User contributions
- 00:31, 19 October 2017 (diff | hist) . . (+23) . . m User:BelleVallejos9 (current)
- 18:59, 18 October 2017 (diff | hist) . . (-168) . . m User:BelleVallejos9
- 13:17, 18 October 2017 (diff | hist) . . (+2,075) . . N User:BelleVallejos9 (Created page with "What is an achromatic lens?<br><br>An achromatic lens or Achromat is a lens that is created for the purpose of restricting the consequences of lens(chromatic and spherical) ab...")
