User talk:149.19.40.252

December 2023
Welcome, and thank you for your attempt to lighten up Wikipedia. However, this is an encyclopedia, and articles are intended to be serious, so please don't make joke edits, as you did to Mass–energy equivalence. Readers looking for accurate information will not find them amusing. If you'd like to experiment with editing, please use the sandbox instead, where you are given a certain degree of freedom in what you write. JeffSpaceman (talk) 19:29, 8 December 2023 (UTC)

 Anonymous users from this IP address have been blocked from editing for a period of 31 hours to prevent further vandalism. If you think there are good reasons for being unblocked, please review Wikipedia's guide to appealing blocks, then add the following text to the bottom of your talk page:. HJ Mitchell &#124; Penny for your thoughts? 19:36, 8 December 2023 (UTC)
 * If this is a shared IP address and you are an uninvolved editor with a registered account, you may continue to edit by logging in.