699 reputation
622
bio website
location United Kingdom
age
visits member for 3 years, 6 months
seen Dec 7 at 18:05

Manual worker. Live in England. Formal scientific education "peaked" many years ago when I failed maths and chemistry A-level and scraped a bare pass in physics. Still enjoy pottering about in maths and physics.


Nov
21
asked Derivation of the Riemann tensor confusion
Nov
17
asked Is this covariant derivative identity true?
Oct
17
asked Geodesic deviation equation - why does the ordinary second derivative give the correct answer?
Oct
1
answered Geodesic deviation on a unit sphere
Sep
3
asked Geodesic deviation on a unit sphere
Aug
28
asked Which of these two textbook equations of geodesic deviation is correct?
Aug
27
asked Textbook disagreement on geodesic deviation on a 2-sphere
Jun
5
asked Minkowski metric and definition of coordinate differentials?
Dec
18
asked Riemann curvature tensor symmetries confusion
Sep
9
asked Index raising and lowering - how does it work?
Aug
5
answered Understanding Tensors
Jul
12
asked Derivation of freely falling frame in Schwarzschild spacetime
Jun
3
asked Einstein-de Sitter - confusing constant of integration
May
29
asked Kronecker delta confusion
Jan
21
asked Is this interpretation of $\psi=\frac{1}{\sqrt{\pi a^{3}}}e^{-r/a}$ correct?
Jan
15
asked Calculation of spherical Bessel functions - meaning of $\left(\frac{1}{x}\frac{d}{dx}\right)^{l}$
Dec
30
asked Don't understand the integral over the square of the Dirac delta function
May
5
asked Zero divergence of energy-momentum tensor and gravitational energy
Apr
25
asked Confusion regarding geodesic of thrown ball - curved or Cartesian coordinates?
Apr
24
asked Why do objects follow geodesics in spacetime?