Denis Vrublevski via Shutterstock

Matters of Scale 1 - Extremes of Scale

Wednesday 8th Oct 2014, 11.45am

This podcast is part of the The Big Questions series.

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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