Path: csiph.com!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail From: Thomas Heger Newsgroups: sci.physics.relativity Subject: Re: Ehrenfest paradox Date: Sun, 14 Jan 2024 07:23:36 +0100 Lines: 46 Message-ID: References: <_0jsOxGnhfz7CDcd7lDwoqp70XM@jntp> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit X-Trace: individual.net VcIv7uUJYF8MCH+I1MMGogH7u8Ge2W3MY8e4wGP11AuszsjFnX Cancel-Lock: sha1:KYNvn8Zc5rdp663x4Mvnzjc6nVk= sha256:zeayqn0Uk5eBXlz9Gn6DLWnQpwDu6MTTUnI18uTBIEU= User-Agent: Mozilla/5.0 (Windows NT 6.0; WOW64; rv:31.0) Gecko/20100101 Thunderbird/31.4.0 In-Reply-To: Xref: csiph.com sci.physics.relativity:627258 Am 10.01.2024 um 15:05 schrieb Richard Hachel: > Le 10/01/2024 à 09:49, Thomas Heger a écrit : >> I'm not attacking relativity per se. >> >> Possibly the example of the rotating disk has some merits and >> eventually the predicted effect do in fact occur. >> >> I'm actually attacking the idea, that rotating FoRs are equivalent to >> non-rotating FoRs. >> >> Rotation is actually measurable, because it involves acceleration and >> that is measurable without external refence points. >> >> (Inertial motion is not measurable without refence points, but >> contains no accelerations.) >> >> As evidence I quote: > > For inertial movements, you simply need to have two points O and O' > which intersect, and you trigger the watches. > > For rotating movements, you need to have a ray that crosses another, and > you trigger the watches. A major error of Einstein and SRT is the use of watches per se. The problem is, that light has finite velocity, even if light is very fast. But this finite velocity of light would make remote watches look seemingly too late (by the time the signals of light take to travel from the watch to the observer). Now it would be a VERY (!!!) stupid idea to compensate this difference and adjust one of the clocks, that there is seemingly no deleay. Instead the delay had to be measured and added to the time seen at the remote clock. But Einstein didn't do that (or even mentioned the delay!). ... TH