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Natural Science Forum / Physics / Relativity / June 2007curved relativity
i still dont understand curved space as postulated by relativity what happens there with our space, becomes contracted, compressed, extended, dilated or nothing happens with it? >i still dont understand curved space as postulated by relativity > > what happens there with our space, becomes contracted, > compressed, extended, dilated or nothing happens with it? Simply put, you get things like gravity :) > >i still dont understand curved space as postulated by relativity > > > what happens there with our space, becomes contracted, > > compressed, extended, dilated or nothing happens with it? > > Simply put, you get things like gravity :) correct, this is like you being stooopid not knowing it >i still dont understand curved space as postulated by relativity > > what happens there with our space, becomes contracted, > compressed, extended, dilated or nothing happens with it? It's all to do with the geometry of the 'space' (actually 'space-time', but that's another matter) In 'flat' spacetime, the angles in a triangle adds up to 180 degrees When referring to spacetime as 'curved', what this means is that the geometry is no longer flat, so the sum of the angles between three straight lines is no longer 180 degrees. General Relativity tells us that the geometry (or the metric, which is the mathematical description of the geometry) depends on the distribution of mass and energy. > >i still dont understand curved space as postulated by relativity > > [quoted text clipped - 3 lines] > It's all to do with the geometry of the 'space' (actually 'space-time', but > that's another matter) If the shape of space is not flat, then I guess you'll need to expend energy in order to move in a straight line. If the shape of space-time is not flat, then? > In 'flat' spacetime, the angles in a triangle adds up to 180 degrees > When referring to spacetime as 'curved', what this means is that the [quoted text clipped - 4 lines] > mathematical description of the geometry) depends on the distribution of > mass and energy. >> >i still dont understand curved space as postulated by relativity >> > [quoted text clipped - 7 lines] > If the shape of space is not flat, then I guess you'll > need to expend energy in order to move in a straight line. It entirely dpends on the definition of 'straight line' you are using. > If the shape of space-time is not flat, then? > [quoted text clipped - 8 lines] >> mathematical description of the geometry) depends on the distribution of >> mass and energy. > >i still dont understand curved space as postulated by relativity > [quoted text clipped - 11 lines] > mathematical description of the geometry) depends on the distribution of > mass and energy. you cant see that you are saying nothing regarding the question a triangle on a sphere does not curve the space >> >i still dont understand curved space as postulated by relativity >> [quoted text clipped - 19 lines] > > a triangle on a sphere does not curve the space The question was to explain the meaning of 'curved' with regard to relativity. 'Curved' means not having the same geometry as 'flat'. One sign of the difference is that the angles of a triangle need not add up to 180. The measurement of the displacement of the star's position made by Eddington during the 1919 eclipse demonstrated that the geometry of spacetime was distorted by the mass of the Sun. > >> "fishy" <r6t7g...@deliveryman.com> wrote in message > [quoted text clipped - 26 lines] > The question was to explain the meaning of 'curved' with regard to > relativity. you cant read dork, do that crap esplanaitions to your sister reread and understand the foken question > >> > what happens there with our space, becomes contracted, > >> > compressed, extended, dilated or nothing happens with it? >> >> "fishy" <r6t7g...@deliveryman.com> wrote in message >> [quoted text clipped - 35 lines] >> >> > what happens there with our space, becomes contracted, >> >> > compressed, extended, dilated or nothing happens with it? The geometry changes. That is what happens. > >> "John Smith" <e6k8s...@registerednurses.com> wrote in message > [quoted text clipped - 41 lines] > > The geometry changes. That is what happens. no, should be more than that geometry also change on a surface of a sphere, but all these passive curved space must be much more then that >> >> "John Smith" <e6k8s...@registerednurses.com> wrote in message >> [quoted text clipped - 52 lines] > > curved space must be much more then that OK, can I sugges then that you find out how it's different from that and come back and tell us. You can apologise for your rudeness then. > >> "John Smith" <e6k8s...@registerednurses.com> wrote in message > [quoted text clipped - 59 lines] > OK, can I sugges then that you find out how it's different from that and > come back and tell us. You can apologise for your rudeness then. your sugges is not good you cant see that gravity is different from triangles, can you? >> >> "John Smith" <e6k8s...@registerednurses.com> wrote in message >> [quoted text clipped - 67 lines] > you cant see that gravity is different from > triangles, can you? I've explained the meaning to the OP. I don't really mind if you're not satisfied. > geometry also change on a surface of a sphere, > but all these passive > curved space must be much more then that The essence of GR is that the manifold is spaceTIME. It is curvature in space-time planes that we call gravity. Tom Roberts > > geometry also change on a surface of a sphere, > > but all these passive [quoted text clipped - 4 lines] > > Tom Roberts thanks, but really, there are people having difficulties visualize a real 4d world, while for a 2d real world even i have difficulties to visualise are you saying that our universe is a 2d surface? |
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