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Physics
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ajd138's user avatar
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ajd138
  • Member for 8 years, 9 months
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question
4
Why is the spatial term for contravariant 4-gradient negative, whereas for other 4-vectors it is the covariant part that is negative spatially?
Mar 12, 2016
answer
2
What happens if I put one pole of a magnet beyond the horizon of a black hole?
Sep 16, 2017
answer
2
If reference frames are equally valid, then why do teachers say the geocentric view is wrong?
Sep 18, 2022
question
0
Does the EPR paradox assume that entangled particles leave each other's light cones, or not?
Apr 27, 2019
question
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Proof that the scalar curvature of a two-dimensional space can be expressed by only one component of the Riemann tensor
May 4, 2019
Top network posts
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17
How do Western democracies justify censorship of foreign media outlets?
16
Could a British monarch "go full dictator" if they wish to do so?
11
Revisiting the unreasonable effectiveness of mathematics
8
What's the basis for preparations to imminent Russian invasion into Ukraine?
7
Why does the USA have such a large military?