Path: csiph.com!eternal-september.org!feeder.eternal-september.org!mx02.eternal-september.org!.POSTED!not-for-mail From: jimp@specsol.spam.sux.com Newsgroups: sci.physics Subject: Re: Without Einstein it would have taken decades longer to understand gravity Date: Tue, 24 Nov 2015 20:02:43 -0000 Organization: A noiseless patient Spider Lines: 35 Sender: Jim Pennino Message-ID: <3cseic-d0e.ln1@mail.specsol.com> References: <56536610.51BD@ix.netcom.com> <0JKdndH97MvT7M7LnZ2dnUU7-Q2dnZ2d@giganews.com> Injection-Info: mx02.eternal-september.org; posting-host="db4120ef82bbc153014637d4cd15a795"; logging-data="4968"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX18IVXHTCyAPLMX8HHWotMzE" User-Agent: tin/2.2.1-20140504 ("Tober an Righ") (UNIX) (SunOS/5.10 (i86pc)) Cancel-Lock: sha1:Qku3pJF+UxlNDzIdaW0NtzyWwEc= Xref: csiph.com sci.physics:535159 Sam Wormley wrote: > On 11/23/15 1:16 PM, The Starmaker wrote: >> Gravity is 'just a theory'....there is no proof or fact that there such >> a thing as ...Gravity. > > Is there some reason you can float without touching the ground? Is there some reason you keep posting this over and over again, ass hole? > > Without Einstein it would have taken decades longer to understand > gravity >> http://phys.org/news/2015-11-einstein-decades-longer-gravity.html > >> To describe curved space-time, Einstein called upon the earlier work >> of Bernhard Riemann, a 19th century mathematician. And with the help >> of his friend Marcel Grossman, also a mathematician, Einstein spent >> several exhausting years learning the mathematics of curved spaces, >> or what mathematicians call "differential geometry". As Einstein >> commented, "compared with understanding gravity, special relativity >> was mere child's play". >> >> Now Einstein had the mathematical tools to finalise his theory. His >> equivalence principle stated that an accelerating reference frame is >> equivalent to a gravitational field. From his geometrical studies, he >> believed the gravitational field was simply a manifestation of curved >> space-time. Hence, Einstein could show that accelerating frames were >> represented by non-Euclidean space. > > -- Jim Pennino