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Solar Radiometer
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This radiometer is made by traditional Thuringian hand-blowing in Germany, of crystal-clear Lauschaer bottle glass.
In the glass body is a 4-vane drive assembly, which turns under the influence of light. One side of each vane is black, the other is silver.
Height: ca. 15cm. (6 in)
Globe diameter: ca. 8cm. (3.25 in)
The Crookes radiometer, also known as the light mill or solar engine, consists of an airtight glass bulb, containing a partial vacuum. Inside are a set of vanes which are mounted on a... more >>> |
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£25.00 |
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Garden Weather Station
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This simple, completely non-electrical, garden weather station shows temperature, rainfall and wind direction, with an indication of wind speed from the spinning cups. It is very easy to install: either spike it directly into the ground; or attach to a building or shed using cable ties. The temperature and rain gauges have large numerals for long-distance reading. Pole length 58".
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£19.35 |
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Star Globe Plus
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This 30cm (12") diameter star globe shows the main stars when unlit. The constellations are superimposed when lit. Mounted on a solid wood base and chromed plastic meridian. An attractive globe for any room, it will provoke many conversations in your home, office, or classroom. Turn the light off and brilliant lithography delineates the firmament's stars, constellations and nebula. Turn the light on and witness the luminous beauty of the celestial constellations.
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£55.00 |
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Brass Praxinoscope
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Brass Praxinoscope including 10 color & 10 black & white picture strips.
These smoothly turning Praxinoscopes have a wooden base and Brass drum with a wooden top.
All picture strips are reproductions of vintage samples. Depending on the correct relation of the amount of mirrors and the quantity of images, some strips works better than others.
This size of Praxinoscope is ideal to produce your own picture strips, strictly following the basic rules of mirror / images relation. The 11 mirrors are... more >>> |
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£72.54 |
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Deluxe Space Mission Assortment
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Deluxe Space Mission Assortment Earth, Lunar, and Martian landscapes represented in striking detail. In the spirit of the moon landing and future Mars exploration, this deluxe package offers the opportunity to change-out from an assortment of artistic levitating spheres. One each chrome-plated levitation base with AC adapter and one each Earth, Mars, and Moon spheres.
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£81.75 |
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Dollond Portable Sundial (large)
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Our wooden-boxed brass sundial is a completely self-contained portable instrument, inspired by a design from the 18th century instrument maker Peter Dollond, founder of a great optical empire. The original is in the London Science Museum. Instruments like this were once used by explorers and navigators to tell the time anywhere in the world. For this to be possible, the gnomon, which casts the shadow, can be set for latitude on a sliding scale and the whole instrument oriented for direction by means of a... more >>> |
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£178.80 £160.93 |
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Starship Earth
| As seen on the TV show Defying Gravity!
This stunning globe is a three dimensional star atlas. The 40cm diameter outer globe displays all eighty eight constellations and more than 1100 naked eye stars, plus many other night sky features.. The 12cm inner Earth globe ball acts as the setting point for an accurate representation of the visible night sky at any time or place on the globe. A simple three stage setting allows you to pinpoint with great accuracy the sky you see. It comes with a full... more >>> |
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£587.50 |
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