POPETPOP Solar Powered Crookes Radiometer - Glass Windmill Desk Decor with Vanes, Perpetual Motion Machine for Home & Office | Science Gift, Educational Display, Feng Shui Decor

Features- Color: Transparent- Material: High Borosilicate Glass- Size: 14 X 7. 5 X 7. 5cm/ 5. 5 X 2. 95 X 2. 95inch Package Including 1pc x radiometer

The rotary vane wheel Radiometer sits on a metal tip for low friction and the evacuated glass provides clear visibility.

Solar Power Radiometer Size: 14 X 7. 5 X 7. 5cm/ 5. 5 X 2. 95 X 2. 95inch

Crookes Radiometer is a creative gift, so you can send it to our friends or family. They will love it!

The Crookes radiometer Glass Windmill is suitable for use in physical science classroom instruction.

The Crookes radiometer can demonstrate the conversion of radiation energy to motion energy.