=\"https:\/\/curiousminds.co.uk\/products\/build-your-own-functioning-steam-engine-model-construction-kit?_pos=1\u0026amp;_psq=steam\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" title=\"Astromedia Steam Engine Construction Kit\" rel=\"noopener\"\u003eAstromedia Steam Engine\u003c\/a\u003e, or the \u003ca href=\"https:\/\/curiousminds.co.uk\/products\/build-a-functioning-stirling-engine-construction-kit-for-ages-12-up?_pos=1\u0026amp;_psq=stirl\u0026amp;_ss=e\u0026amp;_v=1.0\" target=\"_blank\" title=\"Astromedia Stirling Engine Construction Kit\" rel=\"noopener\"\u003eAstromedia Stirling Engine\u003c\/a\u003e!\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eIt stands in the tradition of tin models meant to be driven by toy steam engines produced for the children of wealthy families at the end of the 19th century. To make sure it can be driven by the moderate power of the Astromedia Steam Engine, the construction minimises friction as much as possible and includes a gear reduction of 15:1.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eThat means that the diameter of the driving wheel fitted to the ferris wheel is 15 times as large as the diameter of the one fitted to the crank shaft of the Steam Engine or Stirling Engine.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eCurious Minds Fun Fact: \u003c\/b\u003e\u003ci\u003eThe first sketch of a Ferris wheel was drawn on a cocktail napkin at an engineer's banquet in 1891 by George W. Ferris the future inventor of the Ferris wheel!\u003c\/i\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003ePre-punched kit with gold printing.\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eConstruction time:\u003c\/b\u003e 5-6 hours\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eIncludes:\u003c\/b\u003e PVC bearings, wooden axles, and other parts needed for construction\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eDiameter:\u003c\/b\u003e 20cm\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eSuitable for ages 10 and up, with adult assistance.\u003c\/p\u003e","brand":"Astromedia","offers":[{"title":"Default Title","offer_id":32914869256236,"sku":"003779","price":12.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0326\/3840\/2604\/files\/das-riesenrad.webp?v=1707428249"},{"product_id":"astromedia-build-a-wimshurst-machine-stem-construction-kit-for-age-16","title":"Astromedia Build a Wimshurst Machine STEM Construction Kit for Age 16+","description":"\u003ch2 class=\"MsoNormal\"\u003eThe Wimshurst Machine is one of the most iconic electrostatic machines.\u003c\/h2\u003e\n\u003cp class=\"MsoNormal\"\u003eLike a Van de Graaff generator, the Wimshurst Machine utilises a build-up of static charge to then produce a spark of electricity.\u003cbr\u003e\u003cbr\u003eThis kit allows you to build your own fully functional high voltage Wimshurst Machine out of sturdy cardboard, aluminium foil, PVC and wooden rods. The kit features a limited current for safe experiments, with the sparks produced being up to 70,000V and 5cm long.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eThe classic high voltage generator - with limited current for safe experiments! For many people this machine is the most vivid memory of their physics classes at school. Everybody is fascinated by the crackling flashes of lightning that appear between the electrodes when the crank on the back is turned.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eTwo counter-rotating acrylic discs with aluminium segments produce static electricity of up to 70,000 volts that is stored in two Leyden jars made from PVC and aluminium foil. The Leyden jars are discharged via two spherical electrodes, producing bright sparks. The capacity of the Leyden jars is limited by design, so that the produced electricity is completely harmless (rather like the light electric shock one receives sometimes when touching a door knob).\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eHistory of the Wimshusrt Machine:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eThis electrostatic induction machine was invented in 1880 by James Wimshurst (1832 - 1903). Wimshurst was an English naval engineer and inventor, who developed a special interest in electricity and how to produce it. His machines were the first to make possible continuous currents at very high voltages. These were necessary for the first x-ray machines, for example.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eOther electrostatic generators had been used since the early 1700s to amuse members of high society, for example with the \"electric kiss\": the gentleman who dared to kiss a charged lady was payed back with an electric shock.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eCurious Minds Did You Know: \u003c\/b\u003e\u003ci\u003eThe high voltages produced by The Wimhurst Machine made X-ray experiments much easier in it's time as it was extremely difficult to reach these voltages beforehand.\u003c\/i\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eSafety First:\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eThe Astromedia Wimshurst Machine can produce voltages of up to 70,000V and sparks of 5 cm length. Nevertheless, it is completely safe to touch the machine. The capacity of the two Leiden flasks is small enough so that the energy of the discharges is well below the legal limit.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eNever use the machine in the vicinity of flammable fluids or gases. The sparks could cause an explosion. Children should not operate the machine without adult supervision. Although the sparks can not cause any physical harm, they might nevertheless frighten a child unexpectedly.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eSuitable for ages 16 and up.\u003c\/p\u003e","brand":"Astromedia","offers":[{"title":"Default Title","offer_id":32914869649452,"sku":"003780","price":48.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0326\/3840\/2604\/files\/the-wimshurst-machine.webp?v=1707337425"},{"product_id":"astromedia-baader-astrosolar-small-solar-filter-film-for-ages-8-and-up","title":"Astromedia BAADER AstroSolar Small Solar Filter Film for Ages 8 and Up","description":"\u003ch2 class=\"MsoNormal\"\u003eOriginal BAADER AstroSolar Filter!\u003c\/h2\u003e\n\u003cp class=\"MsoNormal\"\u003eWith the help of this special CE certified film with a filter factor of 100,000 you can safely observe the Sun with your binoculars or telescope.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eJust fit the foil over the aperture or objective lens (NOT over the eyepiece!).\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eThis solar filter film provides an effective, yet lightweight, defense against the sun's rays, making it perfect for both residential and commercial applications\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eSize:\u003c\/b\u003e 75 x 75 mm\u003cbr\u003e\u003cbr\u003eSuitable for ages 8 and up with adult supervision.\u003c\/p\u003e","brand":"Astromedia","offers":[{"title":"Default Title","offer_id":32914885279788,"sku":"007543","price":5.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0326\/3840\/2604\/files\/ASK_03_WEB.jpg?v=1782481205"},{"product_id":"astromedia-build-a-desktop-planetarium-construction-kit-for-ages-14","title":"Astromedia Build a Desktop Planetarium Construction Kit for Ages 14+","description":"\u003ch2 class=\"MsoNormal\"\u003eKit for building a classical armillary sphere, the standard instrument for observer-centred astronomy for over 2000 years.\u003c\/h2\u003e\n\u003cp class=\"MsoNormal\"\u003eWith this beautiful Desktop Planetarium you can easily visualise the movement of Sun, Moon, planets, and fixed stars above and below the horizon for any location on Earth and any day of the year. A real gem, not only as an astronomical instrument and teaching tool, but also as a fantastic showpiece.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eThe meridian can be adjusted for all latitudes between the north and south pole. The ecliptic shows the position of the Sun for each day of the year with date, angle, and the signs of the zodiac. The hour ring shows true local time, and lengths of day, night, and twilight. Along the adjustable lunar orbit you can see the moving nodes and the zones where solar and lunar eclipses can occur. The planets can be moved into any position on the ecliptic.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eCurious Minds did you know:\u003ci\u003e \u003c\/i\u003e\u003c\/b\u003e\u003ci\u003ePlanetariums come in many different sizes such as this construction kit. Other Planetariums can be huge like the Hayden Planetarium in New York City which is 21 metres long and can hold 423 people!\u003c\/i\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul style=\"margin-top: 0cm;\" type=\"disc\"\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo1; tab-stops: list 36.0pt;\"\u003eMeridian adjustable to all latitudes, including north and south pole\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo1; tab-stops: list 36.0pt;\"\u003eEcliptic with dates, degree scale, and stellar constellations\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo1; tab-stops: list 36.0pt;\"\u003eEquinoctial with apparent local time, twilight zones, and lengths of day and night\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo1; tab-stops: list 36.0pt;\"\u003eLunar orbit with moveable nodes and eclipse indicators\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo1; tab-stops: list 36.0pt;\"\u003eFoam rubber planets that can be positioned freely on the ecliptic\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo1; tab-stops: list 36.0pt;\"\u003eConstructed from four layers of cardboard, nearly as strong as laminated wood\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli class=\"MsoNormal\" style=\"mso-list: l0 level1 lfo1; tab-stops: list 36.0pt;\"\u003ePre-punched kit with gold, black, red, blue, and white printing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eConstruction time:\u003c\/b\u003e 8-12 hours\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eIncludes:\u003c\/b\u003e planet spheres, axles, and PVC bearings\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eHeight:\u003c\/b\u003e 35cm, \u003cb\u003eDiameter:\u003c\/b\u003e 33cm\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eSuitable for ages 14 and up.\u003c\/p\u003e","brand":"Astromedia","offers":[{"title":"Default Title","offer_id":32914885902380,"sku":"007545","price":32.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0326\/3840\/2604\/files\/the-desktop-planetarium.webp?v=1707336746"},{"product_id":"astromedia-a4-fresnel-lens-in-black-frame-with-handle-for-age-8-and-up","title":"Astromedia A4 Fresnel Lens in Black Frame with Handle for Age 8 and Up","description":"\u003ch2 class=\"MsoNormal\"\u003eThe same lens as our \u003ca href=\"https:\/\/curiousminds.co.uk\/products\/a4-fresnel-lens?_pos=1\u0026amp;_sid=481bf11da\u0026amp;_ss=r\" target=\"_blank\" title=\"A4 Fresnel Lens\" rel=\"noopener\"\u003eA4 Fresnel Lens\u003c\/a\u003e, but framed in black plastic with a handle on one side for use as a large magnifying glass. \u003c\/h2\u003e\n\u003cp class=\"MsoNormal\"\u003eA Fresnel Lens is a type compact lens originally developed for use in lighthouses. Astromedia Lenses are spherical, designed to offer a magnification of 3x, with ring shaped segments that focuses light towards the centre of the lens.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eTowards the edges, there will be a distortion of the image caused by diffraction around the perimeter. All our lenses will produce a sharp image in the centre, albeit not as clear as their spherical glass counterparts.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eCaution\u003c\/b\u003e: Can also be used as a burning-glass!\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eOverall size: \u003c\/strong\u003e300 x 190 mm\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eLens size: \u003c\/strong\u003e221 x 158 mm\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eFocal length: \u003c\/strong\u003e+300 mm\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eSuitable for ages 8 and up, with adult supervision.\u003c\/p\u003e","brand":"Astromedia","offers":[{"title":"Default Title","offer_id":32914950586412,"sku":"008510","price":5.75,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0326\/3840\/2604\/files\/framed-fresnel-lens-with-handle_1.jpg?v=1751811498"},{"product_id":"astromedia-build-a-nitinol-engine-stem-construction-kit-for-ages-14","title":"Astromedia Build a Nitinol Engine STEM Construction Kit for Ages 14+","description":"\u003ch2 class=\"MsoNormal\"\u003eBuild yourself a VERY unusual heat engine!\u003c\/h2\u003e\n\u003cp class=\"MsoNormal\"\u003eThe heart of this unusual thermal engine is a thin ring of Nitinol wire (0.3mm). Some warm water is enough to make the Nitinol Engine run. Nitinol is an alloy of nickel and titanium which has exceptional properties: at low temperatures it is soft and bendy, but as soon as it is heated above a certain transition temperature, it instantly becomes hard and flexible like spring steel. As soon as the temperature drops again, it returns to its bendy state. Nitinol is also a so-called memory metal: above the transition temperature it instantly assumes any shape that has been impressed during manufacture.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eThe transition temperature of this particular \u003cspan style=\"mso-spacerun: yes;\"\u003e \u003c\/span\u003ewire ring is 45ºC above which it becomes stiff and straight. Nevertheless the part of the wire that is immersed in the warm water lies around the drive wheel. When it straightens out, it is forced to move off the wheel and out of the water where it becomes bendy again. At the same time it pulls a new piece of wire into the water and the process starts again, leading to a constant rotation of the drive wheel.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eThe principle of this engine was developed by Frederic Wang in 1985. It works with only a small temperature difference and shows great potential for future applications.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eThis Astromedia kit is the first mass-produced engine of its type, worldwide. Anybody interested in engineering and physics will be fascinated by this kit. A fantastic model and a great present!\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eCurious Minds Did You Know: \u003c\/b\u003e\u003ci\u003eNitinol is an alloy of titanium and Nickel and is super elastic, it also has shape memory properties which means it can return to its original shape when heated.\u003c\/i\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003ePre-punched cardboard kit, includes Nitinol wire ring, aluminium shafts, PVC bearings, wooden axles, plastic drive wheel and running wheel, etc.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eConstruction time:\u003c\/b\u003e About 7 hours\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eSize:\u003c\/b\u003e 14 x 16.6 x 21.3 cm\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eSuitable for ages 14 and up.\u003c\/p\u003e","brand":"Astromedia","offers":[{"title":"Default Title","offer_id":32915024150572,"sku":"009802","price":33.75,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0326\/3840\/2604\/files\/the-nitinol-engine.webp?v=1707335550"},{"product_id":"astromedia-20cm-newtons-window-prism-with-hanging-loop-for-ages-10","title":"Astromedia 20cm Newton's Window Prism with Hanging Loop for Ages 10+","description":"\u003ch2 class=\"MsoNormal\"\u003eThis large crown glass prism projects beautiful spectral colours into your room.\u003c\/h2\u003e\n\u003cp class=\"MsoNormal\"\u003eHang the prism in a south-west or south-east facing window. When the low standing sun shines through the prism, it projects fields of spectral colours sideways into the room. A slight spin of the prism makes them dance around beautifully.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eThe English mathematician, physicist, and philosopher Sir Isaac Newton (1643-1727) was one of the founding fathers of the modern theory of colours. Prisms like this one, were commonly known as a toy in Newton’s time, but he was the first one to use them for scientific experiments, leading to his famous Theory of Colours.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eThe Newton Window Prism is a whopping 20 cm (8 inches) long and is made of optical quality glass. The prism is presented in a smart blue velveteen drawstring bag complete with suggestions for experiments. It makes an ideal gift for science enthusiasts and geeks alike.\u003cbr\u003e\u003cbr\u003eIncludes velvet bag, strong hanger, and a description of Newton’s famous prism experiments.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eDimensions:\u003c\/b\u003e 30 x 30 x 30 x 200 mm\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eSuitable for ages 10 and up.\u003c\/p\u003e","brand":"Astromedia","offers":[{"title":"Default Title","offer_id":32915035652140,"sku":"C009888","price":19.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0326\/3840\/2604\/products\/product-namecuriousmindscouk-190084.jpg?v=1654863623"},{"product_id":"astromedia-build-a-working-stardial-stem-construction-kit-for-ages-10","title":"Astromedia Build a Working Stardial STEM Construction Kit for Ages 10+","description":"\u003ch2 class=\"MsoNormal\"\u003eHow did our ancestors tell the time at night?\u003c\/h2\u003e\n\u003cp class=\"MsoNormal\"\u003eThis reconstruction of a 500 year old stardial shows the time with the help of the North Star and the Big Dipper. You can even read it in the dark, using only your finger tips!\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eOn the back of the dial you will find a mariner’s astrolabe for measuring the height of the Sun, stars, and landmarks.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cstrong\u003eWhy Curious Minds Recommends: \u003c\/strong\u003e\u003cem\u003eWe recommend the Star Dial Construction Model Kit due to the accuracy of the kit construction and the pleasurable experience of building an extremely robust and beautiful precision instrument. Once built, the model actually functions meaning your astronomy experience will continue long after the building of the model is completed.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eSize\u003c\/b\u003e: 3 x 16 x 29 cm\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eSuitable for ages 10 and up, with adult assistance.\u003c\/p\u003e","brand":"Astromedia","offers":[{"title":"Default Title","offer_id":32915035881516,"sku":"C009889","price":13.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0326\/3840\/2604\/files\/the-stardial.webp?v=1707337306"},{"product_id":"astromedia-build-a-working-model-of-a-kepler-telescope-for-ages-8-up","title":"Astromedia Build a Working Model of a Kepler Telescope for Ages 8 \u0026 Up","description":"\u003ch2 class=\"MsoNormal\"\u003eThis is a kit for an astronomical telescope as described by Johannes Kepler.\u003c\/h2\u003e\n\u003cp class=\"MsoNormal\"\u003eThe surprisingly sharp and bright image is upside-down as usual with astronomical telescopes. The factor of magnification is 10, ideal for moon craters and even the moons of Jupiter.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eThe lenses of a Kepler telescope are both convex, producing an upside-down image, which is no problem for astronomical observations. At the same time the field of view is MUCH larger than the one of a Galilean telescope, which uses a convex objective lens and a concave eyepiece lens. This has the advantage of producing an upright image, but it also limits the field of view significantly.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eTogether with the \u003ca href=\"https:\/\/curiousminds.co.uk\/products\/astromedia-build-a-working-galileo-telescope-stem-model-kit-for-age-8?_pos=6\u0026amp;_sid=b4b1e2130\u0026amp;_ss=r\" target=\"_blank\" title=\"Build a Galileo Telescope Kit\" rel=\"noopener\"\u003eGalileo Telescope\u003c\/a\u003e, this kit allows a direct comparison of the two different principles of telescopes. The advantage of the Kepler Telescope is instantly visible.\u003cbr\u003e\u003cbr\u003eJohannes Kepler developed and improved the Galilean telescope. Instead of just one converging lens, he took two and thus enabled much higher magnifications. The upside-down image does not interfere with astronomical observations, which is why almost all lens telescopes are still built according to this construction principle today. Thanks to the additional field lens, it has an astonishingly large, bright image at ten times magnification.\u003cbr\u003e\u003cbr\u003eThe performance of the telescope can be further improved by reducing the opening of the objective lens with a round diaphragm. The image will then be less bright, but sharper. Using our inexpensive tripod adapter (see below), the telescope can be mounted on any standard photo or video tripod. This stops the small vibrations from being handheld and the telescope gives a clearer picture.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eThe Kepler telescope is easy to build and is ideal teaching material at Secondary School level. It is also ideal for Scout Groups and project work on the subject of astronomy and physics.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003e\u003ci\u003eCurious Minds Did You Know:\u003c\/i\u003e\u003c\/b\u003e\u003ci\u003e The largest star that humans are aware of is called the Pistol Star and it lies in the center of the Pistol Nebula. It has one hundred times the mass of the sun! To put that in perspective, the Pistol Star is approximately 9159410 times heavier than planet earth! Makes you feel very small...\u003c\/i\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eThis kit is not pre-punched\u003c\/b\u003e, the parts need cutting out with scissors or a craft-knife\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eThe kit includes the \u003ci\u003eOptiMedia\u003c\/i\u003e lenses 3, 7, and 9\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eMagnification:\u003c\/b\u003e 10x\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eConstruction time:\u003c\/b\u003e 35 min\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eSize:\u003c\/b\u003e 5 x 5 x 30 (-45) cm\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eSuitable for children aged 8 and up, with adult assistance.\u003c\/p\u003e","brand":"Astromedia","offers":[{"title":"Default Title","offer_id":32915044991020,"sku":"C010419","price":6.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0326\/3840\/2604\/files\/the-kepler-telescope.webp?v=1707336889"},{"product_id":"astromedia-a4-large-fresnel-lens-with-3x-magnification-for-ages-8-up","title":"Astromedia A4 Large Fresnel Lens with 3x Magnification for Ages 8 \u0026 Up","description":"\u003ch2 class=\"MsoNormal\"\u003eA Fresnel Lens is a type compact lens originally developed for use in lighthouses.\u003c\/h2\u003e\n\u003cp class=\"MsoNormal\"\u003eAstromedia Lenses are spherical, designed to offer a magnification of 3x, with ring shaped segments that focuses light towards the centre of the lens. Towards the edges, there will be a distortion of the image caused by diffraction around the perimeter.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eAll Astromedia lenses will produce a sharp image in the centre, albeit not as clear as their spherical glass counterparts.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eThis XXL format (nearly A4), only 0.6 mm thick and 39 g in weight, magnifies a whole book page twice.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eCaution:\u003c\/b\u003e This lens is also a very strong burning-glass that ignites dry wood instantly!\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eGroove spacing: 0.3 mm\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eSize: 260 x 180 mm\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eFocal length: +300 mm\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eSuitable for ages 8 and up, with adult supervision.\u003c\/p\u003e","brand":"Astromedia","offers":[{"title":"Default Title","offer_id":32915072712748,"sku":"008509","price":3.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0326\/3840\/2604\/products\/product-namecuriousmindscouk-510366.jpg?v=1654862696"},{"product_id":"astromedia-the-reversing-goggles-scientific-instrument-kit-for-age-16","title":"Astromedia The Reversing Goggles Scientific Instrument Kit for Age 16+","description":"\u003ch2 class=\"MsoNormal\"\u003eTurn the World on its Head!\u003c\/h2\u003e\n\u003cp class=\"MsoNormal\"\u003eThese amazing Reversing Goggles allow you to view the world upside down! The plastic goggles holds a set of Dove prisms, which inverts the image through a process known as total internal reflection.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eBack in 1896 the American scientist George Stratton conducted an experiment to see what would happen if he viewed the world through an inverting prism. He found that after 4 days, his brain started to compensate, and he could see the world the right way up again.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eThe kit includes a lightweight, ventilated plastic housing, two prism holders made from MDF (medium density fibreboard), two high quality Dove prisms in lightweight plexiglass giving a 35x20mm view, plus a small file for smoothing edges.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eA small amount of assembly is required. You will need a protractor in order to measure a right angle and some 2 component glue that hardens quickly.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eSuitable for ages 16 and up.\u003c\/p\u003e","brand":"Astromedia","offers":[{"title":"Default Title","offer_id":32915241631788,"sku":"C012877","price":47.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0326\/3840\/2604\/products\/product-namecuriousmindscouk-781943.jpg?v=1644672577"},{"product_id":"astromedia-build-a-working-historical-camera-obscura-kit-for-ages-12","title":"Astromedia Build a Working Historical Camera Obscura Kit for Ages 12+","description":"\u003ch2 class=\"MsoNormal\"\u003eAll modern cameras have one common ancestor - The Camera Obscura!\u003cbr\u003e\n\u003c\/h2\u003e\n\u003cp class=\"MsoNormal\"\u003eThe light of the outside world falls through a pinhole onto the opposite wall of a room and produces an upside-down picture.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eIn the 16th century the camera obscura was greatly improved upon by the inclusion of an objective lens. This produced a much brighter picture and around 1750, many painters, like the Venetian Canaletto, used it to make sketches for their paintings. In 1836, the French inventor, Nicéphore Nièpce projected the picture on a light-sensitive plate and the photographic camera was born.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eAstromedia’s beautiful, sturdy Camera Obscura is equipped with a powerful lens (62mm diameter, 275mm focal length) and a mirror for an upright picture, like the one Canaletto used. The picture is projected onto a 16x16cm screen with transparent paper on which it can be viewed or copied by pencil.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003ePre-punched kit with black and gold printing, complete with lens, mirror, clear screen and transparent paper.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eConstruction time:\u003c\/b\u003e about 3 hours\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003e\u003cb\u003eSize:\u003c\/b\u003e 28 x 19 x 19 cm\u003c\/p\u003e\n\u003cp class=\"MsoNormal\"\u003eSuitable for ages 12 and up.\u003c\/p\u003e","brand":"Astromedia","offers":[{"title":"Default Title","offer_id":35741180559512,"sku":"C009891","price":25.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0326\/3840\/2604\/products\/cfd0e211-333a-45dd-a0bf-8401bf0b798c.jpg?v=1707335107"},{"product_id":"pathfinders-build-a-wooden-lift-bridge-stem-kit-for-ages-7-and-up","title":"Pathfinders Build A Wooden Lift Bridge STEM Kit for Ages 7 and Up","description":"\u003cdiv class=\"celwidget aplus-module premium-module-3-four-column-images aplus-premium\" data-csa-c-id=\"3qm9av-vws3h-m5zssc-ibb55w\" data-cel-widget=\"aplus-premium-module-3-four-column-images\"\u003e\n\u003cdiv class=\"a-section a-spacing-none premium-aplus premium-aplus-module-3 aplus-container-1\"\u003e\n\u003cdiv class=\"a-section a-spacing-none premium-aplus-four-column\"\u003e\n\u003cdiv class=\"a-section a-spacing-none premium-aplus-column\"\u003e\n\u003cdiv class=\"a-section a-spacing-none column-heading\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"a-section a-spacing-none column-description\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"a-section a-spacing-none premium-aplus-column\"\u003e\n\u003ch2 class=\"a-section a-spacing-none {'column-image'}\"\u003eOne of the most common types of bridges for freight trains.\u003c\/h2\u003e\n\u003cdiv class=\"a-section a-spacing-none {'column-image'}\"\u003eThe Truss Design Lift Bridge is a working replica of the many lift bridges that have been made over the last 100 years.\u003c\/div\u003e\n\u003cdiv class=\"a-section a-spacing-none {'column-image'}\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"a-section a-spacing-none {'column-image'}\"\u003eLift bridges became the workhorses of the freight railroads for many years as rail lines expanded over the rivers and ports of the world. The design was particularly useful in areas where there was no room for a bridge to swing, such as a busy industrial port.\u003c\/div\u003e\n\u003cdiv class=\"a-section a-spacing-none {'column-image'}\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"a-section a-spacing-none {'column-image'}\"\u003eThis bridge uses a small handle and crankshaft to lift the center span to the top of the truss structure, allowing trolls and other vehicles to safely pass between the two ends.\u003c\/div\u003e\n\u003cdiv class=\"a-section a-spacing-none {'column-image'}\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"a-section a-spacing-none {'column-image'}\"\u003eThe kit can be mostly made without glue and taken apart for storage. Snug slot construction and accurate cutting makes this possible!\u003c\/div\u003e\n\u003cdiv class=\"a-section a-spacing-none column-heading\"\u003e\n\u003cp class=\"aplus-h3 a-text-bold\"\u003e\u003cbr\u003eThe Lift Bridge is a type of moving bridge in which the span rises vertically while staying horizontal. Kit includes educational info and links\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"a-section a-spacing-none column-description\"\u003e\n\u003cp class=\"aplus-p3\"\u003eThis STEM building kit encourages problem-solving skills and hands-on exploration. A fun stem activity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"a-section a-spacing-none premium-aplus-column\"\u003e\n\u003cdiv class=\"a-section a-spacing-none column-description\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"a-section a-spacing-none premium-aplus-column\"\u003e\n\u003cdiv class=\"a-section a-spacing-none column-description\"\u003e\n\u003cp class=\"aplus-p3\"\u003eA fun and inspiring arts and crafts project for kids A 3D puzzle that provides a rewarding challenge\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"celwidget aplus-module premium-module-4-two-column-images aplus-premium\" data-csa-c-id=\"9hbbfm-v9e336-w8k1fy-dg4for\" data-cel-widget=\"aplus-premium-module-4-two-column-images\"\u003e\n\u003cdiv class=\"a-section a-spacing-none premium-aplus premium-aplus-module-4 aplus-container-1\"\u003e\n\u003cdiv class=\"a-section a-spacing-none premium-aplus-two-column\"\u003e\n\u003cdiv class=\"a-section a-spacing-none premium-aplus-column\"\u003e\n\u003cdiv class=\"a-section a-spacing-none column-heading\"\u003e\n\u003cdiv class=\"a-section a-spacing-none premium-aplus-column\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"a-section a-spacing-none column-description\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"a-section a-spacing-none premium-aplus-column\"\u003e\n\u003cdiv class=\"a-section a-spacing-none column-heading\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"a-section a-spacing-none column-description\"\u003e\n\u003cdiv class=\"a-section a-spacing-none column-heading\"\u003e\n\u003cdiv class=\"a-section a-spacing-none premium-aplus-column\"\u003e\n\u003cdiv class=\"a-section a-spacing-none column-description\"\u003e\n\u003cp class=\"aplus-p3\"\u003eMade from non toxic sustainable FSC wood. Pegged for extra strength.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"a-section a-spacing-none column-description\"\u003e\n\u003cp class=\"aplus-p3\"\u003e\u003cspan class=\"a-text-bold\"\u003e\u003cstrong\u003eBuild Time: \u003c\/strong\u003e60 mins +\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"aplus-p3\"\u003e\u003cspan class=\"a-text-bold\"\u003e\u003cstrong\u003eSkill level: \u003c\/strong\u003eMedium\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp class=\"aplus-p3\"\u003eAPPROX. 254 x 381 x 75 MM ASSEMBLED \u003c\/p\u003e\n\u003cp class=\"aplus-p3\"\u003eSuitable for children aged 7 and up.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Pathfinders","offers":[{"title":"Default Title","offer_id":38024561229976,"sku":"G011009","price":20.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0326\/3840\/2604\/products\/4c751877-59c9-4d81-96f6-07cd962acce1.jpg?v=1655731581"},{"product_id":"pathfinders-build-a-wooden-leonardo-da-vinci-trebuchet-kit-for-ages-8","title":"Pathfinders Build A Wooden Leonardo Da Vinci Trebuchet Kit for Ages 14+","description":"\u003cdiv data-cel-widget=\"aplus-premium-module-4-two-column-images\" data-csa-c-id=\"4vgvf5-9mm7ph-d4n6bs-5e0xj8\" class=\"celwidget aplus-module premium-module-4-two-column-images aplus-premium\"\u003e\n\u003cdiv class=\"a-section a-spacing-none premium-aplus premium-aplus-module-4 aplus-container-1\"\u003e\n\u003cdiv class=\"a-section a-spacing-none premium-aplus-two-column\"\u003e\n\u003cdiv class=\"a-section a-spacing-none premium-aplus-column\"\u003e\n\u003cdiv class=\"a-section a-spacing-none column-heading\"\u003e\n\u003ch1 class=\"aplus-h3 a-text-bold\"\u003eBuild a DIY trebuchet that is not only fun to build but also exciting to play with.\u003c\/h1\u003e\n\u003cp class=\"aplus-p3\"\u003eCombine medieval weapon toys with the hands-on challenge of a 3D puzzle. \u003c\/p\u003e\n\u003cp class=\"aplus-p3\"\u003eLeonardo’s take on the most powerful siege weapon of its time. Working scale model of a 15th century design for the Duke of Milan.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"a-section a-spacing-none column-description\"\u003e\n\u003cp class=\"aplus-p3\"\u003eA trebuchet is a type of catapult that relies on a counterweight to generate the force needed to launch an object from a sling attached to the end of a long arm. While every trebuchet is a catapult, not all catapults function as trebuchets.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"a-section a-spacing-none premium-aplus-column\"\u003e\n\u003cdiv class=\"a-section a-spacing-none column-description\"\u003e\n\u003cp class=\"aplus-p3\"\u003eBased on his drawing from the Codex Atlanticus, you can bring Leonardo’s trebuchet to life with this working model that can launch projectiles over 20 feet !\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv data-cel-widget=\"aplus-premium-module-4-two-column-images\" data-csa-c-id=\"9ogk71-nnpui-sb2tma-1klsfw\" class=\"celwidget aplus-module premium-module-4-two-column-images aplus-premium\"\u003e\n\u003cdiv class=\"a-section a-spacing-none premium-aplus premium-aplus-module-4 aplus-container-1\"\u003e\n\u003cdiv class=\"a-section a-spacing-none premium-aplus-two-column\"\u003e\n\u003cdiv class=\"a-section a-spacing-none premium-aplus-column\"\u003e\n\u003cdiv class=\"a-section a-spacing-none column-description\"\u003e\n\u003cp class=\"aplus-p3\"\u003eWhile Trebuchets were common siege engines in Medieval Times, Leonardo’s take on the most powerful weapon of the time was unique – his design used one main mast, different from all others before!\u003c\/p\u003e\n\u003cp class=\"aplus-p3\"\u003eBased on his drawing from the Codex Atlanticus, da Vinci’s Trebuchet was a design likely made for the Duke of Milan in about 1482, to impress the Duke of his skills as a military engineer. While it is not known if it was ever used in battle, you can bring Leonardo’s trebuchet to life with this working model!\u003c\/p\u003e\n\u003cp class=\"aplus-p3\"\u003eA great kit for beginner to intermediate model makers, this kit will throw a soft clay ball (included) well over 6 metres! Great for STEM programs and a rainy day – but it can be enjoyed on sunny or cloudy days!\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"aplus-p3\"\u003e\u003cspan class=\"a-text-bold\"\u003e\u003cstrong\u003eBuild Time: \u003c\/strong\u003e60+ mins\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"aplus-p3\"\u003e\u003cspan class=\"a-text-bold\"\u003e\u003cstrong\u003eSkill level:\u003c\/strong\u003e Medium\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"aplus-p3\"\u003e\u003cspan class=\"a-text-bold\"\u003eCreative Product Award 2014\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"aplus-p3\"\u003e\u003cspan class=\"a-text-bold\"\u003eAPPROX. 620 x 320 x 200 MM ASSEMBLED \u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"aplus-p3\"\u003e\u003cspan class=\"a-text-bold\"\u003eSuitable for ages 14+\u003c\/span\u003e\u003c\/p\u003e","brand":"Pathfinders","offers":[{"title":"Default Title","offer_id":38024561361048,"sku":"006994","price":35.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0326\/3840\/2604\/files\/1_c9ee32c2-933e-4a49-9f43-76c6e017768f.png?v=1731786529"},{"product_id":"pathfinders-build-a-wooden-leonardo-da-vinci-catapult-kit-for-ages-12","title":"Pathfinders Build A Wooden Leonardo Da Vinci Catapult Kit for Ages 12+","description":"\u003cdiv data-cel-widget=\"aplus-premium-module-4-two-column-images\" data-csa-c-id=\"672h4-lq2e41-es88vr-4mf296\" class=\"celwidget aplus-module premium-module-4-two-column-images aplus-premium\"\u003e\n\u003cdiv class=\"a-section a-spacing-none premium-aplus premium-aplus-module-4 aplus-container-1\"\u003e\n\u003cdiv class=\"a-section a-spacing-none premium-aplus-two-column\"\u003e\n\u003cdiv class=\"a-section a-spacing-none premium-aplus-column\"\u003e\n\u003cdiv class=\"a-section a-spacing-none column-heading\"\u003e\n\u003ch1 class=\"aplus-h3 a-text-bold\"\u003eThe Leonardo da Vinci catapult from PATHFINDERS is a DIY model kit that is fun to build and even more fun to play with.\u003c\/h1\u003e\n\u003cp\u003eThe Da Vinci kits combine medieval weapon toys with the joy of constructing a 3D puzzle. The ultimate blend of education and excitement for budding engineers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"a-section a-spacing-none column-description\"\u003e\n\u003cp class=\"aplus-p3\"\u003eA catapult also known as a traction trebuchet is mechanical device used in ancient and medieval warfare to hurl large projectiles, such as stones or arrows, over long distances. utilizing tension, torsion, or counterweights for propulsion.\u003c\/p\u003e\n\u003cp class=\"aplus-p3\"\u003eDuring the Roman Empire the Ancient Greek catapult was refined and improved and this model represents a smaller version of a common catapult style of the time.\u003c\/p\u003e\n\u003cp class=\"aplus-p3\"\u003eIt can fire the small clay balls (included) and other soft projectiles over 15 feet!\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"a-section a-spacing-none premium-aplus-column\"\u003e\n\u003cdiv class=\"a-section a-spacing-none column-description\"\u003e\n\u003cp class=\"aplus-p3\"\u003eThis catapult kit is based on Da Vinci's drawings from the Codex Atlanticus, the Da Vinci catapult kit uses the power stored in the tension of bent wood, (propulsion system ) to launch projectiles over 4 meters!\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003eWith no modifications you can experiment with flinging grapes, and those fun mini marshmallows too! A great way to introduce graphing for kids!\u003c\/p\u003e\n\u003cp class=\"aplus-p3\"\u003e\u003cspan class=\"a-text-bold\"\u003e\u003cstrong\u003eBuild Time: \u003c\/strong\u003e60+ mins\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"aplus-p3\"\u003e\u003cspan class=\"a-text-bold\"\u003e\u003cstrong\u003eSkill level: \u003c\/strong\u003eMedium\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"aplus-p3\"\u003e\u003cspan class=\"a-text-bold\"\u003eAPPROX. 230 x 290 MM ASSEMBLED \u003c\/span\u003e\u003cspan class=\"a-text-bold\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"aplus-p3\"\u003e\u003cspan class=\"a-text-bold\"\u003eSuitable for children aged 12 and up.\u003c\/span\u003e\u003c\/p\u003e","brand":"Pathfinders","offers":[{"title":"Default Title","offer_id":38024561459352,"sku":"006990","price":25.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0326\/3840\/2604\/files\/4_a9443a37-cb2b-4cae-9946-2ea79e9810d5.png?v=1731794058"},{"product_id":"pathfinders-build-a-wooden-strauss-bascule-bridge-kit-for-ages-7-up","title":"Build A Wooden Strauss Bascule Bridge Kit for Ages 7 \u0026 Up","description":"\u003ch2\u003eThis is a replica of the Joseph Strauss design that was made all over North America in the 1920‚Äôs and 1930‚Äôs.\u003c\/h2\u003e\n\u003cp\u003eWell known bridges of this type are the Johnston Street (Blue Bridge) in Victoria, B.C., Wishka River bridge in Washington, the Ashtaula Bridge in Ohio, the Cherry Street bridge in Toronto and the Third Street Bridge in San Francisco.\u003c\/p\u003e\n\u003cp\u003eSized to fit wooden train sets, this bridge is an elegant reminder of the cool truss bridges that used to be built years ago and are still in use!\u003c\/p\u003e\n\u003cp\u003eGreat to use for school bridge studies and to learn more about interesting linkages, this kit will bring a new level of sophistication to playing with wooden cars and trains. Graffiti is not included, but that gives you the chance to be creative!\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"a-list-item\"\u003e\u003cspan\u003ePerfect for connecting the deep abyss between two pillows, or even helping toys get across those difficult rough parts on the rug, this model truss will inspire a whole new generation of budding engineers who see spaces that need connecting as a challenge to address.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"a-list-item\"\u003eComes complete with all pieces pre-cut and ready to assemble. \u003c\/span\u003e\u003cspan class=\"a-list-item\"\u003eGlue included.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"a-list-item\"\u003eSuitable for beginner model makers. \u003c\/span\u003e\u003cspan class=\"a-list-item\"\u003eEasy to understand instructions.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"a-list-item\"\u003e\u003cspan\u003eAPPROX. 254 x 533 x 75 MM ASSEMBLED¬†\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"a-list-item\"\u003e\u003cspan\u003eSuitable for children aged 7 and up.\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Pathfinders","offers":[{"title":"Default Title","offer_id":38024562933912,"sku":"G011011","price":20.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0326\/3840\/2604\/files\/2_b44d4a2b-8f9a-45f5-9897-d26595095dca.png?v=1754548053"},{"product_id":"crookes-solar-radiometer-with-tapered-clear-stem-and-clear-globe","title":"Crooke's Solar Radiometer, Tapered Clear Stem, Clear Globe","description":"\u003cp\u003eSolar radiometers are also known as light mills because light moves their blades as opposed to wind for windmills. They consist of an airtight bulb containing a partial vacuum. Inside the glass bulb is a fine vertical spindle with a set of vanes mounted at the top. When the glass bulb is exposed to light, the vanes are propelled around, the speed of propulsion increases with the intensity of light, providing a qualitative way of measuring electromagnetic radiation.\u003c\/p\u003e \u003cp\u003eThe Crookes radiometer was invented by the chemist Sir William Crookes as the by-product of some chemical research. In the course of very accurate quantitative chemical work, he was weighing samples in a partially evacuated chamber to reduce the effect of air currents, and noticed the weightings were disturbed when sunlight shone on the balance. Investigating this effect, he devised the device named after him, still manufactured and sold to this day as a curiosity item. This version is both a scientific curiosity and a beautiful ornament.\u003c\/p\u003e \u003cp\u003e\u003cspan\u003eThese days the Solar radiometer, or Crooke's radiometer (named after Sir William Crooke who invented them), is more of a beautiful science gizmo than a means of accurate measurement. Our Solar Radiometer shop stocks a range of exquisite radiometers which make unusual and interesting gifts for scientists and science enthusiasts.\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003eMaterial: Glass\u003c\/p\u003e \u003cp\u003eDimensions: 185mm x 60mm\u003c\/p\u003e \u003cp\u003eWeight: 46 grams\u003c\/p\u003e","brand":"Curious Minds","offers":[{"title":"Default Title","offer_id":40232126578840,"sku":"002959","price":28.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0326\/3840\/2604\/files\/ea3d5ce5-aae9-49c2-914f-3802a36817c4.jpg?v=1753345859"},{"product_id":"crookes-solar-radiometer-with-short-blue-stem-clear-globe","title":"Crooke's Solar Radiometer, Short Blue Stem, Clear Globe","description":"\u003cp\u003eSolar radiometers are also known as light mills because light moves their blades as opposed to wind for windmills. They consist of an airtight bulb containing a partial vacuum. Inside the glass bulb is a fine vertical spindle with a set of vanes mounted at the top. When the glass bulb is exposed to light, the vanes are propelled around, the speed of propulsion increases with the intensity of light, providing a qualitative way of measuring electromagnetic radiation.\u003c\/p\u003e \u003cp\u003eThe Crookes radiometer was invented by the chemist Sir William Crookes as the by-product of some chemical research. In the course of very accurate quantitative chemical work, he was weighing samples in a partially evacuated chamber to reduce the effect of air currents, and noticed the weightings were disturbed when sunlight shone on the balance. Investigating this effect, he devised the device named after him, still manufactured and sold to this day as a curiosity item. This version is both a scientific curiosity and a beautiful ornament.\u003c\/p\u003e \u003cp\u003e\u003cspan\u003eThese days the Solar radiometer, or Crooke's radiometer (named after Sir William Crooke who invented them), is more of a beautiful science gizmo than a means of accurate measurement. Our Solar Radiometer shop stocks a range of exquisite radiometers which make unusual and interesting gifts for scientists and science enthusiasts.\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003eMaterial: Glass\u003c\/p\u003e \u003cp\u003eDimensions: 130mm x 70mm\u003c\/p\u003e \u003cp\u003eWeight: 56 grams\u003c\/p\u003e","brand":"Curious Minds","offers":[{"title":"Default Title","offer_id":40270747893912,"sku":"C013350","price":28.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0326\/3840\/2604\/files\/65f0fd1a-4065-45a9-bdf8-ced67febd0b4.jpg?v=1719413731"},{"product_id":"crookes-solar-radiometer-with-short-green-stem-and-clear-globe","title":"Crooke's Solar Radiometer, Short Green Stem, Clear Globe","description":"\u003cp data-sanitized-data-mce-fragment=\"1\"\u003eSolar radiometers are also known as light mills because light moves their blades as opposed to wind for windmills. They consist of an airtight bulb containing a partial vacuum. Inside the glass bulb is a fine vertical spindle with a set of vanes mounted at the top. When the glass bulb is exposed to light, the vanes are propelled around, the speed of propulsion increases with the intensity of light, providing a qualitative way of measuring electromagnetic radiation.\u003c\/p\u003e \u003cp data-sanitized-data-mce-fragment=\"1\"\u003eThe Crookes radiometer was invented by the chemist Sir William Crookes as the by-product of some chemical research. In the course of very accurate quantitative chemical work, he was weighing samples in a partially evacuated chamber to reduce the effect of air currents, and noticed the weightings were disturbed when sunlight shone on the balance. Investigating this effect, he devised the device named after him, still manufactured and sold to this day as a curiosity item. This version is both a scientific curiosity and a beautiful ornament.\u003c\/p\u003e \u003cp data-sanitized-data-mce-fragment=\"1\"\u003e\u003cspan data-sanitized-data-mce-fragment=\"1\"\u003eThese days the Solar radiometer, or Crooke's radiometer (named after Sir William Crooke who invented them), is more of a beautiful science gizmo than a means of accurate measurement. Our Solar Radiometer shop stocks a range of exquisite radiometers which make unusual and interesting gifts for scientists and science enthusiasts.\u003c\/span\u003e\u003c\/p\u003e \u003cp data-sanitized-data-mce-fragment=\"1\"\u003e\u003cspan\u003eMaterial: Glass\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eDimensions: 130mm x 65mm\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eWeight: 52 grams\u003c\/span\u003e\u003c\/p\u003e","brand":"Curious Minds","offers":[{"title":"Default Title","offer_id":40270747959448,"sku":"C013353","price":28.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0326\/3840\/2604\/files\/c6565fc1-0277-43b5-bb98-fdfebecacf11.jpg?v=1719413750"},{"product_id":"crookes-solar-radiometer-with-short-clear-stem-and-amber-globe","title":"Crooke's Solar Radiometer, Short Clear Stem, Amber Globe","description":"\u003cp\u003eSolar radiometers are also known as light mills because light moves their blades as opposed to wind for windmills. They consist of an airtight bulb containing a partial vacuum. Inside the glass bulb is a fine vertical spindle with a set of vanes mounted at the top. When the glass bulb is exposed to light, the vanes are propelled around, the speed of propulsion increases with the intensity of light, providing a qualitative way of measuring electromagnetic radiation.\u003c\/p\u003e \u003cp\u003eThe Crookes radiometer was invented by the chemist Sir William Crookes as the by-product of some chemical research. In the course of very accurate quantitative chemical work, he was weighing samples in a partially evacuated chamber to reduce the effect of air currents, and noticed the weightings were disturbed when sunlight shone on the balance. Investigating this effect, he devised the device named after him, still manufactured and sold to this day as a curiosity item. This version is both a scientific curiosity and a beautiful ornament.\u003c\/p\u003e \u003cp\u003e\u003cspan\u003eThese days the Solar radiometer, or Crooke's radiometer (named after Sir William Crooke who invented them), is more of a beautiful science gizmo than a means of accurate measurement. Our Solar Radiometer shop stocks a range of exquisite radiometers which make unusual and interesting gifts for scientists and science enthusiasts.\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003eMaterial: Glass\u003c\/p\u003e \u003cp\u003eDimensions: 110mm x 55mm\u003c\/p\u003e \u003cp\u003eWeight: 34 grams\u003c\/p\u003e","brand":"Curious Minds","offers":[{"title":"Default Title","offer_id":40270748024984,"sku":"C013402","price":28.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0326\/3840\/2604\/files\/b244f9ec-cc02-4d9d-bfba-fa6ae7f6035e.jpg?v=1719413769"},{"product_id":"crookes-solar-radiometer-with-tall-amber-stem-and-clear-globe","title":"Crooke's Solar Radiometer, Tall Amber Stem, Clear Globe","description":"\u003cp data-sanitized-data-mce-fragment=\"1\"\u003eSolar radiometers are also known as light mills because light moves their blades as opposed to wind for windmills. They consist of an airtight bulb containing a partial vacuum. Inside the glass bulb is a fine vertical spindle with a set of vanes mounted at the top. When the glass bulb is exposed to light, the vanes are propelled around, the speed of propulsion increases with the intensity of light, providing a qualitative way of measuring electromagnetic radiation.\u003c\/p\u003e \u003cp data-sanitized-data-mce-fragment=\"1\"\u003eThe Crookes radiometer was invented by the chemist Sir William Crookes as the by-product of some chemical research. In the course of very accurate quantitative chemical work, he was weighing samples in a partially evacuated chamber to reduce the effect of air currents, and noticed the weightings were disturbed when sunlight shone on the balance. Investigating this effect, he devised the device named after him, still manufactured and sold to this day as a curiosity item. This version is both a scientific curiosity and a beautiful ornament.\u003c\/p\u003e \u003cp data-sanitized-data-mce-fragment=\"1\"\u003e\u003cspan data-sanitized-data-mce-fragment=\"1\"\u003eThese days the Solar radiometer, or Crooke's radiometer (named after Sir William Crooke who invented them), is more of a beautiful science gizmo than a means of accurate measurement. Our Solar Radiometer shop stocks a range of exquisite radiometers which make unusual and interesting gifts for scientists and science enthusiasts.\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003eMaterial: Glass\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eDimensions: 170mm x 60mm\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eWeight: 42 grams\u003c\/span\u003e\u003c\/p\u003e","brand":"Curious Minds","offers":[{"title":"Default Title","offer_id":40270748287128,"sku":"C013404","price":28.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0326\/3840\/2604\/products\/c62c5af2-98be-4f82-af0e-24fc63f53b43.jpg?v=1660389519"},{"product_id":"crookes-solar-radiometer-with-tall-clear-stem-and-green-globe","title":"Crooke's Solar Radiometer, Tall Clear Stem, Green Globe","description":"\u003cp data-sanitized-data-mce-fragment=\"1\"\u003eSolar radiometers are also known as light mills because light moves their blades as opposed to wind for windmills. They consist of an airtight bulb containing a partial vacuum. Inside the glass bulb is a fine vertical spindle with a set of vanes mounted at the top. When the glass bulb is exposed to light, the vanes are propelled around, the speed of propulsion increases with the intensity of light, providing a qualitative way of measuring electromagnetic radiation.\u003c\/p\u003e \u003cp data-sanitized-data-mce-fragment=\"1\"\u003eThe Crookes radiometer was invented by the chemist Sir William Crookes as the by-product of some chemical research. In the course of very accurate quantitative chemical work, he was weighing samples in a partially evacuated chamber to reduce the effect of air currents, and noticed the weightings were disturbed when sunlight shone on the balance. Investigating this effect, he devised the device named after him, still manufactured and sold to this day as a curiosity item. This version is both a scientific curiosity and a beautiful ornament.\u003c\/p\u003e \u003cp data-sanitized-data-mce-fragment=\"1\"\u003e\u003cspan data-sanitized-data-mce-fragment=\"1\"\u003eThese days the Solar radiometer, or Crooke's radiometer (named after Sir William Crooke who invented them), is more of a beautiful science gizmo than a means of accurate measurement. Our Solar Radiometer shop stocks a range of exquisite radiometers which make unusual and interesting gifts for scientists and science enthusiasts.\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003eMaterial: Glass\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eDimensions: 170mm x 60mm\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eWeight: 46 grams\u003c\/span\u003e\u003c\/p\u003e","brand":"Curious Minds","offers":[{"title":"Default Title","offer_id":40270748647576,"sku":"C013405","price":32.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0326\/3840\/2604\/files\/3129d9c8-7d95-4325-a0b9-040fc57fa737.jpg?v=1719413788"},{"product_id":"crookes-solar-radiometer-with-tall-twisted-clear-stem-and-blue-globe","title":"Crooke's Solar Radiometer, Tall Twisted Clear Stem, Blue Globe","description":"\u003cp data-sanitized-data-mce-fragment=\"1\"\u003eSolar radiometers are also known as light mills because light moves their blades as opposed to wind for windmills. They consist of an airtight bulb containing a partial vacuum. Inside the glass bulb is a fine vertical spindle with a set of vanes mounted at the top. When the glass bulb is exposed to light, the vanes are propelled around, the speed of propulsion increases with the intensity of light, providing a qualitative way of measuring electromagnetic radiation.\u003c\/p\u003e \u003cp data-sanitized-data-mce-fragment=\"1\"\u003eThe Crookes radiometer was invented by the chemist Sir William Crookes as the by-product of some chemical research. In the course of very accurate quantitative chemical work, he was weighing samples in a partially evacuated chamber to reduce the effect of air currents, and noticed the weightings were disturbed when sunlight shone on the balance. Investigating this effect, he devised the device named after him, still manufactured and sold to this day as a curiosity item. This version is both a scientific curiosity and a beautiful ornament.\u003c\/p\u003e \u003cp data-sanitized-data-mce-fragment=\"1\"\u003e\u003cspan data-sanitized-data-mce-fragment=\"1\"\u003eThese days the Solar radiometer, or Crooke's radiometer (named after Sir William Crooke who invented them), is more of a beautiful science gizmo than a means of accurate measurement. Our Solar Radiometer shop stocks a range of exquisite radiometers which make unusual and interesting gifts for scientists and science enthusiasts.\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003eMaterial: Glass\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eDimensions: 180mm x 60mm\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eWeight: 46 grams\u003c\/span\u003e\u003c\/p\u003e","brand":"Curious Minds","offers":[{"title":"Default Title","offer_id":40270749335704,"sku":"C013407","price":34.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0326\/3840\/2604\/files\/237e085e-7131-4bff-8aa1-c30abbd62c74.jpg?v=1719413807"},{"product_id":"crookes-solar-radiometer-tall-twisted-clear-stem-globe-green-mill","title":"Crooke's Solar Radiometer, Tall Twisted Clear Stem, Clear Globe, Green Mill","description":"\u003cp data-sanitized-data-mce-fragment=\"1\"\u003eSolar radiometers are also known as light mills because light moves their blades as opposed to wind for windmills. They consist of an airtight bulb containing a partial vacuum. Inside the glass bulb is a fine vertical spindle with a set of vanes mounted at the top. When the glass bulb is exposed to light, the vanes are propelled around, the speed of propulsion increases with the intensity of light, providing a qualitative way of measuring electromagnetic radiation.\u003c\/p\u003e \u003cp data-sanitized-data-mce-fragment=\"1\"\u003eThe Crookes radiometer was invented by the chemist Sir William Crookes as the by-product of some chemical research. In the course of very accurate quantitative chemical work, he was weighing samples in a partially evacuated chamber to reduce the effect of air currents, and noticed the weightings were disturbed when sunlight shone on the balance. Investigating this effect, he devised the device named after him, still manufactured and sold to this day as a curiosity item. This version is both a scientific curiosity and a beautiful ornament.\u003c\/p\u003e \u003cp data-sanitized-data-mce-fragment=\"1\"\u003e\u003cspan data-sanitized-data-mce-fragment=\"1\"\u003eThese days the Solar radiometer, or Crooke's radiometer (named after Sir William Crooke who invented them), is more of a beautiful science gizmo than a means of accurate measurement. Our Solar Radiometer shop stocks a range of exquisite radiometers which make unusual and interesting gifts for scientists and science enthusiasts.\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003e\u003cspan\u003eMaterial: Glass\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eDimensions: 180mm x 60mm\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eWeight: 52 grams\u003c\/span\u003e\u003c\/p\u003e","brand":"Curious Minds","offers":[{"title":"Default Title","offer_id":40270749532312,"sku":"C013408","price":32.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0326\/3840\/2604\/files\/e7d0bc4f-7218-466c-b2b9-8f4f8e4bf7bd.jpg?v=1719413829"},{"product_id":"hemisferium-horizontal-sundial-pendant-chain-brass-h211","title":"Hemisferium Horizontal Sundial Pendant Chain (Brass)","description":"\u003cp\u003eThis French shell-shaped horizontal dial has been made for use at 50º latitude. The piece is a replica of a dial circa 1800. On the hour scale, the hour lines radiate from the Sun’s face. In the centre, there is a circular hole for the missing gnomon.\u003c\/p\u003e \u003cp\u003eThe original, made of copper, is at the National Maritime Museum, Greenwich, London.\u003c\/p\u003e \u003cp\u003eAttention to detail, historical interest and its beautiful design is brought to life in this elegant ring dial.\u003c\/p\u003e \u003cp\u003eThis instrument allows you to carry around a fantastic piece of historic science and represents a time of exploration and astronomical wonder.\u003c\/p\u003e \u003cp\u003eNon-functional item.\u003c\/p\u003e \u003cp\u003eThe two sides of the pendant are identical.\u003c\/p\u003e \u003cp\u003eNon-functional instrument.\u003c\/p\u003e \u003cp\u003eAvailable in brass or silver finish.\u003c\/p\u003e \u003cp\u003eMeasurements:\u003cbr\u003eDiameter: 25mm \/ Thickness: 5mm \/ Weight with chain: 20g\u003c\/p\u003e","brand":"Hemisferium","offers":[{"title":"Default Title","offer_id":42418109022465,"sku":"C013331","price":25.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0326\/3840\/2604\/products\/e66bca2f-e738-4de5-a798-17f507a7acf4.jpg?v=1654875072"},{"product_id":"hemisferium-horizontal-sundial-pendant-chain-silver","title":"Hemisferium Miniature Horizontal Sundial Pendant Chain (Silver)","description":"\u003cp\u003eThis French shell-shaped horizontal dial has been made for use at 50º latitude. The piece is a replica of a dial circa 1800. On the hour scale, the hour lines radiate from the Sun’s face. In the centre, there is a circular hole for the missing gnomon.\u003c\/p\u003e\n\u003cp\u003eThe original, made of copper, is at the National Maritime Museum, Greenwich, London.\u003c\/p\u003e\n\u003cp\u003eAttention to detail, historical interest and its beautiful design is brought to life in this elegant ring dial.\u003c\/p\u003e\n\u003cp\u003eThis instrument allows you to carry around a fantastic piece of historic science and represents a time of exploration and astronomical wonder.\u003c\/p\u003e\n\u003cp\u003eNon-functional item.\u003c\/p\u003e\n\u003cp\u003eThe two sides of the pendant are identical.\u003c\/p\u003e\n\u003cp\u003eNon-functional instrument.\u003c\/p\u003e\n\u003cp\u003eAvailable in brass or silver finish.\u003c\/p\u003e\n\u003cp\u003eMeasurements:\u003cbr\u003eDiameter: 25mm \/ Thickness: 5mm \/ Weight with chain: 20g\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHemisferium products are handmade ornaments with limited functionality, made primarily for decoration purposes. As they are handcrafted there may be small imperfections.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Hemisferium","offers":[{"title":"Default Title","offer_id":42418109055233,"sku":"C013027","price":25.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0326\/3840\/2604\/products\/5d422067-f664-4d3a-b7e5-205aec35c95c.jpg?v=1654875200"},{"product_id":"hemisferium-perpetual-calendar-pendant-chain-brass-plated","title":"Hemisferium Miniature Perpetual Calendar Pendant Chain (Brass Plated)","description":"\u003cp\u003eThe Perpetual Calendar can find any date, day of the week and month from January 1, 1600 to December 31, 2799 including the bissextile years also known as leap years. The original piece on which this miniature replica is designed was made in France between 1650 and 1700 and is kept at the National Maritime Museum in London.\u003c\/p\u003e \u003cp\u003eThe calendar consists of three rotatable discs set on top of the main disc with a date scale and a lunar age scale among other features that can be adjusted using the instructions to work out what day it was or will be at some point in the future.\u003c\/p\u003e \u003cp\u003eThe two sides of the pendant are identical.\u003c\/p\u003e \u003cp\u003eNon-functional instrument.\u003c\/p\u003e \u003cp\u003eAvailable in brass or silver finish.\u003c\/p\u003e \u003cp\u003eMeasurements:\u003cbr\u003eDiameter: 25mm \/ Thickness: 5mm \/ Weight with chain: 20g\u003c\/p\u003e","brand":"Hemisferium","offers":[{"title":"Default Title","offer_id":42418109088001,"sku":"C013026","price":25.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0326\/3840\/2604\/products\/6ba4cbee-5c52-40ce-8a20-443840796cc4.jpg?v=1654875205"},{"product_id":"hemisferium-miniature-rojas-astrolabe-pendant-chain","title":"Hemisferium Miniature Rojas Astrolabe Pendant Chain (Silver Plated)","description":"\u003cp\u003eThe astrolabe reached the peak of its popularity in the 16th century. The Spanish astronomer and mathematician Juan de Rojas presented the Orthographic Projection to the European public in 1550. This projection was successfully applied in a new type of astrolabe that offered remarkable advantages over its predecessors because it could be used in any latitude.\u003c\/p\u003e \u003cp\u003eThis instrument, in particular, is non-functioning however, it allows you to carry around a fantastic piece of historic science and represents a time of exploration and astronomical wonder.\u003c\/p\u003e \u003cp\u003eAstrolabe, from the Greek, “star searcher”, was introduced to Europe by the Arabs in the early 12th century. It became a vital tool for astronomers, astrologers, and surveyors. This astronomical computer was used to estimate the time, to measure heights of celestial bodies and geographical accidents, determine the local latitude, estimate the sunrise and sunset time and to draw horoscopes.\u003c\/p\u003e \u003cp\u003eThe astrolabe's importance not only comes from the early development of astronomy but is also effective for determining latitude on land or calm seas. It was less reliable on the moving deck of a ship in rough seas, so the mariner's astrolabe was developed to solve that problem.\u003c\/p\u003e \u003cp\u003eIn the 9th century, Muslim astronomers improved the device by introducing angular scales and azimuth lines which added to its beauty.\u003c\/p\u003e \u003cp\u003eTo use an astrolabe, the moving parts are first set to a specific date and a specific time. Once set, solar system objects are represented (both visible and invisible) in their relative positions on the instrument.\u003c\/p\u003e \u003cp\u003eThe typical astrolabe was not a navigation tool, however. The similarly named 'mariner's' astrolabe was used for this purpose and was used widely in the European Renaissance.\u003c\/p\u003e \u003cp\u003eThis new astrolabe is made by hand in the same way as astrolabes were over a thousand years ago. However, the map of the sky is up to date for the 21st century.\u003c\/p\u003e \u003cp\u003eAttention to detail, historical interest and its beautiful design is brought to life in this elegant astrolabe.\u003c\/p\u003e \u003cp\u003eThe two sides of the pendant are identical.\u003c\/p\u003e \u003cp\u003eMeasurements:\u003cbr\u003eDiameter: 25mm \/ Thickness: 5mm \/ Weight with chain: 20g\u003c\/p\u003e","brand":"Hemisferium","offers":[{"title":"Default Title","offer_id":42418109153537,"sku":"C013022","price":25.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0326\/3840\/2604\/products\/6a1950ab-382c-4c2c-bb86-eee6c9a33692.jpg?v=1654875213"},{"product_id":"hemisferium-canterburys-quadrant","title":"Hemisferium Canterbury's Quadrant","description":"\u003cp\u003eThis piece is a sundial for prayers and mass hour. The original jewel was found in an archaeological dig at the House of Agnes, in Canterbury, England. It is believed to date from 1388 and is currently held in the British Museum in London.\u003c\/p\u003e\n\u003cp\u003eThe dial must be hung up facing the sun to find the time like any other altitude sundial, introducing the little bar on the corresponding Month´s hole.\u003c\/p\u003e\n\u003cp\u003eThe exquisitely detailed replica dial has been updated for London’s latitude, 50º. Historical interest and its beautiful design is brought to life in this Canterbury Quadrant. The instrument allows you to carry around a fantastic piece of historic science and represents a time of astronomical wonder.\u003c\/p\u003e\n\u003cp\u003eThe Quadrant measures 80mm in length, 27mm across and 6mm thick.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHemisferium products are handmade ornaments with limited functionality, made primarily for decoration purposes. As they are handcrafted there may be small imperfections.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Hemisferium","offers":[{"title":"Default Title","offer_id":42418109448449,"sku":"C013014","price":55.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0326\/3840\/2604\/products\/4f0847e8-b776-41ba-90aa-f78693b270be.jpg?v=1654874930"},{"product_id":"hemisferium-miniature-eastern-astrolabe-piece-on-stand","title":"Hemisferium Miniature Eastern Astrolabe - Piece on stand","description":"\u003cp\u003eThis planispheric astrolabe was developed after the one made by Diya´al Din Muhammad (Lahore, 1647).\u003c\/p\u003e \u003cp\u003eThe original piece can be found at the Adler Planetarium \u0026amp; Astronomy Museum in Chicago.\u003c\/p\u003e \u003cp\u003eThe stars on its rete and all other calculus have been updated to make it functional today. It is set for latitude 22º (Mecca).\u003c\/p\u003e \u003cp\u003eAstrolabe, from the Greek, “star searcher”, was introduced to Europe by the Arabs in the early 12th century. It became a vital tool for astronomers, astrologers, and surveyors.\u003c\/p\u003e \u003cp\u003eThis astronomical computer was used to estimate the time, to measure heights of celestial bodies and geographical accidents, determine the local latitude, estimate the sunrise and sunset time and to draw horoscopes.\u003c\/p\u003e \u003cp\u003eThe astrolabe's importance not only comes from the early development of astronomy but is also effective for determining latitude on land or calm seas. It was less reliable on the moving deck of a ship in rough seas, so the mariner's astrolabe was developed to solve that problem.\u003c\/p\u003e \u003cp\u003eIn the 9th century, Muslim astronomers improved the device by introducing angular scales and azimuth lines which added to its beauty.\u003c\/p\u003e \u003cp\u003eTo use an astrolabe, the moving parts are first set to a specific date and a specific time. Once set, solar system objects are represented (both visible and invisible) in their relative positions on the instrument. The typical astrolabe was not a navigation tool, however. The similarly named 'mariner's' astrolabe was used for this purpose and was used widely in the European Renaissance.\u003c\/p\u003e \u003cp\u003eThis new astrolabe is made by hand in the same way as astrolabes were over a thousand years ago. However, the map of the sky is up to date for the 21st century.\u003c\/p\u003e \u003cp\u003eAttention to detail, historical interest and its beautiful design is brought to life in this elegant astrolabe. It comes complete on a stand with a user manual.\u003c\/p\u003e \u003cp\u003eThe astrolabe measures 130mm in height, 45mm across, and 5mm thick.\u003c\/p\u003e","brand":"Hemisferium","offers":[{"title":"Default Title","offer_id":42418109481217,"sku":"C013013","price":42.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0326\/3840\/2604\/products\/ad6b68ba-52d2-4134-8e33-14095f750ca2.jpg?v=1654875192"},{"product_id":"hemisferium-miniature-tide-computer-piece-on-stand","title":"Hemisferium Miniature Tide Computer - Piece on stand","description":"\u003cp\u003eThis piece is a replica of a Nocturnal and Tidal Abacus from 1570, signed by Humphrey Cole, an English maker of scientific instruments and engraver.\u003c\/p\u003e \u003cp\u003eCurrently, this instrument can be found in the British Museum, London. One of its faces is a Tidal Abacus and the other is a Nocturnal.\u003c\/p\u003e \u003cp\u003eThe European Horologium Noctis was made in the mid-17th century and was used to keep time at night. By observing the stars, it was noted that certain boreal constellations rotated around the Pole Star as if a giant clock hand were keeping time around a celestial sphere of 24 hours.\u003c\/p\u003e \u003cp\u003eThe abacus or tidal calculator is used to figure the time of the tides. The tides, with their constant change in the water level, greatly affect navigation both in harbours and for fishing. On this face, the outer circle is divided into 360 degrees with 1-degree intervals. The centre ring is divided into 12-hour sections, placed so that each quadrant moves in a clockwise direction. The interior is an exquisite compass rose with 32 directions.\u003c\/p\u003e \u003cp\u003eThe Miniature Tide Computer measures 130mm in height, 50mm across and 6mm thick.\u003c\/p\u003e","brand":"Hemisferium","offers":[{"title":"Default Title","offer_id":42418109513985,"sku":"C013012","price":42.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0326\/3840\/2604\/products\/fbf6bc44-94b6-462f-854b-47d3df67488a.jpg?v=1654875223"},{"product_id":"hemisferium-miniature-philip-ii-sundial-clock","title":"Hemisferium  Miniature Philip 2nd Sundial - Piece on stand","description":"\u003cp\u003eThis vertical disk sundial from the end of the 16th century is a fascinating historical piece. One side has an effigy of King Philip II of Spain and the other side is a sundial. The original bronze piece is kept at the British Museum in London.\u003c\/p\u003e \u003cp\u003eBetween the 16th and 17th century, a close link existed between Spain and the Low Countries (Belgium, Netherlands, and Luxembourg) marked by the mutual influence and a high level of cooperation that occurred between their scientists.\u003c\/p\u003e \u003cp\u003eTo reinforce the Spanish empire, Philip II supported a variety of studies in astronomy, cartography and nautical astronomy at the renowned University of Louvain in Brussels. Some of the most beautiful and precise scientific instruments of the time were created there.\u003c\/p\u003e \u003cp\u003eThis beautiful Renaissance piece is displayed on an elegant wooden stand and will make an eye-catching decorative centrepiece.\u003c\/p\u003e \u003cp\u003eThe Sundial measures 130mm in height, 45mm across and 4mm thick.\u003c\/p\u003e","brand":"Hemisferium","offers":[{"title":"Default Title","offer_id":42418109645057,"sku":"C013009","price":42.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0326\/3840\/2604\/products\/ea5d814d-ea6c-4406-a9cd-99c8b3c486e1.jpg?v=1654874856"},{"product_id":"hemisferium-hanging-astronomical-ring-dial-pendant","title":"Hemisferium Hanging Astronomical Ring Dial Pendant","description":"\u003cp\u003eThe Astronomical Ring Dial is a replica modelled from an early instrument created by Dutch mathematician and cartographer, Reiner Gemma Frisius, in the 16th Century. It was used by scientists and navigators to make astronomic measurements and determine the time during the day or at night.\u003c\/p\u003e \u003cp\u003eSeveral different kinds of astronomic dials existed, and the larger ones could indicate the time to the minute and for a long time were the only way to know if mechanical clocks were functioning correctly without having to rely on an astronomical observatory.\u003c\/p\u003e \u003cp\u003eIt is composed of a ring that can be adjusted to various latitudes, a meridian ring showing the latitude scale, a moveable hour ring, a central grooved bar that is marked with the months of the year and a perforated cylinder, which moves through the bar. Once set up properly, it will indicate the local solar time.\u003c\/p\u003e \u003cp\u003eAlthough known as the astronomical ring, it is principally employed as an equatorial solar universal quadrant. It was very popular in the Renaissance period and is regaining its popularity today amongst collectors whether they use it as a stunning decorative piece or as a functioning scientific instrument.\u003c\/p\u003e \u003cp\u003eThe ring dial measures 45mm across and 4mm thick and comes complete hanging on a chord.\u003c\/p\u003e \u003cp\u003eMaterial: Zamak with brass lacquer. Sapele wood base tainted with natural wax and polished.\u003c\/p\u003e","brand":"Hemisferium","offers":[{"title":"Default Title","offer_id":42418109677825,"sku":"C013008","price":55.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0326\/3840\/2604\/products\/987775ba-0b9d-4019-b671-fc3bfa51fe31.jpg?v=1654875037"},{"product_id":"hemisferium-miniature-astronomical-ring-dial","title":"Hemisferium Miniature Astronomical Ring Dial - Piece on stand","description":"\u003cp\u003eThe Astronomical Ring Dial is a replica modelled from an early instrument created by Dutch mathematician and cartographer, Reiner Gemma Frisius, in the 16th Century. It was used by scientists and navigators to make astronomic measurements and determine the time during the day or at night.\u003c\/p\u003e \u003cp\u003eSeveral different kinds of astronomic dials existed, and the larger ones could indicate the time to the minute and for a long time were the only way to know if mechanical clocks were functioning correctly without having to rely on an astronomical observatory.\u003c\/p\u003e \u003cp\u003eIt is composed of a ring that can be adjusted to various latitudes, a meridian ring showing the latitude scale, a moveable hour ring, a central grooved bar that is marked with the months of the year and a perforated cylinder, which moves through the bar. Once set up properly, it will indicate the local solar time.\u003c\/p\u003e \u003cp\u003eAlthough known as the astronomical ring, it is principally employed as an equatorial solar universal quadrant. It was very popular in the Renaissance period and is regaining its popularity today amongst collectors whether they use it as a stunning decorative piece or as a functioning scientific instrument.\u003c\/p\u003e \u003cp\u003eThe ring dial measures 130mm in height, 45mm across and 4mm thick and comes on an elegant wooden stand.\u003c\/p\u003e \u003cp\u003eMaterial: Zamak with brass lacquer. Sapele wood base tainted with natural wax and polished.\u003c\/p\u003e","brand":"Hemisferium","offers":[{"title":"Default Title","offer_id":42418109710593,"sku":"C013007","price":50.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0326\/3840\/2604\/products\/65635bd9-a6bc-416f-9d90-9597f3c1946c.jpg?v=1654875182"},{"product_id":"hemisferium-hanging-philip-ii-sundial-pendant","title":"Hemisferium Hanging Philip 2nd Sundial Pendant","description":"\u003cp\u003eThis vertical disk sundial from the end of the 16th century is a fascinating historical piece. One side has an effigy of King Philip II of Spain and the other side is a sundial. The original bronze piece is kept at the British Museum in London.\u003c\/p\u003e\n\u003cp\u003eBetween the 16th and 17th century, a close link existed between Spain and the Low Countries (Belgium, Netherlands, and Luxembourg) marked by the mutual influence and a high level of cooperation that occurred between their scientists.\u003c\/p\u003e\n\u003cp\u003eTo reinforce the Spanish empire, Philip II supported a variety of studies in astronomy, cartography and nautical astronomy at the renowned University of Louvain in Brussels. Some of the most beautiful and precise scientific instruments of the time were created there.\u003c\/p\u003e\n\u003cp\u003eThis beautiful Renaissance piece is hung on an elegant chord and will make an eye-catching necklace or decoration.\u003c\/p\u003e\n\u003cp\u003eThe Sundial measures 45mm across and 4mm thick.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHemisferium products are handmade ornaments with limited functionality, made primarily for decoration purposes. As they are handcrafted there may be small imperfections.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Hemisferium","offers":[{"title":"Default Title","offer_id":42418109743361,"sku":"C013006","price":45.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0326\/3840\/2604\/products\/fa429f4b-e117-4491-84ea-015298edc456.jpg?v=1654875041"},{"product_id":"hemisferium-hanging-altitude-ring-dial-40º-or-50º-latitude","title":"Hemisferium Hanging  Altitude Ring dial (40º or 50º Lat.)","description":"\u003cp\u003e15th-century mariners found a way to estimate their latitude to find their location while at sea. It was based on a well-known fact that the height of celestial bodies depends on the latitude.\u003c\/p\u003e\n\u003cp\u003eThe Altitude sundial takes this name because the parameter of its construction is based on Sun’s altitude. This brass scientific instrument is available for two different latitudes: 40º or 50º.\u003c\/p\u003e\n\u003cp\u003eThe dial is composed of a circular band punched with two offsetting symmetrical holes through which the sun rays pass are projected as small, elongated spots of light on the hourly line etched on the interior of the dial. Pedro Nunes, a Portuguese mathematician, cosmologist and professor invented the nonius, a system for taking small measurements on circular instruments such as the ring dial and the astrolabe, allowing for more accurate positioning of ships.\u003c\/p\u003e\n\u003cp\u003eMeasurements:\u003cbr\u003eDiameter: 40mm \/ Width: 21mm \/ Thickness: 4mm\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHemisferium products are handmade ornaments with limited functionality, made primarily for decoration purposes. As they are handcrafted there may be small imperfections.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Hemisferium","offers":[{"title":"Default Title","offer_id":42418109776129,"sku":"C013005","price":60.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0326\/3840\/2604\/products\/5c067954-fa66-4949-94fa-5ad95cce2f76.jpg?v=1654875031"},{"product_id":"hemisferium-miniature-altitude-sundial-40º-or-50º-latitude-piece-on-stand","title":"Hemisferium Miniature Altitude Ring dial (40º or 50º Lat.) Piece on stand","description":"\u003cp\u003e15th-century mariners found a way to estimate their latitude to find their location while at sea. It was based on a well-known fact that the height of celestial bodies depends on the latitude.\u003c\/p\u003e \u003cp\u003eThe Altitude sundial takes this name because the parameter of its construction is based on Sun’s altitude. This brass scientific instrument is available for two different latitudes: 40º or 50º.\u003c\/p\u003e \u003cp\u003eThe dial is composed of a circular band punched with two offsetting symmetrical holes through which the sun rays pass are projected as small, elongated spots of light on the hourly line etched on the interior of the dial. Pedro Nunes, a Portuguese mathematician, cosmologist and professor invented the nonius, a system for taking small measurements on circular instruments such as the ring dial and the astrolabe, allowing for more accurate positioning of ships.\u003c\/p\u003e \u003cp\u003eThe ring dial measures 40mm across, 21mm wide and 4mm thick and comes complete hanging on a chord.\u003c\/p\u003e","brand":"Hemisferium","offers":[{"title":"Default Title","offer_id":42418109808897,"sku":"C013004","price":52.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0326\/3840\/2604\/products\/9e675044-89cd-42aa-a4cb-4dcfa646c1c8.jpg?v=1654875168"},{"product_id":"hemisferium-nocturlabe-miniature-piece-on-stand","title":"Hemisferium Nocturlabe Miniature - Piece on stand.","description":"\u003cp\u003eThis nocturnal watch – \"Horologium Nocturnum\" – is an astronomical instrument that was used to keep time at night. By observing the stars, it was noted that certain boreal constellations rotated around the Pole Star as if a giant clock hand were keeping time around a celestial sphere of 24 hours.\u003c\/p\u003e\n\u003cp\u003eThis particular nocturnal is a reproduction of the one made in 1570 and is designed to calculate the time based on the position of the Pole star and Kochab – the brightest star in the bowl of the Little Dipper asterism. The reverse side is signed by English engraver and maker of scientific instruments, Humphrey Cole.\u003c\/p\u003e\n\u003cp\u003eAttention to detail, historical interest and its beautiful design is brought to life in this elegant Nocturlabe. It comes complete hung on an elegant wooden stand with a user manual.\u003c\/p\u003e\n\u003cp\u003eThe Nocturlabe measures 130mm in height on the stand, 50mm across and 6mm thick.\u003c\/p\u003e\n\u003cp\u003eMaterial: Brass engraved with acid. Sapele wood base tainted with natural wax and polished.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHemisferium products are handmade ornaments with limited functionality, made primarily for decoration purposes. As they are handcrafted there may be small imperfections.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Hemisferium","offers":[{"title":"Default Title","offer_id":42418109841665,"sku":"C013003","price":45.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0326\/3840\/2604\/products\/359b3df9-010d-4faf-a39f-939d747a188d.jpg?v=1654875327"},{"product_id":"hemisferium-miniature-nautical-astrolabe-with-stand","title":"Hemisferium Nautical Astrolabe Miniature Piece on stand.","description":"\u003cp\u003eThe nautical astrolabe is a simplification of the planispherical or astronomical astrolabe and its fundamental purpose is to determine the latitude of a ship by observing the altitude of the sun or other stars such as the Pole Star. The nautical astrolabe has a much heavier design than a typical astrolabe of the time to survive the rough sea conditions and compensate for the movement of the ship.\u003c\/p\u003e\n\u003cp\u003eThis instrument is a reproduction of the Nautical Astrolabe of the “Valence” and belonged to the army of Philipe II (16th century). The original is placed in the National Maritime Museum in Greenwich.\u003c\/p\u003e\n\u003cp\u003eAstrolabe, from the Greek, “star searcher”, was introduced to Europe by the Arabs in the early 12th century. It became a vital tool for astronomers, astrologers, and surveyors. This astronomical computer was used to estimate the time, to measure heights of celestial bodies and geographical accidents, determine the local latitude, estimate the sunrise and sunset time and to draw horoscopes.\u003c\/p\u003e\n\u003cp\u003eThe astrolabe's importance not only comes from the early development of astronomy but is also effective for determining latitude on land or calm seas. It was less reliable on the moving deck of a ship in rough seas, so the mariner's astrolabe was developed to solve that problem.\u003c\/p\u003e\n\u003cp\u003eIn the 9th century, Muslim astronomers improved the device by introducing angular scales and azimuth lines which added to its beauty.\u003c\/p\u003e\n\u003cp\u003eTo use an astrolabe, the moving parts are first set to a specific date and a specific time. Once set, solar system objects are represented (both visible and invisible) in their relative positions on the instrument. The typical astrolabe was not a navigation tool, however. The similarly named 'mariner's' astrolabe was used for this purpose and was used widely in the European Renaissance.\u003cbr\u003eThis new astrolabe is made by hand in the same way as astrolabes were over a thousand years ago. However, the map of the sky is up to date for the 21st century.\u003c\/p\u003e\n\u003cp\u003eAttention to detail, historical interest and its beautiful design is brought to life in this elegant astrolabe. It comes complete on a stand with a user manual.\u003c\/p\u003e\n\u003cp\u003eThe astrolabe measures 130mm in height, 45mm across, and 5mm thick.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHemisferium products are handmade ornaments with limited functionality, made primarily for decoration purposes. As they are handcrafted there may be small imperfections.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Hemisferium","offers":[{"title":"Default Title","offer_id":42418109907201,"sku":"C013001","price":45.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0326\/3840\/2604\/products\/75138278-a085-4b97-863a-14fcf5a89c9b.jpg?v=1654875277"},{"product_id":"hemisferium-modernist-black-praxinoscope","title":"Hemisferium Moderniste Black Praxinoscope","description":"\u003cp\u003eThe Praxinoscope is one of the earliest forms of a motion picture. It works in a very similar manner to a picture flip book, where a series of static images ‘flash’ at frequencies that cause us to perceive them as a continuous moving image.\u003c\/p\u003e \u003cp\u003eThe design of the Praxinoscope is deceptively simple; 12 brass mirrors mounted around a central column reflect a strip of printed paper towards the viewer. When the central frame is spun, each of these mirrors mounted on the cylindrical column break up the reflection of the paper strip into separate blinking images.\u003c\/p\u003e \u003cp\u003eThe Praxinoscope was patented by the Frenchman Emile Reynaud in 1877, who was looking to overcome the deficiencies of the Zoetrope, which enjoyed enormous popularity at the time. His apparatus was the first to eliminate the distorted view of the images in movement caused by insufficient light passing through the small slots of the Zoetrope. This improvement in the quality of the image resulted in immediate popularity for the Praxinoscope.\u003c\/p\u003e \u003cp\u003eThe ‘Moderniste’ Praxinoscope is sat upon a black base with the decoration of the drum based on the artistic movement known as Modernism or Art Nouveau - an ornamental style of art that makes use of its long undulating skewed line and thrived between 1890 and 1910. The beautiful wooden craftsmanship makes this historic item an eye-catching and educational decoration piece, excellent talking point and with 20 animated strips to play, an entertainment marvel!\u003c\/p\u003e \u003cp\u003eThe diameter of the drum is 20 cm and the height of the Praxinoscope is 22 cm.\u003c\/p\u003e","brand":"Hemisferium","offers":[{"title":"Default Title","offer_id":42418110005505,"sku":"C012998","price":111.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0326\/3840\/2604\/products\/bf9b9b7c-fc57-4c04-adc0-b2767bab1a49.jpg?v=1654875232"},{"product_id":"hemisferium-moderniste-copper-praxinoscope","title":"Hemisferium Moderniste Copper Praxinoscope","description":"\u003cp\u003eThe Praxinoscope is one of the earliest forms of a motion picture. It works in a very similar manner to a picture flip book, where a series of static images ‘flash’ at frequencies that cause us to perceive them as a continuous moving image.\u003c\/p\u003e \u003cp\u003eThe design of the Praxinoscope is deceptively simple; 12 brass mirrors mounted around a central column reflect a strip of printed paper towards the viewer. When the central frame is spun, each of these mirrors mounted on the cylindrical column break up the reflection of the paper strip into separate blinking images.\u003c\/p\u003e \u003cp\u003eThe Praxinoscope was patented by the Frenchman Emile Reynaud in 1877, who was looking to overcome the deficiencies of the Zoetrope, which enjoyed enormous popularity at the time. His apparatus was the first to eliminate the distorted view of the images in movement caused by insufficient light passing through the small slots of the Zoetrope. This improvement in the quality of the image resulted in immediate popularity for the Praxinoscope.\u003c\/p\u003e \u003cp\u003eThe ‘Moderniste’ Praxinoscope is sat upon an elegant copper base. The decoration on the drum is based on the artistic movement known as Modernism or Art Nouveau - an ornamental style of art that makes use of its long undulating skewed line and thrived between 1890 and 1910. The beautiful craftsmanship makes this historic item an eye-catching and educational decoration piece, excellent talking point and with 20 animated strips to play, an entertainment marvel!\u003c\/p\u003e \u003cp\u003eThe diameter of the drum is 20 cm and the height of the Praxinoscope is 22 cm.\u003c\/p\u003e","brand":"Hemisferium","offers":[{"title":"Default Title","offer_id":42418110038273,"sku":"C012997","price":111.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0326\/3840\/2604\/products\/d0ca61fe-f96d-47f1-846b-25dc8ed83347.jpg?v=1654875258"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0326\/3840\/2604\/collections\/230311-Grasshopper_Beeswax_Candle_Kit-003.jpg?v=1778228633","url":"https:\/\/curiousminds.co.uk\/collections\/science-gifts-for-adults-1.oembed?page=7","provider":"Curious Minds","version":"1.0","type":"link"}