User contributions
- 17:29, 19 October 2017 (diff | hist) . . (-16) . . m User:BobbyeRider40 (current)
- 17:42, 18 October 2017 (diff | hist) . . (-132) . . m User:BobbyeRider40
- 19:21, 17 October 2017 (diff | hist) . . (+2,053) . . N User:BobbyeRider40 (Created page with "What's an achromatic lens?<br><br>An achromatic lens or Achromat is a lens that is produced for the purpose of restricting the consequences of lens(chromatic and spherical) ab...")
