Hollow Flashlight Runs on Your Body Heat

Hollow Flashlight Runs on Your Body Heat

Remember that potato clock you made for your high school science fair? Apparently, the bar has been raised quite a bit. Ann Makosinski, a 15 year old student from Canada, made a flashlight for her science fair project – a flashlight powered entirely by the body heat of the hand holding it.

Continue reading at http://ift.tt/10kdZFs

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