Canadian teen’s battery-free ‘hollow flashlight’ could bring light to developing world.. Grea

Of course you would have to be warm at night to be able to use it. The hands are the first part of the body to get cold on a cold night.

In theory it seems a good idea but maybe not practical at all in some places.

pretty cool idea...

the light doesn't seem very bright..additionally, i dislike how uppity she is, and i also dislike the way she says the words "tile" and "volt"

that is all.

reply to post by 727Sky


When cars gets so hot you can cook an egg on the roof...could that be an application to generate electricity?

reply to post by StopThaZionistWorldOrder


You'd need a heat dump to get a temperature differential across the module. It would have to be shaded, with fans. Even then it won't be much. You can do better with quantum thermionic modules but it's still a low quality heat source. If you've got that much sunlight you'd be better off with solar cells.