This is a collection of texts, trying to elaborate on frequently asked questions or often discussed issues in the Physics Forums
Euler Angles [pdf]
Theory of rigid-body motion [pdf]
Special Relativity [pdf]
The homopolar generator: an analytical example [pdf]
Quasistationary electrodynamics - fundamentals [pdf]
Relativistic treatment of the DC conducting straight wire [pdf]
The relativistic wave equation [pdf]
The electromagnetic field in GR [pdf]
(Not) against photons [pdf]
Some sins in physics didactics (also in the Insights section of PF) [pdf]
David Wagner, Derivation of the Kerr metric [pdf]
Last updated: February 23, 2022.
Hendrik van Hees