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Antireflection coatings can be used on the inner surfaces of eyeglasses - Cloud Essays

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Antireflection coatings can be used on the inner surfaces of eyeglasses

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Antireflection coatings can be used on the inner surfaces of eyeglasses to reduce the reflection of stray light into the eye, thus reducing eyestrain.

a.)A 89 nm thick coating is applied to the lens. What must be the coating’s index of refraction to be most effective at 461 nm? Assume that the coating’s index of refraction is less than that of the lens.
b.)If the index of refraction of the coating is 1.39, what thickness should the coating be so as to be most effective at 461 nm? The thinnest possible coating is best.
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Antireflection coatings can be used on the inner surfaces of eyeglasses to reduce the reflection of stray light into the eye, thus reducing eyestrain.

a.)A 89 nm thick coating is applied to the lens. What must be the coating’s index of refraction to be most effective at 461 nm? Assume that the coating’s index of refraction is less than that of the lens.
b.)If the index of refraction of the coating is 1.39, what thickness should the coating be so as to be most effective at 461 nm? The thinnest possible coating is best.

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