Recent content by Patrick McCabe

  1. P

    Sound Doppler shift asymmetry confusion

    Well now as there are two response, Dalespam, yes cs is the speed in the medium, but it does not appear as a variable. In the equation listed the variables above the division line Va and the variable below the division line Ve is what makes it asymmetric. I do not doubt it is asymmetric, I...
  2. P

    Sound Doppler shift asymmetry confusion

    Actually I did read the link, that is why I made the comment. The link opens to Section 2.4. There are two paragraphs then the doppler equation which includes the asymmetry aspect. The question I am asking, and others have asked is where does this asymmetry come from. I know these equations...
  3. P

    Sound Doppler shift asymmetry confusion

    DaleSpam, Thank you for your post, however the question I am asking, and apparently a lot of other people have asked is where does the presumption of asymmetry come from? Your post simply presumes there is an asymmetry, there is no discuss why this is so. It would be logical to presume that...
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    Sound Doppler shift asymmetry confusion

    Actually as I looked for examples on the web for the asymmetry I found that when one considers the medium through which the wave travels the change is because the values for the speed of the wave changed. The question I and apparently so many others have asked is why are the formulas setup as...
  5. P

    Sound Doppler shift asymmetry confusion

    None of the formulas I have found have any reference to the medium. One example is http://www.school-for-champions.com/science/waves_doppler_effect_wavelength_derivations.htm#.VP2-Wo7NrPw In this example I get how the author derives the case of the moving observer. When the author is...
  6. P

    Sound Doppler shift asymmetry confusion

    All I'm doing is looking at the diagrams and the derivations being made for the doppler effect. The medium doesn't even come into these formulas at least not with the sources I have looked at. I may be dense I truly do not see the difference between the two. I still don't see where the...
  7. P

    Sound Doppler shift asymmetry confusion

    I asked this question on a new thread, thankfully someone linked me to this one. I can see that the issue has been addressed, but I do not see an answer. It is postulated what speed would a source have to move to reduce the wavelength to zero, the speed of sound. What speed would an observer...
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