What Causes the 21-Cm Radiation,and What Is It Useful for Detecting

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The Answer is When neutral hydrogen switches from a higher energy configuration of both the proton and the electron spinning in the same direction to a lower energy configuration with the proton and the electron spinning in opposite directions,a photon is emitted with a wavelength of 21-cm.This allows us to use this spectral line in the radio region to map clouds of H I,or neutral hydrogen.

What Causes the 21-Cm Radiation,and What Is It Useful for Detecting

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What Causes the 21-Cm Radiation,and What Is It Useful for Detecting

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