User talk:46.69.193.172

December 2020
Hello, and welcome to Wikipedia. This is a message letting you know that one or more of your recent edits to History of optics has been undone by an automated computer program called ClueBot NG.

Thank you. ClueBot NG (talk) 17:18, 20 December 2020 (UTC)
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 * The following is the log entry regarding this message: History of optics was changed by 46.69.193.172 (u) (t) ANN scored at 0.927434 on 2020-12-20T17:18:10+00:00