User talk:196.190.154.190

May 2021
Hello, I'm ThatIPEditor. An edit you recently made to Electromagnetic radiation 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. ThatIPEditor Talk · Contribs 20:17, 19 May 2021 (UTC)