Physics
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Frobenius
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All Questions Answers
Score Newest
answer
47
Deriving Lagrangian density for electromagnetic field
Jul 31, 2016
answer
36
Total spin of two spin-$1/2$ particles
Jun 29, 2017
answer
30
Electric field associated with moving charge
Sep 4, 2018
answer
18
Why do some people write the gravitational force as proportional to $\mathbf{r}/|\mathbf{r}|^3$?
Jun 19, 2019
answer
18
Vector cross product formula without a second term (Spiegel, Theoretical Mechanics)
Oct 16, 2021
answer
16
Physical meaning of the Jacobian in relation to Dirac delta function
Nov 30, 2017
answer
15
Why is there this relationship between quaternions and Pauli matrices?
Aug 4, 2016
answer
14
Derivation of Maxwell's equations from field tensor lagrangian
Jun 7, 2017
answer
14
A mathematically illogical argument in the derivation of Hamilton's equation in Goldstein
May 4, 2019
answer
13
Magnetic field due to a single moving charge
Jun 21, 2018
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Were matrix theory and functional analysis well-known to physicists before the invention of matrix mechanics?

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