30 June 2013

A Sustainable Flashlight Powered By Body Heat

[Click here to view the video in this article]

Ann Makosinski, a 15-year-old girl from Victoria, British Columbia has created a sustainable flashlight that can be powered by the body heat of a person’s hand.

Created for a Google Science Fair, ‘The Hollow’ was made with LED lights, circuits and Peltier tiles, which are capable of producing electricity when “one side of the tile is heated while the other side is cool”.

She also designed a PVC pipe handle that is “cut away in a certain area” so that the holder’s hand would come into contact with the tiles.

According to ExtremeTech, it reported that the flashlight worked, but the flashlight “worked better in colder temperatures (tested at 41 degrees Fahrenheit)” as compared to warmer temperatures.

“…the colder the surrounding temperature, the more the hand’s body heat can help the Peltier generate electricity.”

Altogether, Makosinski spent about US$26 to build ‘The Hollow’, which is able to produce enough light for over 20 minutes.

Watch the video below to find out more:

[via ExtremeTech]