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Show new changes starting from 13:34, 10 December 2025
 
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10 December 2025

  • diffhist Focal length 05:08 −79 Srleffler talk contribs (Rv. For a real optical system, it is not the distance from anything to the focal point. In the most general case it is not the distance from anything to anything. It's the optical power that is fundamental, and the focal length is the inverse of that. It's not circular, it's just the reverse of what you're used to.) Tag: Undo
  • diffhist Focal length 01:45 +79 VidanaliK talk contribs (fixed circular definition and added extra focal length definitions) Tag: Reverted

9 December 2025