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Physicists are currently hotly debating a topic some of us never think about -- or if we did -- surely we'd think 'there's an answer for that, even if I don't know what it is.' The question? The question at hand is 'how heavy is a kilogram?' The currently accepted answer is the mass of a cylinder o

4 years ago 0 Comments
June 6, 2010 at 7:59PM