Timeline for Does sound waves pick up the speed of its source?
Current License: CC BY-SA 3.0
8 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Feb 16, 2016 at 19:42 | comment | added | Floris | If B is in a hot air balloon... | |
| Feb 16, 2016 at 19:39 | vote | accept | maha | ||
| Feb 16, 2016 at 19:38 | comment | added | maha | I just would disagree with the example; since if B is moving, then we can assume that the medium is moving relative to B. I think I now understand, thanks :) | |
| Feb 16, 2016 at 19:13 | comment | added | Floris | No - the speed of sound is constant relative to the medium. It is not measured relative to the observer, or the source. Although you can measure the time it takes sound to get from A to B, that time doesn't depend on whether A or B is moving - assuming that you know the position of A when the sound is transmitted, and the position of B when it is received. However, you still need to know whether the medium is stationary in the frame in which you determined the position of A and B. | |
| Feb 16, 2016 at 18:12 | comment | added | maha | Well.. I shall check the links you sent me, thanks. But firstly I want to make these two statements: 1. The speed of sound would change if the observer is moving, 2. The speed of sound doesn't change if the source is moving. I kind of find this a little bit confusing :\ | |
| Feb 16, 2016 at 17:55 | comment | added | Floris | Yes, sound does not "pick up the speed of the source". However, if a source of a certain frequency is moving towards you, the frequency you will observe is different than the frequency of the source. In that way, there is an interplay between observed frequency and source velocity - called the Doppler effect. But I don't think that is what you were asking about. See also this earlier answer or this one | |
| Feb 16, 2016 at 17:48 | comment | added | maha | So I was just wrong saying it doesn't pick the speed of the source, right? | |
| Feb 16, 2016 at 17:34 | history | answered | Floris | CC BY-SA 3.0 |