User talk:70.123.148.75

September 2020
Hello, I'm Isabelle Belato. An edit that you recently made to Mass–energy equivalence seemed to be a test and has been removed. 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.   Isabelle 🔔 01:27, 30 September 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.
 * 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.

Please refrain from making unconstructive edits to Wikipedia, as you did with this edit to Mass–energy equivalence. Your edits appear to be vandalism and have been reverted or removed. If you would like to experiment, please use the sandbox. Repeated vandalism can result in the loss of editing privileges. Thank you. Materialscientist (talk) 15:38, 30 September 2020 (UTC)