My friend and I have been toying with this idea for a long time. He is a little dubious about my asking this online as someone could "steal the idea", but I think if it works, it would have been thought of a long time ago.
The idea is for a solar powered light, which shines on the very solar cells that power it. The sun would power it initially, but when the light shines, it could be removed from the sunlight. Provided that the cells always collected enough power to keep the light on, it would run itself until the bulb needed to be changed.
The question is, could this be done, even on a small scale? I'm a little skeptical that the light would provide enough energy to the cells to keep itself on, especially as solar cells are only 30% efficient or something like that.
2007-03-28
17:14:24
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8 answers
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asked by
Odysseus J
3
in
Physics