Path: csiph.com!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail From: Thomas Heger Newsgroups: sci.physics.relativity Subject: Re: Failures of the Galilean transformation Date: Sat, 23 Sep 2017 12:56:41 +0200 Lines: 57 Message-ID: References: <2017091221064667105-@news.giganews.com> <10921718.O9o76ZdvQC@PointedEars.de> <1b97f699-d4c7-41fc-9041-3fdec761811b@googlegroups.com> <5311903.lOV4Wx5bFT@PointedEars.de> <89f48ca9-98d8-4280-8a10-d279f2c660c5@googlegroups.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit X-Trace: individual.net Cydt3v8444iF37aJUbhZ8QKubtZB0SWgNk7QUBc5EjZki0jjtZ Cancel-Lock: sha1:bDt2Jcd1C4rM3nYXXJjFqVzUd8k= User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:38.0) Gecko/20100101 Thunderbird/38.6.0 In-Reply-To: Xref: csiph.com sci.physics.relativity:433441 Am 22.09.2017 um 22:30 schrieb mlwozniak@wp.pl: > W dniu piątek, 22 września 2017 21:36:57 UTC+2 użytkownik Thomas Heger napisał: > >> I was NOT talking about my 'physical sense', of course, but about the >> 'meaning of the term v in SRT'. >> >> so: what do you think, how this 'v' should be interpreted? > > And angels dancing on a pinhead - will they dance > tango or rather foxtrot? > Still 'dancing angels' was not the subject. So they may dance whatever they like. But we were talking about SRT and whether or not someone with an advanced spaceship could reach c. I said, this term 'c' requires a frame of reference, in respect to which velocity should be measured. But SRT says this: "Examples of this sort, together with the unsuccessful attempts to discover any motion of the earth relatively to the “light medium,” suggest that the phenomena of electrodynamics as well as of mechanics possess no properties corresponding to the idea of absolute rest. They suggest rather that, as has already been shown to the first order of small quantities, the same laws of electrodynamics and optics will be valid for all frames of reference for which the equations of mechanics hold good." But if no absolute rest exists, no absolute reference point exists neither. This would cause difficulties, if you try to define the meaning of c. I (kind of) solved this issue by introduction of something I call 'subjectivism': any observer is the center of the universe by definition and therefore at rest (in respect to himself). What the observer calls 'universe' is actually his own past light cone, hence not universal at all. This 'universe' has an intrinsic speed limit we call c, since what is moving faster drops out of sight (out of that universe). So: Since the observer in this advanced spaceship is still at rest, he cannot reach c. TH