Groups > sci.physics.relativity > #476301

Re: E=mc2

From	Odd Bodkin <bodkinodd@gmail.com>
Newsgroups	sci.physics.relativity
Subject	Re: E=mc2
Date	2018-11-05 12:59 +0000
Organization	Aioe.org NNTP Server
Message-ID	<prpeqq$its$7@gioia.aioe.org> (permalink)
References	(5 earlier) <prnhrb$1hgb$1@gioia.aioe.org> <prnr0d$1pl$2@gioia.aioe.org> <prntvs$6i0$1@gioia.aioe.org> <probop$nsq$2@gioia.aioe.org> <prog5q$u55$1@gioia.aioe.org>

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benj <benj.fake@gmail.com> wrote:
> On 11/4/2018 10:00 PM, Odd Bodkin wrote:
>> benj <benj.fake@gmail.com> wrote:
>>> On 11/4/2018 5:14 PM, Odd Bodkin wrote:
>>>> benj <benj.fake@gmail.com> wrote:
>>>>> On 11/4/2018 2:01 PM, Thomas 'PointedEars' Lahn wrote:
>>>>>> benj wrote:
>>>>>> 
>>>>>>> Wake up dumbass. You can prove E=mc² from Maxwell's equations.
>>>>>> 
>>>>>> No, but you can be _deduced_ from that, assuming that the special principle
>>>>>> of relativity holds.  That is precisely what Einstein did in his second
>>>>>> (“annus mirabilis”) 1905 paper on what became special relativity, “Does the
>>>>>> Inertia of a Body Depend Upon Its Energy Content?”:
>>>>>> 
>>>>>> <https://einsteinpapers.press.princeton.edu/vol2-trans/186>
>>>>>> 
>>>>>> Later, in 1929, Paul Dirac showed that it – and more generally, the
>>>>>> energy–momentum relation – can be derived from the properties of flat
>>>>>> spacetime alone:
>>>>>> 
>>>>>> With
>>>>>> 
>>>>>> p⃗    = γ m v⃗ = γ m (v_x, v_y, v_z)
>>>>>> P⃗    = (E/c, p⃗) = γ m (c, v⃗)
>>>>>> ||P⃗||² = (E/c)² − p⃗² = m²c²
>>>>>> 
>>>>>> one finds
>>>>>> 
>>>>>> E² = m²c⁴ + p⃗²c²
>>>>>> 
>>>>>> which gives for the *rest* energy (when v⃗ = 0)
>>>>>> 
>>>>>> E₀ = m c².
>>>>>> 
>>>>>> <https://en.wikipedia.org/wiki/Energy%E2%80%93momentum_relation>
>>>>>> 
>>>>>>> Exponent is squared.
>>>>>> 
>>>>>> Correct.
>>>>>> 
>>>>>> However, previously you have claimed the opposite of what follows from
>>>>>> Maxwell’s equations, namely that the isotropy of the speed of light would
>>>>>> merely be an assumption (instead of an experimental fact).
>>>>> 
>>>>> The Constancy of the speed of light was an assumption made by Einstein
>>>>> to develop special relativity.
>>>> 
>>>> Which is in fact redundant, given the principle of relativity applied to
>>>> electrodynamics.
>>> 
>>> Einstein didn't know it at the time.
>> 
>> Actually, he did.  That’s the section of the 1905 paper where he formulates
>> the covariant form of the electromagnetic field. Kinda the point.
> 
> Boinker how can one seemingly articulate person be such a dumbass?
> The point of the paper was to answer the question which everyone had at 
> the time. You just turn it all upside down and call it sane. so your 
> sane argument is he knew it was true before he proved it? You are such a 
> fool Boinker.

What he wrote is not how he discovered it. It’s how he presented it. He
knew the results of the last section before he chose how to write the first
section. Idiot. 

> 
> 
>>> Nobody did, which was the whole
>>> question of the age. Glad to see that you have now won the "who is
>>> smarter than Einstein" contest again. Maybe you should argue like Mr.
>>> Vulcan that Einstein never said it. You've read all his books and papers.
>>> 
>>>>> 
>>>>>> While it follows from Maxwell’s equations that which is an experimental
>>>>>> fact, namely that the speed of light c is isotropic as it only depends on
>>>>>> the electromagnetic properties of the medium through which (Maxwell’s)
>>>>>> electromagnetic waves, such as light, travel:
>>>>>> 
>>>>>> c = 1/√(ε₀ ε_r µ₀ µ_r).
>>>>>> 
>>>>>> So, are you retracting that claim?
>>>>> 
>>>>> However "[one can] develop relativistic electromagnetism solely on the
>>>>> basis of electromagnetic retardation and the principle of [Galilean]
>>>>> relativity without any additional postulates, hypotheses, or conjectures."
>>>>> 
>>>>> 
>>>>> 
>>>> 
>>>> 
>>>> 
>>> 
>>> 
>> 
>> 
>> 
> 
> 



-- 
Odd Bodkin -- maker of fine toys, tools, tables

Thread

E=mc2 Omar Shabsigh <omar.shabsigh@gmail.com> - 2018-11-01 14:43 -0700
  Re: E=mc2 Odd Bodkin <bodkinodd@gmail.com> - 2018-11-01 22:55 +0000
  E=mc2 "David (Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2018-11-01 16:04 -0700
    Re: E=mc2 "David (Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2018-11-02 09:21 -0700
      Re: E=mc2 "David (Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2018-11-02 09:52 -0700
        Re: E=mc2 "David (Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2018-11-02 15:28 -0700
  Re: E=mc2 Omar Shabsigh <omar.shabsigh@gmail.com> - 2018-11-01 17:53 -0700
    Re: E=mc2 Odd Bodkin <bodkinodd@gmail.com> - 2018-11-02 01:02 +0000
    Re: E=mc2 Libor Striz <poutnik4REMOVEnntp@CAPITALSgmail.com> - 2018-11-02 18:43 +0100
      Re: E=mc2 mlwozniak@wp.pl - 2018-11-02 11:21 -0700
  Re: E=mc2 Sylvia Else <sylvia@email.invalid> - 2018-11-02 13:35 +1100
    Re: E=mc2 mitchrae3323@gmail.com - 2018-11-01 21:43 -0700
    Re: E=mc2 The Starmaker <starmaker@ix.netcom.com> - 2018-11-01 23:09 -0700
    Re: E=mc2 mlwozniak@wp.pl - 2018-11-02 01:33 -0700
    Re: E=mc2 Buck Dehner <uktoa@yswdoez.cb> - 2018-11-04 12:34 +0000
      Re: E=mc2 Libor Striz <poutnik4REMOVEnntp@CAPITALSgmail.com> - 2018-11-04 14:20 +0100
        Re: E=mc2 "David (Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2018-11-04 05:51 -0800
        Re: E=mc2 Buck Dehner <uktoa@yswdoez.cb> - 2018-11-05 20:51 +0000
          Re: E=mc2 Sylvia Else <sylvia@email.invalid> - 2018-11-06 10:57 +1100
            Re: E=mc2 Ntowicz Usarczyk <iswso@wioioksi.io> - 2018-11-06 20:21 +0000
              Re: E=mc2 Sylvia Else <sylvia@email.invalid> - 2018-11-07 08:57 +1100
                Re: E=mc2 Ntowicz Usarczyk <iswso@wioioksi.io> - 2018-11-07 19:35 +0000
                Re: E=mc2 Sylvia Else <sylvia@email.invalid> - 2018-11-08 09:32 +1100
                Re: E=mc2 Gaston Castaneda <agn@j2awdos.nc> - 2018-11-08 21:13 +0000
                Re: E=mc2 Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-11-08 22:26 +0100
                Re: E=mc2 Gaston Castaneda <ucpp@j2adosw.nv> - 2018-11-09 19:46 +0000
                Re: E=mc2 Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-11-10 02:47 +0100
              Re: E=mc2 Libor Striz <poutnik4REMOVEnntp@CAPITALSgmail.com> - 2018-11-07 00:13 +0100
                Re: E=mc2 Ntowicz Usarczyk <iswso@wioioksi.io> - 2018-11-07 19:38 +0000
      Re: E=mc2 benj <benj.fake@gmail.com> - 2018-11-04 13:17 -0500
        Re: E=mc2 Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-11-04 20:01 +0100
          Re: E=mc2 benj <benj.fake@gmail.com> - 2018-11-04 14:38 -0500
            Re: E=mc2 Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-11-04 20:53 +0100
              Re: E=mc2 benj <benj.fake@gmail.com> - 2018-11-04 18:01 -0500
                Re: E=mc2 Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-11-05 01:58 +0100
                Re: E=mc2 benj <benj.fake@gmail.com> - 2018-11-04 22:59 -0500
                Re: E=mc2 Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-11-05 05:39 +0100
                Re: E=mc2 Libor Striz <poutnik4REMOVEnntp@CAPITALSgmail.com> - 2018-11-05 07:54 +0100
                Re: E=mc2 Tom Roberts <tjroberts137@sbcglobal.net> - 2018-11-05 22:33 -0600
                Re: E=mc2 Libor Striz <poutnik4REMOVEnntp@CAPITALSgmail.com> - 2018-11-06 06:27 +0100
                Re: E=mc2 Libor Striz <poutnik4REMOVEnntp@CAPITALSgmail.com> - 2018-11-06 06:28 +0100
                Re: E=mc2 mlwozniak@wp.pl - 2018-11-04 23:28 -0800
            Re: E=mc2 Odd Bodkin <bodkinodd@gmail.com> - 2018-11-04 22:14 +0000
              Re: E=mc2 benj <benj.fake@gmail.com> - 2018-11-04 18:05 -0500
                Re: E=mc2 Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-11-05 02:02 +0100
                Re: E=mc2 benj <benj.fake@gmail.com> - 2018-11-04 22:59 -0500
                Re: E=mc2 Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-11-05 05:51 +0100
                Re: E=mc2 Odd Bodkin <bodkinodd@gmail.com> - 2018-11-05 03:00 +0000
                Re: E=mc2 benj <benj.fake@gmail.com> - 2018-11-04 23:15 -0500
                Re: E=mc2 Odd Bodkin <bodkinodd@gmail.com> - 2018-11-05 12:59 +0000
          Re: E=mc2 Buck Dehner <uktea@yswdoiz.cp> - 2018-11-05 21:00 +0000
            Re: E=mc2 Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-11-13 15:38 +0100
              Re: E=mc2 Gaston Castaneda <uucp@jav4ow.nq> - 2018-11-13 20:22 +0000
                Re: E=mc2 Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2018-11-13 23:09 +0100
                Re: E=mc2 Shon Wible <shwn@shouwe.wh> - 2018-11-14 15:53 +0000
        Re: E=mc2 Buck Dehner <uktoa@yswdoez.cb> - 2018-11-05 20:54 +0000
        Re: E=mc2 Steve BH <sbharris@gmail.com> - 2018-11-07 22:35 -0800
        Re: E=mc2 Steve BH <sbharris@gmail.com> - 2018-11-07 22:44 -0800
          Re: E=mc2 "David (Kronos Prime) Fuller" <fuller.david@hotmail.com> - 2018-11-08 06:34 -0800
      Re: E=mc2 Sylvia Else <sylvia@email.invalid> - 2018-11-05 12:21 +1100
        Re: E=mc2 benj <benj.fake@gmail.com> - 2018-11-04 23:12 -0500
          Re: E=mc2 Sylvia Else <sylvia@email.invalid> - 2018-11-05 16:30 +1100
  Re: E=mc2 Koobee Wublee <koobee.wublee@gmail.com> - 2018-11-02 16:48 -0700
    Re: E=mc2 mitchrae3323@gmail.com - 2018-11-02 19:07 -0700
    Re: E=mc2 Libor Striz <poutnik4REMOVEnntp@CAPITALSgmail.com> - 2018-11-08 08:48 +0100

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