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Why do we use the hydrogen spectrum to identify if a star is red or blue
shifted? *

Sagot :

CoughingBloodidn

Answer:

But if you place a clear container filled with hydrogen gas between the flashlight and the prism, gaps appear in the smooth rainbow of colors, places where the light literally goes missing. The dark absorption lines of a star at rest (left) get shifted towards red if the star is moving away from Earth (right)

Explanation:

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