A large cavity that has a very small hole and is maintained at a temperature T is a good approximation to an ideal radiator or blackbody. Radiation can pass into or out of the cavity only through the hole. The cavity is a perfect absorber, since any radiation incident on the hole becomes trapped inside the cavity. Such a cavity at 400 oC has a hole with area 6.00 mm2. How long does it take for the cavity to radiate 300 J of energy through the hole?

A large cavity that has a very small hole and is maintained at a temperature T is a good approximation to an ideal radiator or blackbody. Radiation can pass into or out of the cavity only through the hole. The cavity is a perfect absorber, since any radiation incident on the hole becomes trapped inside the cavity. Such a cavity at 400 oC has a hole with area 6.00 mm2. How long does it take for the cavity to radiate 300 J of energy through the hole?

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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Concept explainers

Wien's displacement law

Students often get confused between Wien's displacement law and Planck's radiation law. Although both are historically related, yet they are conceptually different. Planck's law helps determine the spectrum of a blackbody, while Wien's law determines the relationship between peak wavelength and temperature.

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A large cavity that has a very small hole and is maintained at a temperature T is a good approximation to an ideal
radiator or blackbody. Radiation can pass into or out of the cavity only through the hole. The cavity is a perfect
absorber, since any radiation incident on the hole becomes trapped inside the cavity. Such a cavity at 400 •C has a
hole with area 6.00 mm2.
How long does it take for the cavity to radiate 300 J of energy through the hole?

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