User talk:2402:3A80:101E:9BA5:56B:DEF9:2A53:5545

Hello, I'm DVdm. Your recent edit(s) to the page Frame of reference appears to have added incorrect information, so it has been removed for now. If you believe the information was correct, please cite a reliable source or discuss your change on the article's talk page. If you would like to experiment, please use the sandbox. 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) 16:36, 18 December 2019 (UTC)