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OCW Scholar - Physics II: Electricity and Magnetism
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OpenStudy (anonymous):
PLEASE HELP!! Under controlled darkened conditions in the laboratory, a light receptor cell on the retina of a person's eye can detect a single photon of light of wavelength 504 nm and having an energy of 3.84×10−19 J. We shall assume that this energy is absorbed by a single cell during one period of the wave. Cells of this kind are called rods and have a diameter of approximately 2.0×10−3 mm. What is the intensity (in W/m^2) delivered to a rod? I=???
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