The Citrus Clock

By: Sandra Winn - Published: Nov 30, 2008 • References: & engadget
Love science? Looking for a natural, eco-friendly and semi-old way to tell time?  If so, you'll love The Citrus Clock by Anna Gram, a normal childhood science project fashioned into home decor.

The Citrus Clock works the same as powering a clock with a potato. The natural acids substitute the need for a battery when they come in contact with metals like zinc and copper, which creates an electric current.

If you'd like to make your own citrus-powered clock, instead of buying one from someone else, the cost to do so is minimal. Different websites may alter their directions a bit, but the basics are aluminum foil, metal clips, copper wire, and an inexpensive LED battery-powered clock. 

Come to think of it, with Christmas vacation just around the corner, you may find making a lemon-powered clock on your own to be a fun, hands-on science experiment to do with your children. Unless you got really creative, however, with aluminum and copper wires all over the place, it would look more like a science project than a present. Stats for Science Project Time-Keepers Trending: Older & Mild
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Comparison Set: 10 similar articles, including: steampunk clocks, rubik's cube alarm clock, and living flower clocks- the garden alarm.