Ann Makosinski developed a flashlight that is powered by your body heat, using peltier tiles' thermoelectric effect. When you put your hand on the flashlight, your electrons flow through the tile and accumulate in an area, heating up. Your end becomes positively charged as a result of the negative energy accumulation, and electrons conduct.
There is a direct relationship between temperature and electricity, we are now tapping into it.
Her flashlight "only needs a five degree temperature difference to work and produce up to 5.4 mW at 5 foot candles of brightness," says Makosinski.
We are referred to as "100 watt walking light bulbs" that can charge laptops, cell phones, and pretty much everything else with our body heat.
Her team is working to create a more efficient circuit to make the light brighter.
Image Credit: http://inhabitat.com/15-year-old-develops-hollow-flashlight-powered-by-body-heat/
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