Disney Toy Story Analog Watch With Black Leather Strap #41635

• Precision Crafted Quartz Movement
• Stainless Steel Back Cover
• Leather Like Band
• Glass Crystal

Brand new

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Copernicus – Radiometer

• Light spin this radiometer’s veins
• The stronger the light the faster they spin
• Vacuum sealed globe on a durable plastic base
• Comes boxed with informational pamphlet
• Explore light and physics

Radiometer Another oldie but goodie. 5″ high evacuated clear glass stand 3″ in diameter at the top. A four bladed vane is balanced on a needle inside the sphere. Because opposite surfaces of the vanes are black and white, incident radiant energy is absorbed or reflected to a different degree. The result is a spinning vane. The brighter the light, the faster it spins. Simple, but compelling. Brief explanatory instruction sheet included.

List Price: $ 15.99

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