815 reputation
825
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location United Kingdom
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visits member for 4 years, 1 month
seen 2 hours ago

Studied physics and maths at school many years ago.


Jun
2
accepted How are these two Riemann tensor equations equivalent?
May
14
accepted Carroll's derivation of the geodesic equations
May
14
accepted Why two different Lagrangians to derive geodesic equations?
May
10
accepted Differentiating the Lagrangian to find geodesic equations?
Mar
4
accepted How to tell if a star is in a galaxy?
Nov
22
accepted Derivation of the Riemann tensor confusion
Nov
17
accepted Is this covariant derivative identity true?
Oct
24
accepted Geodesic deviation equation - why does the ordinary second derivative give the correct answer?
Aug
28
accepted Which of these two textbook equations of geodesic deviation is correct?
Jun
5
accepted Minkowski metric and definition of coordinate differentials?
Dec
19
accepted Riemann curvature tensor symmetries confusion
Sep
9
accepted Index raising and lowering - how does it work?
Jul
13
accepted Derivation of freely falling frame in Schwarzschild spacetime
Jun
5
accepted Einstein-de Sitter - confusing constant of integration
May
29
accepted Kronecker delta confusion
Jan
22
accepted Is this interpretation of $\psi=\frac{1}{\sqrt{\pi a^{3}}}e^{-r/a}$ correct?
Jan
15
accepted Calculation of spherical Bessel functions - meaning of $\left(\frac{1}{x}\frac{d}{dx}\right)^{l}$
Dec
31
accepted Don't understand the integral over the square of the Dirac delta function
May
7
accepted Zero divergence of energy-momentum tensor and gravitational energy
Apr
26
accepted Confusion regarding geodesic of thrown ball - curved or Cartesian coordinates?