Crookes Radiometer Glass Light Mill for Study Decoration or Science Proving, Great Festive Gift！

This piece of art is amazing. Check out Theoria Apophasis 140 Year Old Secret Of Light to understand how the ultraviolet light activates motion, like when Space craft refuel from the Sun. Laser Induced Plasma Channel (death star refueling perches) are in the ultraviolet range and he explains why.

I was pleasantly suprised when it arrived after 3.5 weeks (from China). It was packed very well and arrived in perfect condition. The radiometer is quite sensitive and will even work on cloudy days! This will be a good science project for my teenage daughter as well as a fun device to casually observe on the windowsill.

This is a beautiful device and it works perfectly even in low light. I liked it so much that I bought a second one for my son.