Question
An owl has good night vision because its eyes can detect a light intensity as small as 5.0 10 -13 W/m 2 . What is
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 8.8 mm and the light has a wavelength of 569 nm?
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Understanding Our Universe ()
Authors: Stacy Palen, Laura Kay, George Blumenthal
3rd Edition
0393631761, 9780393631760
