August 2008
Intermediate to advanced
192 pages
8h 8m
English

Photograph by Steve Double
With no moving parts, this simple energy-recycling generator scavenges waste heat from a candle and turns it into usable electricity.
Peltier cells are flat devices that draw heat from one side to the other through a thermoelectric principle called the Peltier effect. The cells are commonly used to pump heat away from CPUs or graphics cards, and are also found in camping coolers and heaters. The Amazing Seebeck Generator uses one of these devices in reverse, to turn a heat differential into electricity, rather than using electricity to produce a heat differential. ...
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