Re: Problem with Dipole Radiation and Relativity

From	Fabian Russell <root@localhost.localdomain>
Newsgroups	sci.physics, sci.physics.relativity
Subject	Re: Problem with Dipole Radiation and Relativity
Date	2015-09-22 05:28 +0000
Organization	NewsGuy - Unlimited Usenet $23.95
Message-ID	<pan.2015.09.22.05.28.31@localhost.localdomain> (permalink)
References	<pan.2015.09.21.18.05.41@localhost.localdomain> <zPqdnY8QgbtjQ53LnZ2dnUU7_8ydnZ2d@giganews.com>

Cross-posted to 2 groups.

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On Mon, 21 Sep 2015 23:54:20 -0500, Tom Roberts wrote:

> 
> Bottom line: if you want to know what the radiation pattern looks like to a 
> moving observer, you must COMPUTE it. The plots you reference are WOEFULLY 
> INADEQUATE.
> 
> 	(If the plots came from a good textbook, and they did compute it,
> 	then the textbook will have given A LOT more description of the
> 	physical situation being displayed, along with caveats and
> 	conditions for the calculation.)
> 

A reference that provides derivations of the relativistic dipole transforms
is here (see page 14):

http://ocw.mit.edu/courses/nuclear-engineering/22-105-electromagnetic-interactions-fall-2005/readings/chap4.pdf

There is little information available specifically on dipole radiation and
relativity.  Most of the material I've found refers to synchrotron radiation,
but a discussion of this often includes dipoles.  For example, this reference
on page 6 derives the relativistic transformations but the result gives
only a distorted resonant dipole:

http://physics.usask.ca/~hirose/p812/notes/Ch8.pdf

Thread

Problem with Dipole Radiation and Relativity Fabian Russell <root@localhost.localdomain> - 2015-09-21 18:05 +0000
  Re: Problem with Dipole Radiation and Relativity Fabian Russell <root@localhost.localdomain> - 2015-09-22 03:04 +0000
  Re: Problem with Dipole Radiation and Relativity Fabian Russell <root@localhost.localdomain> - 2015-09-22 04:42 +0000
  Re: Problem with Dipole Radiation and Relativity Tom Roberts <tjroberts137@sbcglobal.net> - 2015-09-21 23:54 -0500
    Re: Problem with Dipole Radiation and Relativity Fabian Russell <root@localhost.localdomain> - 2015-09-22 05:28 +0000
  Re: Problem with Dipole Radiation and Relativity Fabian Russell <root@localhost.localdomain> - 2015-09-22 05:02 +0000
  Re: Problem with Dipole Radiation and Relativity "Paul B. Andersen" <relativity@paulba.no> - 2015-09-28 12:24 +0200
    Re: Problem with Dipole Radiation and Relativity HGW <xxx@....> - 2015-09-29 07:47 +1000
      Re: Problem with Dipole Radiation and Relativity Tom Roberts <tjroberts137@sbcglobal.net> - 2015-09-28 22:06 -0500
        Re: Problem with Dipole Radiation and Relativity noTthaTguY <abu.kuanysh05@gmail.com> - 2015-09-29 11:31 -0700
          Re: Problem with Dipole Radiation and Relativity noTthaTguY <abu.kuanysh05@gmail.com> - 2015-09-29 19:52 -0700
        Re: Problem with Dipole Radiation and Relativity HGW <xxx@....> - 2015-10-03 08:26 +1000
          Re: Problem with Dipole Radiation and Relativity Sam Wormley <swormley1@gmail.com> - 2015-10-02 17:47 -0500
            Re: Problem with Dipole Radiation and Relativity Henry Wilson <HW@.....> - 2015-10-05 04:47 +1100
              Re: Problem with Dipole Radiation and Relativity Sam Wormley <swormley1@gmail.com> - 2015-10-04 18:00 -0500
                Re: Problem with Dipole Radiation and Relativity Maciej Woźniak <mlwozniak@wp.pl> - 2015-10-05 09:46 +0200
                Re: Problem with Dipole Radiation and Relativity Sam Wormley <swormley1@gmail.com> - 2015-10-05 11:48 -0500
                Re: Problem with Dipole Radiation and Relativity Maciej Woźniak <mlwozniak@wp.pl> - 2015-10-05 20:19 +0200
                Re: Problem with Dipole Radiation and Relativity Sam Wormley <swormley1@gmail.com> - 2015-10-05 13:28 -0500
                Re: Problem with Dipole Radiation and Relativity Maciej Woźniak <mlwozniak@wp.pl> - 2015-10-05 21:16 +0200
                Re: Problem with Dipole Radiation and Relativity Henry Wilson <HW@.....> - 2015-10-05 20:01 +1100
                Re: Problem with Dipole Radiation and Relativity Sam Wormley <swormley1@gmail.com> - 2015-10-05 11:52 -0500
                Re: Problem with Dipole Radiation and Relativity Henry Wilson <HW@.....> - 2015-10-06 04:55 +1100
                Re: Problem with Dipole Radiation and Relativity Sam Wormley <swormley1@gmail.com> - 2015-10-06 07:59 -0500
                Re: Problem with Dipole Radiation and Relativity noTthaTguY <abu.kuanysh05@gmail.com> - 2015-10-06 11:34 -0700
                Re: Problem with Dipole Radiation and Relativity "Paul B. Andersen" <relativity@paulba.no> - 2015-10-06 20:55 +0200
                Re: Problem with Dipole Radiation and Relativity HGW <xxx@....> - 2015-10-07 07:50 +1100
                Re: Problem with Dipole Radiation and Relativity "Paul B. Andersen" <relativity@paulba.no> - 2015-10-07 11:15 +0200
                Re: Problem with Dipole Radiation and Relativity HGW <xxx@....> - 2015-10-06 14:52 +1100
                Re: Problem with Dipole Radiation and Relativity Sam Wormley <swormley1@gmail.com> - 2015-10-06 19:15 -0500
                Re: Problem with Dipole Radiation and Relativity HGW <xxx@....> - 2015-10-09 07:36 +1100
              Re: Problem with Dipole Radiation and Relativity Odd Bodkin <bodkinodd@gmail.com> - 2015-10-05 07:39 -0500
                Re: Problem with Dipole Radiation and Relativity Henry Wilson <HW@.....> - 2015-10-06 05:03 +1100
                Re: Problem with Dipole Radiation and Relativity Odd Bodkin <bodkinodd@gmail.com> - 2015-10-05 14:20 -0500
                Re: Problem with Dipole Radiation and Relativity HGW <xxx@....> - 2015-10-06 15:02 +1100
                Re: Problem with Dipole Radiation and Relativity Odd Bodkin <bodkinodd@gmail.com> - 2015-10-06 07:48 -0500
                Re: Problem with Dipole Radiation and Relativity HGW <xxx@....> - 2015-10-07 07:40 +1100
                Re: Problem with Dipole Radiation and Relativity Odd Bodkin <bodkinodd@gmail.com> - 2015-10-06 17:59 -0500
                Re: Problem with Dipole Radiation and Relativity Sam Wormley <swormley1@gmail.com> - 2015-10-06 19:17 -0500
                Re: Problem with Dipole Radiation and Relativity HGW <xxx@....> - 2015-10-09 07:34 +1100
                transitive property noTthaTguY <abu.kuanysh05@gmail.com> - 2015-10-08 12:33 -0700
          Re: Problem with Dipole Radiation and Relativity Tom Roberts <tjroberts137@sbcglobal.net> - 2015-10-08 10:42 -0500
            Re: Problem with Dipole Radiation and Relativity HGW <xxx@....> - 2015-10-09 08:14 +1100
      Re: Problem with Dipole Radiation and Relativity "Paul B. Andersen" <relativity@paulba.no> - 2015-09-29 11:00 +0200
  Re: Problem with Dipole Radiation and Relativity Sylvia Else <sylvia@not.at.this.address> - 2015-10-24 00:03 +1100

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