Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN: 9780190698614
Author: Sadiku, Matthew N. O.
Publisher: Oxford University Press
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Light from an ideal spherical blackbody 15.0 cm in diameter
is analyzed by using a diffraction grating that has 3850 lines/cm.
When you shine this light through the grating, you observe that the
peak-intensity wavelength forms a first-order bright fringe at +-14.4
from the central bright fringe. (a) What is the temperature of the blackbody?
(b) How long will it take this sphere to radiate 12.0 MJ of energy
at constant temperature?

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