User talk:103.115.14.12

April 2022
Hello, I'm Mrjulesd. An edit that you recently made to Mass–energy equivalence seemed to be a test and has been reverted. If you want to practice editing, please use the sandbox. If you think a mistake was made, or if you have any questions, you can leave me a message on my talk page. Thanks! Jules (Mrjulesd) 09:39, 17 April 2022 (UTC)