Radiation at 21 cm pours down on the Earth from outer space. Its origin is great clouds
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Radiation at 21 cm pours down on the Earth from outer space. Its origin is great clouds of hydrogen gas. Taking the background temperature of space to be 3.0 K, determine the ratio of the transition rates of stimulated emission to spontaneous emission and discuss the result.
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and the ratio 1expEK B T 1 46 B E k T so s...View the full answer
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