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Answer to Question #85 in Quantum Mechanics for Laura

Question #85
Compare the pressure of light produced by a perfectly white and perfectly black surface in in equal conditions.
Expert's answer
Pressure is directly proportional to the momentum transfer, in case of absolutely elastic reflection (white body) two times greater momentum is passed than in case of absolutely no elastic (black body) reflection, that is why the pressure of light on the white body is twice as strong.

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