Scientists Build Scales That Can Weigh a Single Proton [Science]

How do you weigh an atom? To be honest, that's a question with plenty of problems which need answering, but one thing's certain: you need some accurate scales. Now, scientists have made a set that can measure the smallest unit of mass, the yoctogram—which is less than the mass of a single proton. More »

Source: http://feeds.gawker.com/~r/gizmodo/full/~3/koH6ao8Kv3M/scientists-build-scales-that-can-weigh-a-single-proton

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