PDA View Full Version : Dopper effect doomknight04-17-2008, 01:25 PMDoes the velocity of sound change? I know pitch/frequency/wavelength changes. mrmandrake04-17-2008, 02:36 PMDoes the velocity of sound change? I know pitch/frequency/wavelength changes. no, i dont believe the velocity changes in doppler effect calculations unless the sound is transferred to another medium or something iA-MD201304-17-2008, 02:58 PMnope, velocity won't change. doomknight04-17-2008, 02:58 PMok thanks bodonid04-17-2008, 03:53 PMnm, I don't think I understand this well enough to make such generalizations. see below. RSAgator04-17-2008, 04:03 PMvelocity is a property of the medium bodonid04-17-2008, 04:06 PMvelocity is a property of the medium absolute velocity is, yes. But when you walk toward a wave moving at the speed of sound, isn't the observed velocity increased? That is the basis for the Doppler equation, I think. RSAgator04-17-2008, 04:51 PMWell the velocity doesn't change. The fact that the doppler effect is concerned with a relative velocity doesn't change the fact that velocity itself is a property of the medium =) Chanbrandy04-17-2008, 04:52 PMIf I remember correctly, there is a question from aamc8 asking about this. And the answer is velocity does not change. mrmandrake04-17-2008, 05:10 PMabsolute velocity is, yes. But when you walk toward a wave moving at the speed of sound, isn't the observed velocity increased? That is the basis for the Doppler equation, I think. yea, the relative velocity of the sound wave will be changed if you (the detector) are moving too. so if you are moving at 170m/s in the same direction as the wave which moves at 340m/s, it will be moving 170m/s relative to you. this is the doppler effect. bodonid04-17-2008, 05:38 PMWell the velocity doesn't change. The fact that the doppler effect is concerned with a relative velocity doesn't change the fact that velocity itself is a property of the medium =) agreed.