User talk:120.138.12.223

January 2023
Hello, I'm Lightoil. I noticed that you made a change to an article, V. O. Chidambaram Pillai, but you didn't provide a source. I’ve removed it for now, but if you’d like to include a citation to a reliable source and re-add it, please 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. Thanks. Lightoil (talk) 02:09, 24 January 2023 (UTC)

December 2023
Hello, I'm Materialscientist. I wanted to let you know that I reverted one of your recent contributions—specifically this edit to Michelson interferometer—because it 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 Teahouse or the Help desk. Thanks. Materialscientist (talk) 00:35, 7 December 2023 (UTC)