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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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Mirage Desktop 3D Hologram Maker
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Make a mirage appear - right before your eyes!
Even the camera sees it. But you can't touch it! And neither will anyone
else.
Scientists call these amazing phenomena three-dimensional
real images. Indeed, the illusions you can create are so brilliant,
so alive with color and depth, they defy, yet demand, explanation.
Never has the fine line between reality and perception
been exposed with such startling clarity. Mirage faithfully
reproduces every detail of... more >>> |
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£35.00 |
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Solar Radiometer, long glass stem
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In a vacuum inside a free-standing globe the vanes constantly revolve in sunlight. The simplest possible demonstration of solar power.
The 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. 20.5 cm. (8 in)
Globe diameter: ca. 8cm. (3.25 in)
The Crookes radiometer was invented by the... more >>> |
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£25.50 |
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Solar Radiometer, blue
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This radiometer is made by traditional Thuringian hand-blowing in Germany, of Lauschaer bottle glass - blue-tinted for the globe, clear for the top and foot.
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... more >>> |
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£25.50 |
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3.5" Brass Sundial (Dollond)
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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... more >>> |
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£30.00 |
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StarFinder
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The Easy Way to Identify Stars! Simply compare the stars you can see in the sky through one eye with the annotated and illuminated map you view inside Star Pocket through the other eye. 70 constellations and 1,500 stars demystified. All you have to do beforehand is set the time and date on the rings outside, and align it in the right direction using the built-in compass. Latitude compensation rings and star maps for both hemispheres are included, so you can use it anywhere in the world. 6" long, with... more >>> |
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£28.09 |
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Zero Launcher
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The Zero Launcher launches 2 to 6 inch diameter non-toxic fog rings that sail up to fourteen feet. Easy to use, they are great stress busters and with practice you'll be able to create bigger and better rings.
The Zero Launcher uses the same liquid that Hollywood uses in the movies to make special effects fog. Like a snowflake, each fog ring is unique, expanding at its own rate and traveling at its own speed. You'll be captivated by their beauty, mesmerized by the myriad shapes you'll discover in... more >>> |
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£20.00 £18.00 |
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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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Star Wars Force Trainer
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The Star Wars Force Trainer allows you to control a Jedi Training Remote with your mind. The innovative wireless headset reads and interprets your brainwaves. The deeper your concentration, the greater your ability to move the Jedi Training Remote. Jedi Master Yoda guides you through 15 levels of Force training as you move from Padawan to the highest rank of Jedi Master. The set features Star Wars sound effects and exclusive Yoda dialogue.
Can this be real? Yes! Utilising advanced dry neural sensor... more >>> |
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£102.00 £76.50 |
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