Copernicus – Radiometer
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.
- 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