624 Views - Click for Larger Image 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. We know, the last thing you want to hear of right now is more food, but we just couldn't resist. Anna Gram's artsy Citrus Clock combines the magic of stellar design with basic science in order to create a timepiece that's powered by lemons (or the citrus fruit of your choosing, presumably). Reportedly, a single juicy lemon will keep the seconds ticking for a fortnight (or two weeks, if you've got an inexplicable problem with said synonym), which ain't half bad if we should say so ourselves (engadget) Source: annagram.fr   Via: engadget

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