Doppler Effect
Physics: Edexcel IGCSE, topic 3.1.10
The Doppler Effect
The Doppler effect describes the phenomenon of the observed wavelength and frequency of waves changing when the source of the waves is moving with respect to an observer.
Types of waves
- The Doppler effect can be experienced with all types of waves.
- The wavelength and frequency of the waves do not actually change.
Approaching vs receding sources
- When the source of the waves is approaching, the frequency shifts upwards for observers.
- When the source of the waves is receding, the frequency shifts downwards for observers.
Test yourself on Doppler Effect
Which types of waves can be affected by the Doppler effect?