User contributions
- 15:11, 19 October 2017 (diff | hist) . . (+8) . . m User:HumbertoC19 (current)
- 19:57, 18 October 2017 (diff | hist) . . (+19) . . m User:HumbertoC19
- 17:32, 18 October 2017 (diff | hist) . . (-180) . . m User:HumbertoC19
- 09:20, 18 October 2017 (diff | hist) . . (+2,087) . . N User:HumbertoC19 (Created page with "What is an achromatic lens?<br><br>An achromatic lens or Achromat is a lens that is produced with the goal of restricting the consequences of lens(chromatic and spherical) abe...")
