this post was submitted on 08 Jan 2024
16 points (94.4% liked)

Physics

1332 readers
14 users here now

founded 2 years ago
MODERATORS
[email protected]
16
A method to straighten curved space-time (phys.org)
submitted 10 months ago by [email protected] to c/[email protected]
5 comments fedilink hide all child comments
you are viewing a single comment's thread
view the rest of the comments
[–] [email protected] 8 points 10 months ago (1 children)

Curvature is well defined for manifolds with any number of dimensions. "Flat" in this context means "zero curvature", not "two dimensional".

[–] CM400 2 points 10 months ago (2 children)

Can I get an ELI5, please? I understand all of those words, but not the concepts behind them in this context…

[–] [email protected] 2 points 10 months ago

The definition of a right angle depends on the number of dimensions. Perpendicularity and parallelism are different in higher dimensions. Space is hard.