The observed frequency of radio waves from a distant galaxy is 5 GHz. At the location of the galaxy, the frequency is 6 GHz. Calculate the redshift of the galaxy.
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- When the source of electromagnetic radiation moves away from the observer the frequency will decrease. This will shift the observed wavelength to the red side of the spectrum and is called redshift.
- Redshift can be calculated from frequency using the following formula,
Here fobs is the observed frequency and femit is the emitted frequency.
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