A proposed star wars antimissile laser is to focus - wavelength infrared light to a
Chapter 32, Problem 57(choose chapter or problem)
A proposed star wars antimissile laser is to focus - wavelength infrared light to a 50-cm-diameter spot on a missile 2500 km distant. Find the minimum diameter for a concave mirror that can achieve this spot size, given the diffraction limit. (Your answer suggests one of many technical difficulties faced by antimissile defense systems.)
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