Why does a tiny rock sink to the bottom of a lake, while a giant boat can stay afloat? When any object hits water, it displaces some amount of water. To float, the amount of water something displaces ...
Artist Frank Boelter has constructed a 9-metre paper boat from the stuff used to make Tetrabrik packs and is sailing it up the Elbe. The 37-year old artist came up with the idea one breakfast time, ...
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