Suppose the objective lens of a telescope is made of glass with index of refraction n = 1.6. i) What fraction of the incident power is transmitted through the front surface of the lens? ii) Show that the reflected wave can be eliminated by coating the lens with a layer of 1/4 wavelength thick with an index of refraction equal to sqrt( 1.6).
Suppose the objective lens of a telescope is made of glass with index of refraction n = 1.6. i) What fraction of the incident power is transmitted through the front surface of the lens? ii) Show that the reflected wave can be eliminated by coating the lens with a layer of 1/4 wavelength thick with an index of refraction equal to sqrt( 1.6).
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Suppose the objective lens of a telescope is made of glass with index of refraction n = 1.6. i) What fraction of the incident power is transmitted through the front surface of the lens? ii) Show that the reflected wave can be eliminated by coating the lens with a layer of 1/4 wavelength thick with an index of refraction equal to sqrt( 1.6).
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