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wrb98
  • Member for 3 years, 9 months
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3 votes
1 answer
73 views

Sound Speed in Cosmological Perturbation Theory

2 votes
1 answer
135 views

Derivation of scaled Richardson number and speed of internal gravity waves for density stratified fluid

2 votes
1 answer
79 views

Adjoint operators and the method of variation for the Orr-Sommerfield problem

1 vote
0 answers
66 views

Quantum solitons: derivation of $ \int {\phi^\prime}^2 dx = M$ using Lorentz invariance

1 vote
1 answer
97 views

Questions relating to stability of plane Couette flow

1 vote
1 answer
224 views

Comoving frames and peculiar velocity in cosmology

1 vote
1 answer
116 views

Raising and lowering indices in line elements - why do we raise and lower them in line elements?

1 vote
0 answers
265 views

Ricci tensor for FRW Metric [closed]

1 vote
2 answers
99 views

Cosmology - Confusion About Visualising the Universe as the Surface of a 3-Sphere

1 vote
0 answers
27 views

Total number of observable light sources in cosmology

1 vote
0 answers
34 views

Four Momentum in an Isotropic and Homogeneous Universe

1 vote
1 answer
29 views

Antiplane shearing: singularities of $\vert\nabla\Phi\vert$

0 votes
1 answer
20 views

Energy density of a neutrino species

0 votes
0 answers
34 views

Lorentz Transformation - Representation for Rotations, the Scalar Product and Kronecker Delta

0 votes
0 answers
14 views

Ratio of specific entropy after a particle decay

0 votes
1 answer
93 views

Comoving Hubble radius in terms of expansion scale factor

0 votes
1 answer
164 views

Visualising the Comoving Hubble Sphere

0 votes
0 answers
24 views

Confusing index notation in cosmological perturbation theory

0 votes
2 answers
58 views

Gravitational Time Dilation and Equivalence Principle

0 votes
1 answer
44 views

Cosmological models of the expansion of the universe for different curvatures

0 votes
2 answers
72 views

Cosmology and Spherical Coordinates

0 votes
0 answers
77 views

Cosmology - The Geodesic Equation Derivation

0 votes
1 answer
54 views

Isotropic Universe and the mean of a 3-vector

0 votes
1 answer
230 views

Four-Vector For Number Flux of Particles

0 votes
1 answer
44 views

Four-vector formulation of electromagnetic quantities

0 votes
1 answer
42 views

Extensional flow of a long thin thread