| 2018-08-22 | retarding voltage of electrons | blob | diff | raw | |
| 2018-08-22 | antiderivatives, photoelectric energy | blob | diff | raw | diff to current | |
| 2018-08-21 | update methods / physics / spec notes | blob | diff | raw | diff to current | |
| 2018-08-20 | photoelectric effect | blob | diff | raw | diff to current | |
| 2018-08-18 | logarithmic derivatives | blob | diff | raw | diff to current | |
| 2018-08-17 | tangents & normals, light-matter interactions | blob | diff | raw | diff to current | |