- #1

DaveC426913

Gold Member

- 21,452

- 4,948

- TL;DR Summary
- What is the source of the lateral "squashing" when falling into a black hole?

(Classical model)

The radial "stretching" is caused by differential gravity (tides), but what is the lateral squashing caused by? Is it because the "force" of gravity is not parallel, but instead comes from a point, forming an acute angle?

(Einsteinian model)

I guess it's pretty trivial to explain in curved spacetime - the curvature near a black hole can be measured both radially and circumferentially, yes? (That's just a little less intuitive.) And they curve in opposite "directions", so opposing "forces".

The radial "stretching" is caused by differential gravity (tides), but what is the lateral squashing caused by? Is it because the "force" of gravity is not parallel, but instead comes from a point, forming an acute angle?

(Einsteinian model)

I guess it's pretty trivial to explain in curved spacetime - the curvature near a black hole can be measured both radially and circumferentially, yes? (That's just a little less intuitive.) And they curve in opposite "directions", so opposing "forces".