Physics and Math Notes
- Physics and Math Notes by Jed Chapin
- Questions and comments welcome: firstname.lastname@example.org
- Differential Geometry
- Rotational Dynamics
This presentation of 3d rotations is based on the rigid-body chapter in Goldstein's "Classical Mechanics". I replaced ideas involving infinitesimal rotations with derivatives. There is some bumpy and exhausting math but I hope the reader gets a better understanding of tumbling objects. Possibly read Appendix K at the end for inspiration (or intimidation).
Really good rotations video
- Electrodynamics and Special Relativity
This note is aimed at students with a high-school level understanding of special relativity. The message is that the relativistic effects on space and time are no more surprising than electromagnetism. I heard this somewhere but don't have a reference and don't know if it is true.
- Asymmetry of the Twin Paradox
I think I read something like this once upon a time.