User talk:2405:205:10A:3434:0:0:99A:D8AC

May 2019
Hello, I'm 94rain. An edit you recently made to Geometrical optics seemed to be a test and has been removed. If you want more practice editing, the sandbox is the best place to do so. If you think I made a mistake, or if you have any questions, you can leave me a message on my talk page. Thank you. 94rain Talk 15:29, 22 May 2019 (UTC)
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