Definition, Meaning & Synonyms
Doppler effect
Noun
/ˈdɒplə ɛˈfɛkt/
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Definition
The Doppler effect is the change in frequency or wavelength of a wave in relation to an observer who is moving relative to the wave source.
![](https://vocabdictionary.com/wp-content/uploads/2024/11/migrate-02.png)
Examples
- As the ambulance passed by, I noticed the change in the pitch of the siren due to the Doppler effect.
- The redshift observed in distant galaxies is an application of the Doppler effect in astronomy.
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Meaning
It refers to how the perceived frequency of sound, light, or other waves changes when the source of the waves is moving towards or away from an observer.
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Synonyms
- Relativistic Doppler effect
- Frequency shift