Physics, 04.12.2019 00:31 ellllaaaxx

If you could shine a very powerful flashlight beam toward the moon, estimate the diameter of the beam when it reaches the moon. assume that the beam leaves the flashlight through a 7.0-cm aperture, that its white light has an average wavelength of 550nm, and that the beam spreads due to diffraction only. the distance from the earth to the moon is 384x10^3km.

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If you could shine a very powerful flashlight beam toward the moon, estimate the diameter of the bea...