Dark A B Air Oil n = 1.50 no Water nw=1.33

Horizons: Exploring the Universe (MindTap Course List)
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Chapter9: The Formation And Structure Of Stars
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A thin film of oil (no = 1.50) with varying thickness floats on water (nw = 1.33). When it is illuminated from above by white light, the reflected colors are as shown in the figure below. In air, the wavelength of yellow light is 580 nm.

Why are there no reflected colors at point A? What is the oil’s thickness “t” at point B?

Dark
A
B
Air
Oil
n = 1.50
no
Water
nw=1.33
Transcribed Image Text:Dark A B Air Oil n = 1.50 no Water nw=1.33
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