Homework Help is Here – Start Your Trial Now!
Science
Advanced Physics
The H-alpha line from a star is observed to be 725 nm. Estimate its redshift.

The H-alpha line from a star is observed to be 725 nm. Estimate its redshift.

icon
Related questions
Question
The H-alpha line from a star is observed to be 725 nm. Estimate its redshift.
Transcribed Image Text:The H-alpha line from a star is observed to be 725 nm. Estimate its redshift.
Expert Solution
Concept and Principle:
  • As per De Broglie's hypothesis light can behave both as a wave and particle. Thus light waves can also be affected by the Doppler effect.

 

  • In the case of light or electromagnetic radiation, it is called redshift. 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,

z=λobs−λemitλemit

Here λobs is the observed wavelength and λemit is the emitted wavelength.

steps

Step by step

Solved in 3 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer