Crooke’s Radiometer


A radiometer is a measuring device that uses the radiant flux (power) of electromagnetic radiation. It is an infrared radiation detector or an ultraviolet detector.

13 in stock


A fun, vivid way to demonstrate heat transfer! The wings in the radiometer are alternately dark and light. When the light strikes the wings, it transfers heat to each one, but not at the same degree. The light wings reflect the ray and the dark wings absorb the rays. As the light gets brighter it creates more heat and spins the wings faster.

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