Talk:Sagitta (optics)

Latest comment: 1 year ago by 208.104.196.99 in topic Sagitta reference

Sagitta reference

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Is there a reference to an optical source, like a textbook, where surface sag is specifically called the Sagitta? I have not found one. 208.104.196.99 (talk) 01:45, 15 July 2023 (UTC)Reply