General Relativity part 4: Space moves

In six Level 1 videos we visualize General Relativity with a substratum (“fabric”) that uses the same math as GR, the math of curved surfaces.

Here in part 4 of 6: Space moves, around a spinning black hole (Kerr spacetime). A spinning ZAM ring has zero angular momentum, and any motion relative to this spin, such as a ring or spaceship at rest, suffers the special-relativity effects of contraction, dilation and desynchronization. We look at a 3-dimensional breather as model for a particle: a pattern within spacetime, moving and contracting with voxels.

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