User talk:103.216.213.203

December 2018
Hello, I'm Materialscientist. I wanted to let you know that one or more of your recent contributions to Transverse wave have been undone because they did not appear constructive. If you would like to experiment, please use the sandbox. If you have any questions, you can ask for assistance at the Help Desk. Materialscientist (talk) 10:47, 11 December 2018 (UTC)
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April 2020
Hello, I'm Yamaguchi先生. I noticed that you added or changed content in an article, Airoli, 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. Yamaguchi先生 (talk) 19:18, 9 April 2020 (UTC)
 * If this is a shared IP address, and you did not make the edits referred to above, consider creating an account for yourself or logging in with an existing account so that you can avoid further irrelevant notices.