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SPECTRUM: LIGHT REFRACTED BY A PRISM<br />
The various wavelengths of visible light, a small part of the electromagnetic spectrum, are separated because the refractive index of the prism substance varies for the different wavelengths.

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SPECTRUM: LIGHT REFRACTED BY A PRISM
The various wavelengths of visible light, a small part of the electromagnetic spectrum, are separated because the refractive index of the prism substance varies for the different wavelengths.

Copyright:© 1987 Paul Silverman - Fundamental Photographs

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