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Physics
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Boar's user avatar
Boar
  • Member for 3 years, 5 months
  • Last seen more than a month ago
  • Australia
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I hope someday I will be strong enough to help others.

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7
Equivalent definition of Hawking quasi-local mass
Dec 5, 2023
3
How to find the variation of vielbeins?
Jun 15, 2021
1
A wire that is electrically neutral but carries current?
Sep 26, 2021
1
Length contraction in a boxcar problem
Sep 29, 2021
1
Proper time in fixed Rindler coordinate $X=\frac{1}{\alpha}$
Nov 13, 2021
1
The acceleration of a particle moving at fixed Rindler coordinate $X=\frac{1}{g}$ [closed]
Nov 15, 2021
1
A water-bottle demonstration of atmospheric pressure
Feb 2
0
Derivation of the transformation rules for vielbein and spin connection
Jun 12, 2021
0
Trying to derive the Bianchi identities $R_{[abc]d}=0$ and $\nabla_{[a}R_{bc]}^{de}=0$
Jun 22, 2021
0
Tidal Love numbers and the Schwarzschild metric
Jun 24, 2021
Top network posts
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8
Two definitions of linearly independent vector fields
7
Linearization of scalar curvature: $DR|_g(h)=-\Delta_g(\mathrm{tr}_g h)+\mathrm{div}_g(\mathrm{div}_g h)-\langle\mathrm{Ric}_g,h\rangle_g$
6
Do orthogonal projections play a role in diagonalizability?
6
Piecewise smooth vector field along a one-parameter family of curves
5
Is the "Its transpose is its inverse" definition of an orthogonal matrix equivalent to the "It preserves the dot product" definition?