Owls have large, sensitive eyes for good night vision. Typically, the pupil of an owl's eye can
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Owls have large, sensitive eyes for good night vision. Typically, the pupil of an owl's eye can have a diameter of 8.5 mm (as compared with a maximum diameter of about 7.0 mm for humans). In addition, an owl's eye is about 100 times more sensitive to light of low intensity than a human eye, allowing owls to detect light with an intensity as small as 5.0 × 10-13 W / m2. Find the minimum number of photons per second an owl can detect, assuming a frequency of 7.0 × 1014 Hz for the light.
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The large pupil in an owls eye allows for more photons per second to enter ...View the full answer
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