Physics A-Level
Doppler shift
What Doppler shift means in Physics A-Level, as defined for AQA.
Definition of Doppler shift
Check what you remember
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Reference: AQA
The change in observed wavelength of the star's spectral lines caused by the star's line-of-sight motion as it orbits the common centre of mass.
Topics that use Doppler shift
- Detection of exoplanets (A-level only) (AQA A-Level)
Related terms
- Angular separation
- Baseline
- Radial velocity method
- Transit depth
- Transit method
- Contrast
- Coronagraphs
- Depth
Using Doppler shift in the exam
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