Re: curved relativity

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Re: curved relativity

dudle	27 Jun 2007 22:19
> > 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?

Tom Roberts	25 Jun 2007 03:18
> 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

John Smith	24 Jun 2007 14:29
> >> "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

OG	24 Jun 2007 14:25
>> >> "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

24 Jun 2007 09:57

> >> "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?

23 Jun 2007 22:58

>> >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.

John Smith	23 Jun 2007 16:06
> >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

23 Jun 2007 11:51

>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.

fishy	23 Jun 2007 11:16
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?

Re: curved relativity

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