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(diagram: wikipedia)
Doppler effect
Essentially, it’s how the frequency of a wave, such as sound or light, changes depending on whether the source of the wave is moving toward or away from the observer.
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BSL Sign Languages
of Doppler effect (light)
(BSL Version)
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BSL Sign Languages
of Doppler effect (light)
(BSL Version – Glossary of Astronomy)
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BSL Sign Languages
of Doppler effect (sound)
(BSL Version)
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BSL Explanation
of Doppler effect (sound)
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BSL Sign Languages
of Doppler effect (wavelength)
(BSL Version)
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BSL Explanation
of Doppler effect (wavelength)
(BSL Version – Glossary of Astronomy)
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Glossary of Astronomy – Doppler effect (light / sound / wavelength)
- named after C. J. Doppler, the apparent change in wavelength of sound or light caused by the motion of the source, observer, or both.
- light waves emitted by a moving object as received by an observer will be blue-shifted (compressed) if approaching, redshifted (elongated) if receding.
- a similar effect occurs with sound waves.
- how much the frequency changes depends on how fast the object is moving toward or away from the receiver.
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- dark adaptation
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