A
flashlight powered by your body temperature would be really useful for
power outages or camping. Ann Makosinski, a 15-year-old student from
Victoria, British Columbia, developed
a flashlight that does just that.
In
her research, Ann learned about Peltier tiles. Peltier devices —
devices that produce electricity when one side of the tile is heated
while the other side is cooled. What better way to generate power? And
what better outlet for Ann's device than a flashlight?
After
reworking the voltage and circuitry, Ann was able to create a light
powered only by her own body heat. Next, she figured out how to use her
idea to power a flashlight. Using a simple flashlight, the STEM-savvy
teen cut away the plastic exterior so that the flashlight user's hand
would come in direct contact with the built-in Peltier tiles. And just
like that — she had light!
Makosinski took her project to the
Google Science Fair, and was the winner in the 15-16-old division.
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