Astronomy Cast Ep. 336: Units of Measure

(Before It's News)

How heavy is a kilogram, how long is a second? How warm is a degree? We measure our Universe is so many different ways, using different units of measurement. But how do scientists come up with measurement tools which are purely objective?
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Read the rest of Astronomy Cast Ep. 336: Units of Measure (46 words)

© Fraser for Universe Today, 2014. |
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