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"Matters of Scale" Part 1 - Extremes of Scale

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Duration: 0:08:19 | Added: 08 Oct 2014
Professors Pedro Ferreira and Alan Barr explain what scale means to them, from particle physics to the visible universe. At the subatomic level, gravity has a surprisingly large effect and particles are so small that they have no size.

But at the level of the universe, the speed of light is the only sensible measurement.

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Big Questions - with Oxford Sparks
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