Consider that the photons from the light bulb propagate symmetrically in all directions. That is, the distance at which you see the light will be the radius of the sphere of propagation of this light. To find the number of photons entering the pupils, find the ratio of the area of the pupil and the surface area of a sphere with the lightbulb at the center, and multiply it by the photon emission rate. -To solve the problem recall the formula for the surface area of a sphere and calculate it for the sphere with a radius 17 mm. -To solve the problem you need to find the ratio A� between the area of a circle with a diameter 5.0 mmmm and the surface area of a sphere with radius 17 mm
Consider that the photons from the light bulb propagate symmetrically in all directions. That is, the distance at which you see the light will be the radius of the sphere of propagation of this light. To find the number of photons entering the pupils, find the ratio of the area of the pupil and the surface area of a sphere with the lightbulb at the center, and multiply it by the photon emission rate. -To solve the problem recall the formula for the surface area of a sphere and calculate it for the sphere with a radius 17 mm. -To solve the problem you need to find the ratio A� between the area of a circle with a diameter 5.0 mmmm and the surface area of a sphere with radius 17 mm
Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter28: Quantum Physics
Section: Chapter Questions
Problem 10P
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Consider that the photons from the light bulb propagate symmetrically in all directions. That is, the distance at which you see the light will be the radius of the sphere of propagation of this light. To find the number of photons entering the pupils, find the ratio of the area of the pupil and the surface area of a sphere with the lightbulb at the center, and multiply it by the photon emission rate.
-To solve the problem recall the formula for the surface area of a sphere and calculate it for the sphere with a radius 17 mm.
-To solve the problem you need to find the ratio A� between the area of a circle with a diameter 5.0 mmmm and the surface area of a sphere with radius 17 mm
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