User talk:2001:4CA0:0:F298:E988:F34F:7F2C:23C7

September 2019
Hello, I'm Dewritech. I noticed that you added or changed content in an article, Fraunhofer diffraction, but you didn't provide a reliable source. It's been removed and archived in the page history for now, but if you'd like to include a citation and re-add it, please do so. You can have a look at the tutorial on citing sources, or if you think I made a mistake, you can leave me a message on my talk page. Thank you.  Dewritech (talk)  10:54, 18 September 2019 (UTC)
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