FANDOM


The Doppler effect is the change in frequency of a wave for an observer moving to its source, an example of this phenomenon is when a police car's siren has a high pitch when you first observe it but then the pitch lowers as it moves away from you.

Ad blocker interference detected!


Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.