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Question
Is the sun red shifted or blue shifted?
Is the sun red shifted or blue shifted?
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Solution
Explanation:
- The displacement of the red lines in the spectrum of the Sun caused by its gravitational field is known as gravitational redshift.
- According to Einstein, the Sun's theoretical redshift should be about two millionths of a wavelength.
Hence, the sun is red-shifted.
Explanation:
- The displacement of the red lines in the spectrum of the Sun caused by its gravitational field is known as gravitational redshift.
- According to Einstein, the Sun's theoretical redshift should be about two millionths of a wavelength.
Hence, the sun is red-shifted.
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line
emitted by hydrogen in a star is found to be red shifted by 15 Å.
Estimate the speed with which the star is receding from the Earth.