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Path: news.eternal-september.org!eternal-september.org!.POSTED!not-for-mail From: "Paul.B.Andersen" <relativity@paulba.no> Newsgroups: sci.physics.relativity Subject: =?UTF-8?Q?Re=3A_=22Perverted_Space-Time_Geodesy_in_Einstein?= =?UTF-8?Q?=E2=80=99s_Views_on_Geometry=22?= Date: Mon, 17 Mar 2025 22:10:42 +0100 Organization: A noiseless patient Spider Lines: 43 Message-ID: <vra2sl$t2hn$2@dont-email.me> References: <5a08098675fb8becf884e3621a3083e4@www.novabbs.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Injection-Date: Mon, 17 Mar 2025 22:06:30 +0100 (CET) Injection-Info: dont-email.me; posting-host="49a1491751e455a4a5b5abba4fed4d69"; logging-data="952887"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1/U+GEBe4/+xlNhYl9mPySd" User-Agent: Mozilla Thunderbird Cancel-Lock: sha1:LtIFyDpzYTAvIL1mqILkRpa1hWU= Content-Language: en-GB In-Reply-To: <5a08098675fb8becf884e3621a3083e4@www.novabbs.com> Den 17.03.2025 21:32, skrev LaurenceClarkCrossen: > June 2018 Philosophia Scientae 22(2):137-162 > DOI:10.4000/philosophiascientiae.1449 > Authors: > Mario Bacelar Valente > Pablo de Olavide University > > "Abstract > A perverted space-time geodesy results from the idea of variable rods > and clocks, whose length and rates are taken to be affected by the > gravitational field. By contrast, what we might call a concrete geodesy > relies on the idea of invariable unit-measuring rods and clocks. Indeed, > this is a basic assumption of general relativity. Variable rods and > clocks lead to a perverted geodesy, in the sense that a curved > space-time may be seen as a result of a departure from the Minkowskian > space-time as an effect of the gravitational field on the rate of clocks > and the length of rods. In the case of a concrete geodesy, we have a > curved space-time "directly", the curvature of which can be determined > using (invariable) unit-measuring rods and clocks. In this paper, we > will make the case for the plausibility of the claim that Einstein's > views on geometry in relation to general relativity are permeated by a > perverted geodesy." > > https://www.researchgate.net/publication/326652489_Perverted_Space- > Time_Geodesy_in_Einstein%27s_Views_on_Geometry The very first statement in the Abstract reveals the author Mario Bacelar Valente as an ignorant crank. "A perverted space-time geodesy results from the idea of variable rods and clocks, whose length and rates are taken to be affected by the gravitational field." In SR and GR measuring rods always retain their proper length, and clocks always run at their proper rate. Neither are affected by gravity or motion. Didn't you understand that, Laurence? duh! -- Paul https://paulba.no/