User talk:2409:4043:318:5B5A:0:0:288A:A0B1

February 2021
Hello, I'm 1997kB. An edit you recently made to Wave–particle duality seemed to be a test and has been removed. If you want more practice editing, the sandbox is the best place to do so. 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. &#8208;&#8208;1997kB (talk) 13:40, 19 February 2021 (UTC)