Illustration of the Doppler effect
Numéro d’image : 13407093
| Illustration of the doppler effect. This describes the change in frequency of a wave for an observer moving relative to its source. The illustration uses the sound of a police car as an example. Compared to the frequency behind the car (left), the frequency ahead of it is higher. This ie because the sound waves in front are compressed while the ones at the back are stretched out. | |
| Licence : | Libre de droits |
| Crédit: | Science Photo Library / Garlick, Mark |
| Model Release : | Non requis |
| Restrictions : | - |
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