Feature: Interference

A variation in intensity of color occurs when two light waves are superimposed. Thin-film interference occurs within a thin film when light waves are reflected by the lower and upper boundaries of the film.

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$IRIDESCENCE: PEACOCK FEATHERS (Variations Available) Natural Transmission Diffraction Grating Spectral iridescence caused by a natural transmission diffraction grating composed of regularly spaced melanin rods.$

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$DISTRIBUTION OF STRESS SHOWN BY PHOTOELASTICITY (Variations Available) In a Strained Transparent Object Viewed through crossed polarizing filters, it shows various colored regions due to induced double refraction. The greatest stress occurs where there are the most color changes.$

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