1 Mar 2005 17:11:49 UTC

Topic 188173

(moderation:

I am guessing that a gravity wave distortion of space also distorts time, such that to an outside observer if space is expanded time slows, and vice versa, if space is compressed time accelerates. This is because the speed of light remains constant.

Is this correct? Neat stuff! :)

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## Distortion of Time?

)

gravitational waves propogate in space-time so yes it distorts both space and time

> to an outside observer if space is expanded time slows, and vice versa,

no no, not exactly, to say true i am not sure what real effect GW has, but try to imagine Minkowsky pseudo-eucledian 4-D plane - it is a "flat" plane on which we can project real curved space-time and see how projections of the curved 4-d space-time's intervals look on that Minkowsky plane. Just have in mind that distanse ds in Minkowsky plane is measured as (ds)^2=(dx)^2+(dy)^2+(dz)^2-(dt)^2

it means for example that the line (0,0,0,0)-(0,0,0,1) is longer than the line (0,0,0,0)-(1/2,0,0,1)

## > gravitational waves

)

> gravitational waves propogate in space-time so yes it distorts both space and

> time

> > to an outside observer if space is expanded time slows, and vice versa,

> no no, not exactly, to say true i am not sure what real effect GW has, but try

> to imagine Minkowsky pseudo-eucledian 4-D plane - it is a "flat" plane on

> which we can project real curved space-time and see how projections of the

> curved 4-d space-time's intervals look on that Minkowsky plane. Just have in

> mind that distanse ds in Minkowsky plane is measured as

> (ds)^2=(dx)^2+(dy)^2+(dz)^2-(dt)^2

> it means for example that the line (0,0,0,0)-(0,0,0,1) is longer than the line

> (0,0,0,0)-(1/2,0,0,1)

>

Wasn't that the answer on "Final Jeopardy" last night?

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## Not on this planet! :-) > >

)

Not on this planet! :-)

> > gravitational waves propogate in space-time so yes it distorts both space

> and

> > time

> > > to an outside observer if space is expanded time slows, and vice

> versa,

> > no no, not exactly, to say true i am not sure what real effect GW has,

> but try

> > to imagine Minkowsky pseudo-eucledian 4-D plane - it is a "flat" plane

> on

> > which we can project real curved space-time and see how projections of

> the

> > curved 4-d space-time's intervals look on that Minkowsky plane. Just have

> in

> > mind that distanse ds in Minkowsky plane is measured as

> > (ds)^2=(dx)^2+(dy)^2+(dz)^2-(dt)^2

> > it means for example that the line (0,0,0,0)-(0,0,0,1) is longer than the

> line

> > (0,0,0,0)-(1/2,0,0,1)

> >

>

> Wasn't that the answer on "Final Jeopardy" last night?

>