15 Year Old Harnesses Human Warmth As A Power Source

Categories: Energy

Fifteen year old Ann Makosinski was  inspired when she was told that humans are “like walking 100-Watt bulbs.”Screen-Shot-2014-02-28-at-1.43.02-PM She decided to harness that bulb in a human-powered flashlight. By combining peltier tiles, a hollow aluminum tube, and a light-emitting diode (LED), the 10th grader was able to create a working flashlight powered by body heat. She got 2nd place in a science fair back home and then went on to win the 2013 Google Science Fair with her invention.

Peltier tiles generate electricity by converting thermal energy as it flows from a heat source to a cold source – that is, energy flowing from hot to cold. For those who haven’t seen Ann’s flashlight in action, check out this video:

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