Knowing that the index of refraction of air is 1 and the, Ask an Expert

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Knowing that the index of refraction of air is 1 and the index of refraction of water is 1.33, how many degrees will an anchor chain in the water appear to bend if it enters at an angle of 25 degrees from the perpendicular/normal?

Light enters the aperture of your AN/PVS-15 Night Vision Goggles at an incident angle of 32 degrees and refracts at an angle of 20.5 degrees from the perpendicular. What is the index of refraction of your objective lens?

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