| 2018-09-10 | physics cheatsheet - diffraction, huygen etc | tree | diff | |
| 2018-09-09 | draft final cheatsheet | tree | diff | |
| 2018-08-28 | antidiff applications & photoelectric graphics | tree | diff | |
| 2018-08-15 | physics waves cheatsheet | tree | diff | |
| 2018-08-04 | double-slit experiment and em waves | tree | diff | |