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Re: correct transversal Doppler shift

From Thomas Heger <ttt_heg@web.de>
Newsgroups sci.physics.relativity
Subject Re: correct transversal Doppler shift
Date 2022-08-05 07:08 +0200
Message-ID <jl3mudFlinrU1@mid.individual.net> (permalink)
References (4 earlier) <d9a5f51d-e0ce-409a-a793-804b6aec983cn@googlegroups.com> <jkul6iFoaduU1@mid.individual.net> <tcdbt9$246le$1@dont-email.me> <jl15lhF94g4U1@mid.individual.net> <57322a9c-34d0-4983-989e-f9c94d1b73f8n@googlegroups.com>

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Am 04.08.2022 um 09:05 schrieb Prokaryotic Capase Homolog:
> On Thursday, August 4, 2022 at 1:01:24 AM UTC-5, Thomas Heger wrote:
>
>> The transversal Doppler effect for sound is therefor zero at the point,
>> where the change of distance is momentarily zero. This point is the
>> point, where the observer looks in right angles towards the racetrack.
>
> 1) Let us take a race car "r" traveling at Mach 0.2.
> 2) You, the observer "o", are standing one mile from the road.
No, I'm sitting twenty meters away from the track.

> 3) Sound travels 5 sec from the road to your ears at its closest point.
> 4) As the car crosses your path, you do not hear sound from where
>      the car is NOW, but from where it was about 5 seconds ago "e".

I'm not a bat and cannot see by the ears.
Actually I see light and use my eyes for that purpose.

The delay for the finite speed of light needed to be considered, even if 
very small.

But in this example it is totally irelevant, because the track does not 
move and determins, where the race-car can go.

> 5) The sound that you hear from "e" is Doppler shifted to a higher tone.
>
> -------e--r----------
> ----------|----------
> ----------|----------
> ----------|----------
> ----------|----------
> ----------|----------
> ----------o----------
>
> Let us try two more scenarios:
> 1) You are standing at the center of a circular  track and a race car
>       is driving around you at high speed. Is the sound that you hear
>       Doppler shifted and if so, is it to a higher or lower tone?

I would prefer a linear track.

The tone is higher on the side of the approach und lower on the receding 
side, where the car drives away.

> 2) You are driving a race car around a circular track with a loudspeaker
>       at the center. Is the sound that you hear Doppler shifted and if so,
>       is it to a higher or lower tone?

No, I would always hear the same frequency, because the distance is the 
important part and does not change in this example, if the speeds are 
moderatly low.

At very high velocities this is not the case anymore, because the path 
of the heard wave gets curved.

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Thread

correct transversal Doppler shift Alsor <alsorgzl@gmail.com> - 2022-07-09 04:47 -0700
  Re: correct transversal Doppler shift Thomas Heger <ttt_heg@web.de> - 2022-07-10 09:05 +0200
    Re: correct transversal Doppler shift Thomas Heger <ttt_heg@web.de> - 2022-07-11 09:21 +0200
      Re: correct transversal Doppler shift Thomas Heger <ttt_heg@web.de> - 2022-08-02 08:52 +0200
        Re: correct transversal Doppler shift Prokaryotic Capase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2022-08-02 00:29 -0700
          Re: correct transversal Doppler shift Thomas Heger <ttt_heg@web.de> - 2022-08-03 09:08 +0200
            Re: correct transversal Doppler shift Volney <volney@invalid.invalid> - 2022-08-03 04:33 -0400
              Re: correct transversal Doppler shift Thomas Heger <ttt_heg@web.de> - 2022-08-04 08:01 +0200
                Re: correct transversal Doppler shift Prokaryotic Capase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2022-08-04 00:05 -0700
                Re: correct transversal Doppler shift Maciej Wozniak <maluwozniak@gmail.com> - 2022-08-04 00:11 -0700
                Re: correct transversal Doppler shift Alsor <alsorgzl@gmail.com> - 2022-08-04 07:37 -0700
                Re: correct transversal Doppler shift Prokaryotic Capase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2022-08-04 08:04 -0700
                Re: correct transversal Doppler shift Richard Hachel <r.hachel@tiscali.fr> - 2022-08-04 15:16 +0000
                Re: correct transversal Doppler shift Alsor <alsorgzl@gmail.com> - 2022-08-04 08:21 -0700
                Re: correct transversal Doppler shift Richard Hachel <r.hachel@tiscali.fr> - 2022-08-04 15:27 +0000
                Re: correct transversal Doppler shift Prokaryotic Capase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2022-08-04 08:59 -0700
                Re: correct transversal Doppler shift Alsor <alsorgzl@gmail.com> - 2022-08-04 09:12 -0700
                Re: correct transversal Doppler shift Thomas Heger <ttt_heg@web.de> - 2022-08-05 07:08 +0200
                Re: correct transversal Doppler shift Prokaryotic Capase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2022-08-05 03:29 -0700
                Re: correct transversal Doppler shift Thomas Heger <ttt_heg@web.de> - 2022-08-06 10:35 +0200
                Re: correct transversal Doppler shift Prokaryotic Capase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2022-08-06 02:03 -0700
                Re: correct transversal Doppler shift Maciej Wozniak <maluwozniak@gmail.com> - 2022-08-06 02:26 -0700
                Re: correct transversal Doppler shift Alsor <alsorgzl@gmail.com> - 2022-08-06 06:06 -0700
                Re: correct transversal Doppler shift Thomas Heger <ttt_heg@web.de> - 2022-08-07 07:18 +0200
                Re: correct transversal Doppler shift Alsor <alsorgzl@gmail.com> - 2022-08-07 03:27 -0700
                Re: correct transversal Doppler shift Thomas Heger <ttt_heg@web.de> - 2022-08-08 08:45 +0200
                Re: correct transversal Doppler shift "Ross A. Finlayson" <ross.finlayson@gmail.com> - 2022-08-08 08:51 -0700
                Re: correct transversal Doppler shift Diego Traversa <toed@iavdattg.ev> - 2022-08-08 22:35 +0000
                Re: correct transversal Doppler shift "Ross A. Finlayson" <ross.finlayson@gmail.com> - 2022-08-08 21:01 -0700
                Re: correct transversal Doppler shift Prokaryotic Capase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2022-08-05 03:33 -0700
                Re: correct transversal Doppler shift "Ross A. Finlayson" <ross.finlayson@gmail.com> - 2022-08-05 21:10 -0700
            Re: correct transversal Doppler shift Alsor <alsorgzl@gmail.com> - 2022-08-03 09:59 -0700
            Re: correct transversal Doppler shift Prokaryotic Capase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2022-08-03 10:12 -0700
  Re: correct transversal Doppler shift Alsor <alsorgzl@gmail.com> - 2022-07-10 06:43 -0700
    Re: correct transversal Doppler shift Richard Hachel <r.hachel@tiscali.fr> - 2022-07-10 16:34 +0000
  Re: correct transversal Doppler shift Tom Roberts <tjroberts137@sbcglobal.net> - 2022-07-13 11:02 -0500
    Re: correct transversal Doppler shift Alsor <alsorgzl@gmail.com> - 2022-07-13 09:28 -0700
      Re: correct transversal Doppler shift Alsor <alsorgzl@gmail.com> - 2022-07-13 09:36 -0700
      Re: correct transversal Doppler shift Richard Hachel <r.hachel@tiscali.fr> - 2022-07-13 18:55 +0000
      Re: correct transversal Doppler shift Tom Roberts <tjroberts137@sbcglobal.net> - 2022-07-18 20:55 -0500
        Re: correct transversal Doppler shift Alsor <alsorgzl@gmail.com> - 2022-07-19 08:13 -0700
          Re: correct transversal Doppler shift Tom Roberts <tjroberts137@sbcglobal.net> - 2022-07-20 11:28 -0500
            Re: correct transversal Doppler shift Alsor <alsorgzl@gmail.com> - 2022-07-20 12:03 -0700
            Re: correct transversal Doppler shift Alsor <alsorgzl@gmail.com> - 2022-07-20 13:04 -0700
              Re: correct transversal Doppler shift Tom Roberts <tjroberts137@sbcglobal.net> - 2022-07-21 21:19 -0500
                Re: correct transversal Doppler shift Alsor <alsorgzl@gmail.com> - 2022-07-22 07:28 -0700
                Re: correct transversal Doppler shift Tom Roberts <tjroberts137@sbcglobal.net> - 2022-07-22 12:11 -0500
                Re: correct transversal Doppler shift Richard Hachel <r.hachel@tiscali.fr> - 2022-07-22 17:19 +0000
          Re: correct transversal Doppler shift Richard Hachel <r.hachel@tiscali.fr> - 2022-07-22 22:44 +0000
            Re: correct transversal Doppler shift Alsor <alsorgzl@gmail.com> - 2022-07-23 04:46 -0700
              Re: correct transversal Doppler shift Alsor <alsorgzl@gmail.com> - 2022-07-23 04:59 -0700
                Re: correct transversal Doppler shift Richard Hachel <r.hachel@tiscali.fr> - 2022-07-23 14:34 +0000
              Re: correct transversal Doppler shift Richard Hachel <r.hachel@tiscali.fr> - 2022-07-23 12:20 +0000
      Re: correct transversal Doppler shift Prokaryotic Capase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2022-07-29 21:27 -0700
        Re: correct transversal Doppler shift Prokaryotic Capase Homolog <prokaryotic.caspase.homolog@gmail.com> - 2022-07-29 21:59 -0700
        Re: correct transversal Doppler shift Richard Hachel <r.hachel@tiscali.fr> - 2022-07-30 11:26 +0000
        Re: correct transversal Doppler shift Alsor <alsorgzl@gmail.com> - 2022-07-30 05:34 -0700
    Re: correct transversal Doppler shift Richard Hachel <r.hachel@tiscali.fr> - 2022-07-13 18:51 +0000
      Re: correct transversal Doppler shift Tom Roberts <tjroberts137@sbcglobal.net> - 2022-07-20 12:12 -0500
  Re: correct transversal Doppler shift "mitchr...@gmail.com" <mitchrae3323@gmail.com> - 2022-08-04 16:06 -0700
    Re: correct transversal Doppler shift Duan Bonomo <ddfs@dtszpmat.zy> - 2022-08-06 16:15 +0000
      Re: correct transversal Doppler shift Alsor <alsorgzl@gmail.com> - 2022-08-06 11:25 -0700
        Re: correct transversal Doppler shift Thomas Heger <ttt_heg@web.de> - 2022-08-07 07:25 +0200
  Re: correct transversal Doppler shift "erkd...@gmail.com" <erkdemon@gmail.com> - 2022-08-06 22:11 -0700

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