An emergency ambulance with switched on siren passes a person who is standing at the street.

Note: This applet is not very realistic in one respect: As the Doppler effect should be seen as clearly as possible, the sound waves have a smaller velocity than in reality.

Physics Applets (Overview)

URL: http://home.a-city.de/walter.fendt/phe/dopplereff.htm
© Walter Fendt, February 25, 1998
Last modification: December 1, 2000