15-year-old girl invents flashlight powered by the heat of your hand

Re:15-year-old girl invents flashlight powered by the heat o... by twodayslate on Saturday June 29, 2013 @04:22PM (#5963644)

Put this in phones to charge them when you aren't using it?

[ Parent | on HN ]

Re:15-year-old girl invents flashlight powered by the heat o... by jff on Saturday June 29, 2013 @08:29PM (#5964229)

Won't work very long, it operates using the temperature differential between your hand and the interior of the flashlight. Which, based on the quoted "still worked at 50 degrees F", means you'd have to stick your phone in the fridge when you're not using it. And then take it out so it can charge just a little bit before the temperature equalizes.

[ Parent | on HN ]

Re:15-year-old girl invents flashlight powered by the heat o... by bentcorner on Sunday June 30, 2013 @11:46AM (#5966137)

Alternative, could you use this to capture waste heat from the phone internals?

[ Parent | on HN ]