Path: ...!news.snarked.org!news.nk.ca!rocksolid2!i2pn2.org!.POSTED!not-for-mail From: Bertitaylor @novabbs.org (Bertitaylor) Newsgroups: alt.usage.english,sci.physics Subject: Re: The antics of thermodynamics, the depravity of relativity, the bunkum of quantum Date: Mon, 10 Mar 2025 21:55:47 +0000 Organization: Rocksolid Light Message-ID: References: <29ddba74afd0cdddbd9fbef17243485e@www.novabbs.com> <2937ffa1c63968d4b00621247540b721@www.novabbs.com> <1b8634e8fc31423132450161b2ad982e@www.novabbs.com> <63773432e96ef6c23cef09a2c2ccdae9@www.novabbs.org> <54838740bd0a95a0a205880c413bd4f4@www.novabbs.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Injection-Info: i2pn2.org; logging-data="3788170"; mail-complaints-to="usenet@i2pn2.org"; posting-account="8Ljlg8xw5cAHatvjdHGGjEHKUx9ddlqxMwQzk4UFm4k"; User-Agent: Rocksolid Light X-Spam-Checker-Version: SpamAssassin 4.0.0 X-Rslight-Site: $2y$10$0ObioVMv0GKFAkwIJPpZK.QYoIeP16/5c85kHtwpSU8cB783mLAmi X-Rslight-Posting-User: d6bc49351b0faa08a25d2b434d815198335a8b45 Bytes: 4999 Lines: 103 On Mon, 10 Mar 2025 19:16:49 +0000, jerryfriedman wrote: > On Mon, 10 Mar 2025 3:54:39 +0000, bertitaylor wrote: > >> On Sun, 9 Mar 2025 9:50:06 +0000, Peter Moylan wrote: >> >>> On 09/03/25 09:58, Phil wrote: >>>> On 08/03/2025 22:46, Bertietaylor wrote: >>> >>>>>>> It's just as implausible as the suggestion (easily disproved) >>>>>>> that the pressure is zero at the centre of the earth. >>>>>> >>>>>> The pressure is most certainly zero at the centre of the stars >>>>>> and planets. Read a first year book on physics. >>>>> >>>>> Which will say that within an enclosed surface with mass the net >>>>> gravitational force or pressure is zero. >>> >>> Read that first year book yourself. Did you find the words "or >>> pressure"? >> >> You must have been a lousy student in school, Moylan. Did you not learn >> there that Pressure = Force/Area, Where the area involved is >> perpendicular to the force? So if force is say 10 newtons ACTS >> UNIFORMLY upon an immovable area of 1 square meter, then the pressure >> upon that surface is 10 newtons per square meter. >> >> >> >> No, I didn't think so. You've tried to conclude something >>> about the pressure from the gravitational force. That doesn't work, >>> because they are different quantities. >> >> Don't be a bigger fool than you can help, Moylan. Read above. Basically >> if there is no force, there cannot be any pressure. As there is no force >> from gravity at the centre of the Earth/sun, there cannot be any >> pressure there. >> >> So pressure = force/area. When force = 0, pressure = 0. >> >> Think you can get this? >> >>> Gravitational force, like all forces, is a vector quantity. It has a >>> magnitude and a direction. That makes it possible that a number of >>> nonzero vectors can sum to zero; and, indeed, that is what happens >>> inside a spherical shell. >> >> Right. >> >>> Pressure is a scalar. >> >> No. Which ***idiot*** told you that???? >> >> Okay, let us do some school level physics (what Arindam was taught in >> Std 8) >> Pressure is force/area. (Fundamental school level education, useful in >> hydraulics, which Arindam learnt in Std 9). >> Force is a vector >> Area is a scalar, when by convention its orientation is perpendicular to >> the force. >> The division of a vector by a scalar is a vector. >> So pressure is a VECTOR. > ... > > Still have your old textbooks? Yes. Or access on line or > in person to any textbook you trust? You should find > that it says pressure is the /magnitude/ of force over > area, which is a scalar. It is satisfying to point out the true reason for the evils of this world. You have managed to do that with your deliberate confusion to justify the evil and wrong theory of relativity accounting for energy formation by mass destruction - which has absolutely no basis. Pressure in all texts is force divided by area. No text says that it is just the magnitude of the force. All texts say that force is a vector. In other words, pressure is a vector acting in the same direction of the applied force. When we say tire pressure is so much, that means there is so much force acting normally on the tire wall per square inch. So it is a vector all right even though it may sound like a scalar. Like velocity is a vector but speed is a scalar even though they are dimensionally same. You may have to read > carefully and even pay attention to typefaces. The > textbooks I have use italic for vectors and boldface > for scalars. Irrelevant and dishonest. > > -- > Jerry Friedman > > --