4 ms·
A surprising amount of power can be collected from stray radio waves. You wouldn't be able to power a full computer or even a phone, but you can do cool things
by sxp 12y ago
A surprising amount of power can be collected from stray radio waves. You wouldn't be able to power a full computer or even a phone, but you can do cool things like power a radio: http://en.wikipedia.org/wiki/Foxhole_radio http://en.wikipedia.org/wiki/Foxhole_radio
However, indoor "solar" power is a more practical idea: https://developers.google.com/gdata/articles/radish?csw=1 https://developers.google.com/gdata/articles/radish?csw=1
- dctoedt 12y agohttp://en.wikipedia.org/wiki/Crystal_radio http://en.wikipedia.org/wiki/Crystal_radio
- marcosscriven 12y agoI recall as a kid my mind being blown when I realised you could get enough energy out of "thin air" to drive a little earphone, with nothing more than a length of wire, a finished toilet paper tube, and a crystal/diode.