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The photoelectric effect

Structural colour

We perceive colour all around us, and animals use it to attract mates or warn off predators. Mike Follows explains how colour can be produced without chemical pigments

The terms in bold link to topics in the AQA, Edexcel, OCR, WJEC and CCEA A-level specifications, as well as the IB, Pre-U and SQA exam specifications.

Structural colours are produced by superposition and interference when light waves undergo multiple reflection.

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The photoelectric effect

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