- 20:14, 21 July 2020 diff hist -1,091 Digital Filters
- 20:13, 21 July 2020 diff hist +507 Digital Filters
- 19:42, 1 July 2020 diff hist -9 The Doppler Effect
- 23:43, 20 June 2020 diff hist +1 The Doppler Effect
- 23:40, 20 June 2020 diff hist -8 Digital Filters
- 23:39, 20 June 2020 diff hist -26 The Doppler Effect
- 23:38, 20 June 2020 diff hist -24 Digital Filters
- 23:37, 20 June 2020 diff hist -773 Digital Filters
- 23:10, 20 June 2020 diff hist +2 Digital Filters
- 23:10, 20 June 2020 diff hist -1,099 Digital Filters
- 22:25, 20 June 2020 diff hist +1 Digital Filters
- 22:24, 20 June 2020 diff hist -220 Digital Filters
- 22:12, 20 June 2020 diff hist +1 Digital Filters
- 22:04, 20 June 2020 diff hist -766 Digital Filters
- 21:32, 20 June 2020 diff hist +140 Digital Filters
- 21:32, 20 June 2020 diff hist +23 Digital Filters
- 21:29, 20 June 2020 diff hist -1 Digital Filters
- 21:28, 20 June 2020 diff hist -5 Digital Filters
- 20:58, 20 June 2020 diff hist -402 Digital Filters
- 17:54, 19 June 2020 diff hist -316 The Doppler Effect
- 17:35, 19 June 2020 diff hist -533 The Doppler Effect
- 17:04, 19 June 2020 diff hist -205 The Doppler Effect
- 16:49, 19 June 2020 diff hist -229 The Doppler Effect
- 16:15, 19 June 2020 diff hist -248 The Doppler Effect
- 15:58, 19 June 2020 diff hist +1 The Doppler Effect
- 15:57, 19 June 2020 diff hist +1 The Doppler Effect
- 15:47, 19 June 2020 diff hist +23 The Doppler Effect
- 15:38, 19 June 2020 diff hist -197 The Doppler Effect
- 15:27, 19 June 2020 diff hist -58 The Doppler Effect
- 15:17, 19 June 2020 diff hist -57 The Doppler Effect
- 15:12, 19 June 2020 diff hist -194 The Doppler Effect
- 14:54, 19 June 2020 diff hist -18 The Doppler Effect
- 14:44, 19 June 2020 diff hist -98 The Doppler Effect
