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wrb98
  • Member for 3 years, 11 months
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0 votes
1 answer
241 views

Four-Vector For Number Flux of Particles

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0 answers
14 views

Ratio of specific entropy after a particle decay

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0 answers
34 views

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

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1 answer
44 views

Cosmological models of the expansion of the universe for different curvatures

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1 answer
20 views

Energy density of a neutrino species

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0 answers
37 views

Four Momentum in an Isotropic and Homogeneous Universe

3 votes
1 answer
81 views

Sound Speed in Cosmological Perturbation Theory

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0 answers
28 views

Confusing index notation in cosmological perturbation theory

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1 answer
193 views

Visualising the Comoving Hubble Sphere

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1 answer
97 views

Comoving Hubble radius in terms of expansion scale factor

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0 answers
27 views

Total number of observable light sources in cosmology

1 vote
2 answers
102 views

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

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0 answers
278 views

Ricci tensor for FRW Metric [closed]

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1 answer
47 views

Four-vector formulation of electromagnetic quantities

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1 answer
54 views

Isotropic Universe and the mean of a 3-vector

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0 answers
77 views

Cosmology - The Geodesic Equation Derivation

1 vote
1 answer
237 views

Comoving frames and peculiar velocity in cosmology

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2 answers
76 views

Cosmology and Spherical Coordinates

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2 answers
58 views

Gravitational Time Dilation and Equivalence Principle

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1 answer
43 views

Extensional flow of a long thin thread

1 vote
1 answer
119 views

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

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0 answers
66 views

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

2 votes
1 answer
79 views

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

1 vote
1 answer
98 views

Questions relating to stability of plane Couette flow

2 votes
1 answer
135 views

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

1 vote
1 answer
29 views

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