this post was submitted on 08 Jan 2024
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Physics

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A method to straighten curved space-time (phys.org)
submitted 2 years ago by fossilesque@mander.xyz to c/physics@mander.xyz
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[–] John_Hasler@lemmy.one 8 points 2 years 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@lemmy.world 2 points 2 years ago (2 children)

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

[–] acockworkorange@mander.xyz 2 points 2 years ago

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