A 525 nm photon emitted by a distant galaxy is observed to be 890 nm. Estimate the redshift of the galaxy.
A 525 nm photon emitted by a distant galaxy is observed to be 890 nm. Estimate the redshift of the galaxy.
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Transcribed Image Text:A 525 nm photon emitted by a distant galaxy is observed to be 890 nm. Estimate the redshift of the galaxy.
Expert Solution

Concept and Principle:
- Redshift takes place when the source of electromagnetic radiation moves away from the observer. This shifts the wavelength to the red side and will decrease the frequency.
- Redshift can be calculated from wavelength using the following formula,
Here λobs is the observed wavelength and λemit is the emitted wavelength.
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