Interference pattern

Interference pattern

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Credit: DR. JOHN BRACKENBURY/SCIENCE PHOTO LIBRARY

Caption: Interference pattern. Soap film across a rubber band stretched between fingers. The different colours are due to interference of reflected light waves. Some incidental light reflects off the surface of the film, while the rest of the light travels through to he back of the film and is reflected. The thickness of the film varies across its surface, causing certain wavelengths to be extinguished, producing a variation in colour.

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Keywords: colour, coloured, colours, detail, fingers, hand, human, interference pattern, iridescence, iridescent, light, optics, people, person, physical, physics, rubber band, soap film, spectral, spectrum, surface tension, thin film

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