User talk:2409:4040:41E:F535:0:0:254F:B8AD

November 2019
Hello, I'm DVdm. 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. DVdm (talk) 15:52, 29 November 2019 (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.