How to Build a Compass Out of Lego—Without Using Any Magnets [Video]

A compass that doesn't need a magnetic needle? That might sound impossible, but the ancient Chinese worked out how to make one 4500 years ago. Now you can make one too—from Lego bricks. More »

Source: http://feeds.gawker.com/~r/gizmodo/full/~3/KGQG-5eVAVI/how-to-build-a-compass-out-of-lego++without-using-any-magnets

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