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Results tagged with coordinate-systems
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user 68519
A set of numbers used to quantify location in space.
0
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Confusion about polar coordinates
I'm studying polar coordinates, and can't wrap my head around a few things about a few things (and believe me I've tried). I'll get to the point quickly, and I'm not sure if I'm allowed to ask two kin …
- 278
2
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1
answer
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How to understand length contraction via Minkowski diagrams?
Two objects of equal proper lengths are to be compared (let's assume that they can pass through each other). One object is moving with velocity $v$ in the $+x$-direction relative to the other. Let's a …
- 278
1
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1
answer
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How do you obtain the coordinates of 3D space from the FLRW metric?
Under the assumptions of homogeneity and isotropy, it can be deduced that for a one-parameter family of spacelike surfaces folliating spacetime, the curvature within each such surface is constant. Thi …
- 278
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Why does this falsely lead to $g_{\mu \nu}$ always being the identity map?
So I posted a question about the tetrad basis but later realised that there is a more fundamental, underlying question that is better suited here.
I’m using abstract index notation to denote all tenso …
- 278