When white light shines downward on a thin, horizontal layer of oil, light waves reflected from the upper and lower surfaces of the film of oil interfere, producing vibrant colors. The color that you see reflected from a certain spot on the film depends on (i) the film thickness at that spot; (ii) the index of refraction of the oil; (iii) the index of refraction of the material below the oil; (iv) both (i) and (ii); (v) all of (i), (ii), and (iii).
When white light shines downward on a thin, horizontal layer of oil, light waves reflected from the upper and lower surfaces of the film of oil interfere, producing vibrant colors. The color that you see reflected from a certain spot on the film depends on (i) the film thickness at that spot; (ii) the index of refraction of the oil; (iii) the index of refraction of the material below the oil; (iv) both (i) and (ii); (v) all of (i), (ii), and (iii).
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When white light shines downward on a
thin, horizontal layer of oil, light waves
reflected from the upper and lower surfaces
of the film of oil interfere, producing vibrant
colors. The color that you see reflected from
a certain spot on the film depends on (i) the
film thickness at that spot; (ii) the index of
refraction of the oil; (iii) the index of refraction
of the material below the oil; (iv) both
(i) and (ii); (v) all of (i), (ii), and (iii).
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