25.3a Ex1 Find Velocity of Star from Spectral Line | A2 Astronomy Cosmology | CAIE A Level Physics

Published: 05 May 2022
on channel: ETphysics
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A particular spectral line in the spectrum of a star is found to have wavelength of 600.80nm compared to 600.00nm as measured in the laboratory. What is the velocity of the star? Is it moving towards us or away from the Earth?

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