A typical incandescent lightbulb emits approximately 3 x 10 18 visible-light photons per second. Your eye, when
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A typical incandescent lightbulb emits approximately 3 x 1018 visible-light photons per second. Your eye, when it is fully dark adapted, can barely see the light from an incandescent lightbulb 10 km away. How many photons per second are incident at the image point on your retina? The diameter of a dark-adapted pupil is 6 mm.
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To find the number of photons per second incident at the image point on your retina we can use the intensity of the light from the incandescent lightb...View the full answer
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Related Book For 
College Physics A Strategic Approach
ISBN: 9780321595492
2nd Edition
Authors: Randall D. Knight, Brian Jones, Stuart Field
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