Doppler effect - listener in motion

The source of sound (red) is stationary. First, the listener (green) is stationary, then he moves toward the source, finally he moves away from the source. For other physics animations like this one, please visit http://web.ncf.ca/ch865

La source sonore (en rouge) est stationnaire. L'observateur (en vert) est d'abord stationnaire. Il se déplace ensuite vers la source, puis s'en éloigne. Pour d'autres animations de physique de ce genre, veuillez visiter http://web.ncf.ca/ch865

Category:

Education

Tags:

• physics
• acoustics
• doppler
• effect
• frequency
• science
• sound
• wave

[woogr]

An example could be a police siren, when it is far away you can slightly hear it because not that many sound waves are reaching you but the closer it gets the more waves there are reaching you thus making the noise louder then when the police car goes further away and carries on going and less sound waves reach you this causes the sound to decrease thus the Doppler Effect xD please correct me if im wrong im 16... xD

[PelletierPhysics]

@woogr Doppler effect does not cause the sound to become louder of softer. It makes the pitch higher or lower.

[Thanatos659]

thumbs up if you came here from Big Bang Theory

[Brax115]

As you are moving at the sound source, the sound is a higher frequency because sound waves are hitting you more frequently, while when you are moving away from the sound source after you pass, the sound is a lower frequency because the sound waves hit you less frequently since you are moving with them rather than against them.

[rodswebdesign]

some really good stuff here

[DevaXfish]

nice!!!! for share

[DennisBayazitov]

NEEEEEEEEAUUUUUUUUUUUUHHH

[lamdavld]

@PelletierPhysics However, you're brain perceives certain frequencies to be louder or softer. Though you are technically correct.

[frompdiggity]

Note to self.....do not view video while under the influence of psychedelic hallucinogens.

[TrojanJerichoVI]

... there there.

[raizentoushi]

is the green one moving or the other( in this video not in reality)...btw....is anyone else here because of Sheldon?

[PumpManufacturers]

thanks

[imdbstar]

how can anyone dislike this. n00bs

this is the really cool