Why does Space-Time curve and more importantly, why and how does Space and Time come together to form a “fabric”?
In: Physics
We find that everyone agrees on a certain measurement between two events, the spacetime interval, ie the time between them squared minus the square of the distance between the two events. (c^2 T ^2 = c^2 t^2 – x^2 – y^2 – z^2)
What does this imply?
Think in two dimensions, say on a square sheet. That sheet has to be somewhat special in that if you stretch it in some direction, it has to squeeze in the other in such a way that the surface remains the same. It sounds like I’m describing a piece of fabric.
Be it tight pants or spacetime, it behaves the same. Stretching it in one direction (space or time) makes the other direction (time or space) squeeze to preserve the overall surface. This is why you can say spacetime has a nature similar to that of fabric
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