Physics, 21.06.2019 21:00 jjxt126

A150 w lamp emits light of wavelength 590 nm uniformly in all directions. what is the photon flux (photons per unit area per unit time) on a small screen at a distance 2.3 m from the lamp? assume the photons are uniformly distributed over the surface of a sphere of radius 2.3 m.

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A150 w lamp emits light of wavelength 590 nm uniformly in all directions. what is the photon flux (p...

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