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What is light?

The answer depends on your perspective.

3 experiments with light

Professor Philippe Smet of Ghent University (Faculty of Science, Department of Solid-State Sciences) shows how to trap light yourself, why the sky is blue and how to build a spectroscope.

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What is Light? The answer depends on your perspective

A simple question, but one with a not so simple answer. Or, to be precise, no single answer. To a physicist, light has a very different meaning to, say, a philosopher. Three scientists shine their own light on light.

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