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Wave dispersion theory verses doppler effect?

2006-08-19 09:42:36 · 4 answers · asked by goring 6 in Science & Mathematics Physics

What happens with wave dispersions?What are the theories?

2006-08-19 10:13:40 · update #1

4 answers

When a pebble is thrown into a pond, the resulting wave disperses in all directions on the surface of the pond, and the amplitude of the wave decreases as the wave travels further away from the point of impact. The frequency or wavelength does NOT change.

Also, there is NO doppler effect here, because the water waves on the surface of the pond are not traveling. The water molecules are merely moving up and down as the wave disperses through.

2006-08-19 11:42:50 · answer #1 · answered by PhysicsDude 7 · 0 0

For a given stone, impact velocity and projected area, you could not change the frequency; there's no way to control that. You get a predictable wave...that's pretty.
The Doppler effect defines the change in frequency based on an objects relative velocity to an observer; I don't see how a stone in a pond could be a relevant problem for the Doppler Effect.

2006-08-19 09:52:36 · answer #2 · answered by n0witrytobeamused 6 · 1 0

The frequency would be changeable with respect to some object moving in the pond.

Image a little toy boat sailing toward where the rock struck. First it would run into the waves coming toward it (high freq), then into the waves moving away from it.

So the "response" depends on your frame of motion relative to the "plop".

2006-08-19 22:00:32 · answer #3 · answered by Luis 4 · 0 0

good question. i imagine i'd favor to be the incorrect diamond. a minimum of i became striving to be the great i could probably be even with if i did not really make it. a suitable pebble is purely really above ordinary.

2016-11-30 20:14:13 · answer #4 · answered by ? 3 · 0 0

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