User contributions for 24.15.46.186

13 July 2012

• 11:2011:20, 13 July 2012 diff hist +16,982 N Cardinal point (optics) →Focal and afocal systems, focal points

13 June 2012

• 06:2006:20, 13 June 2012 diff hist +3,760 N Wave propagation No edit summary