An owl has good night vision because its eyes can detect a light intensity as small as
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An owl has good night vision because its eyes can detect a light intensity as small as 5.0 × 10-13 W/m2. What is the minimum number of photons per second that an owl eye can detect if its pupil has a diameter of 8.5 mm and the light has a wavelength of 510 nm?
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The number of photons per second N entering the owls eye is N SA E where S is the intensit...View the full answer
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