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Question
Diffraction spreading for a flashlight is insignificant compared with other limitations in its optics, such as spherical aberrations in its mirror. To show this, calculate the minimum angular spreading of a flashlight beam that is originally 5.00 cm in diameter with an average wavelength of 600 nm.
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Final Answer
$0.00264^\circ$
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OpenStax College Physics Solution, Chapter 27, Problem 59 (Problems & Exercises) (1:11)

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