Thoughtful Gifts for Curious People
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The Solar Radiometer transforms light energy into mechanical energy. In a glass bulb under partial vacuum, on a low-friction needle point, are a set of black and white metal vanes. Visible or infrared light causes a small difference in heat on each side of the vanes, which interact with the small amount of air in the bulb to cause a tiny difference in pressure on either side of the vanes, causing the rotor to spin. The effect is consistent enough that this can be used as a true measure of the amount of light radiation.
Made from: beech wood, glass and steel.
Measurements: 10.8cm x 8.3cm.
Collections: All Products , Fun Stuff , Gadgets , Love you to the moon and back... , Physics , Science