Path: ...!Xl.tags.giganews.com!local-1.nntp.ord.giganews.com!news.giganews.com.POSTED!not-for-mail NNTP-Posting-Date: Tue, 25 Jun 2024 03:57:01 +0000 Date: Mon, 24 Jun 2024 22:57:01 -0500 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: The failure of the unified field theory means general relativity fails. Newsgroups: sci.physics.relativity References: <693b1f71c994c268d60983eb81fc6aaa@www.novabbs.com> <17db55a7e5709ab7$1933$480477$c2365abb@news.newsdemon.com> <9283a49bcc091b1f621ebd566d650a38@www.novabbs.com> <6677e170$0$11724$426a74cc@news.free.fr> Content-Language: en-US From: Tom Roberts In-Reply-To: <6677e170$0$11724$426a74cc@news.free.fr> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Message-ID: Lines: 36 X-Usenet-Provider: http://www.giganews.com X-Trace: sv3-h8p7IlkfoK82nhYXUctkUVVlbTbX4RcgI082yRE56hMNKPmikoZ7wGHTroBBq4AX2qoAF8YbgG/Odu/!3NlnAkoROZyG2s5K88uXN6bf015aCmbIAnip3M5FcGMrkqpCBy6PiJKw7jF+2s29SzIr3N0O8A== X-Complaints-To: abuse@giganews.com X-DMCA-Notifications: http://www.giganews.com/info/dmca.html X-Abuse-and-DMCA-Info: Please be sure to forward a copy of ALL headers X-Abuse-and-DMCA-Info: Otherwise we will be unable to process your complaint properly X-Postfilter: 1.3.40 Bytes: 2967 On 6/23/24 3:48 AM, J. J. Lodder wrote: > Tom Roberts 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