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28. * BIO Human vision sensitivity To see an object with the unaided eye, the light intensity coming to the eye must be about 5 × 10-12 V/m² s or greater. Determine the minimum • number of photons that must enter the eye's pupil each second in order for an object to be seen. Assume that the pupil's radius is 0.20 cm and the wavelength of the light is 550 nm.

28. * BIO Human vision sensitivity To see an object with the unaided eye, the light intensity coming to the eye must be about 5 × 10-12 V/m² s or greater. Determine the minimum • number of photons that must enter the eye's pupil each second in order for an object to be seen. Assume that the pupil's radius is 0.20 cm and the wavelength of the light is 550 nm.

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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28. * BIO Human vision sensitivity To see an object with the unaided eye, the light intensity coming to the eye must be about 5 × 10-12 V/m² s or greater. Determine the minimum • number of photons that must enter the eye's pupil each second in order for an object to be seen. Assume that the pupil's radius is 0.20 cm and the wavelength of the light is 550 nm.
Transcribed Image Text:28. * BIO Human vision sensitivity To see an object with the unaided eye, the light intensity coming to the eye must be about 5 × 10-12 V/m² s or greater. Determine the minimum • number of photons that must enter the eye's pupil each second in order for an object to be seen. Assume that the pupil's radius is 0.20 cm and the wavelength of the light is 550 nm.
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