• Crookes Radiometer

Crookes Radiometer

EDU094

Vendor: OMSONS

Low stock! Only 2 left
R 250.00
R 250.00
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P
Pete Embke

Really happy with the Crookes Radiometer. It’s a fascinating little piece that works exactly as expected and looks great on display. A fun and interesting addition to my collection. Great service from SmartLabs too!

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Crookes Radiometer

The Crookes radiometer, also known as a light mill, is an airtight glass bulb containing a partial vacuum, with a set of vanes mounted on a spindle inside. Today it is mainly used in physics education to demonstrate a heat engine run by light energy.

This one is mounted on a sturdy moulded plastic base. The evacuated glass bulb is 70mm in diameter at its widest point, and a fine pivot supports four lightweight metal arms. Each vane has a blackened side and a bright reverse side.

The reason for the rotation was much debated in the ten years after the device was invented. The currently accepted explanation was published in 1879.