| 2018-08-01 | wave interference, minor adjustments to locus notes | blob | diff | raw | |
| 2018-07-19 | add more waves notes, chem h20 notes | blob | diff | raw | diff to current | |
| 2018-07-16 | add midyear cheatsheet, add ch8-9 notes for waves | blob | diff | raw | diff to current | |
| 2018-06-21 | actually added physics waves: | blob | diff | raw | diff to current | |