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Subject: Re: The failure of the unified field theory means general relativity
 fails.
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From: Tom Roberts <tjoberts137@sbcglobal.net>
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On 6/23/24 3:48 AM, J. J. Lodder wrote:
> Tom Roberts <tjoberts137@sbcglobal.net> wrote:
> 
>> On 6/22/24 9:54 PM, LaurenceClarkCrossen wrote:
>>> Paul Anderson, thanks for the pdf. Your formula employs the
>>> electromagnetic assumption that gravity moves at the speed of light.
>>
>> You got this backwards. In GR, changes in gravity propagate at the local
>> symmetry speed, given by SPECIAL Relativity. It "just so happens" [#]
>> that electromagnetic waves travel at this same speed in vacuum. It is
>> merely an historical anomaly that it is called "the speed of light", due
>> to the round-about way Einstein first described relativity in 1905 --
>> the spacetime symmetry is MUCH more fundamental and important.
>>
>>    [#] This is neither happenstance nor accident....
>>
>> BTW modern derivations of SR don't use electromagnetism at all.
>>
>>> Your formula (1) has c^2 and it is clearly not 1^2, and is in m/s,
>>> contrary to Lodder.
>>
>> Nope. YOU have imposed specific units onto the formula/equation. The
>> equation itself does not impose any particular units on its variables
>> and constants [@], it merely requires that they be self-consistent.
>>
>>    [@] There are many systems of units in common use. You
>>    seem to think there is only one.
> 
> A forteriori, any result that depends on any particular choice
> of units (or dimensions) is unphysical.

Yes, of course. Good point. Similarly, any result that depends on choice 
of coordinates is unphysical.

Tom Roberts