Body heat powered flashlight

This body heat powered flashlight was invented by Canadian 10th grader Ann Makosinski.  Using no batteries, electricity, or cranking, just the difference between her warm hand on metal and the colder air flowing through a hollow plastic tube, the heat energy difference (thermoelectric effect) lights up the LED bulbs.

Ms. Makosinski is a finalist this year in the worldwide Google Science Fair.  Take a look at her simple and practical flashlight design.

Thanks to Gizmag for this article.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s