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Colour mixing triangle, 1954-1960.

Colour mixing triangle, 1954-1960.
3 7 c m
actual image size: 32cm x 29cm


Colour-mixing triangle made by Griffin & George Ltd, London. Designed for demonstrating the primary colours (red, green & bluish-violet) of white light. It consists of a triangular white base with a tetrahedron at its centre and three filtered lamps at each apex, illuminating each of the primary hues.

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© Science Museum / Science & Society Picture Library

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