User contributions
- 22:41, 19 October 2017 (diff | hist) . . (+54) . . m User:Vincent32A (current)
- 00:42, 19 October 2017 (diff | hist) . . (-157) . . m User:Vincent32A
- 14:03, 18 October 2017 (diff | hist) . . (+2,058) . . N User:Vincent32A (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...")
