Sunday, March 9, 2014

Astronomy Cast Ep. 336: Units of Measure

How heavy is a kilogram, how long is a second? How warm is a degree? We measure our Universe in so many different ways, using different units of measurement. But how do scientists come up with measurement tools which are purely objective? This show is made possible through your donations.

Images by Isabelle Grosjean, Aldaron and Toby Hudson.

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