User talk:2409:4063:2300:4610:0:0:256A:40A0

October 2021
Hello, I'm Jan Myšák. An edit that you recently made to Harmonic oscillator 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! Jan Myšák (talk) 11:46, 1 October 2021 (UTC)