Calculate the redshift of a star if H-ß line of hydrogen from the star is observed to be 800 nm.
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- Redshift happens when the source is moving away from the observer. This will make the observed wavelength longer than the actual one. Since longer wavelength corresponds to red regions we call it redshift.
- Redshift from wavelength is calculated using the following formula,
Here λobs is the observed wavelength and λemit is the emitted wavelength.
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