User talk:119.157.21.176

July 2021
Hello, I'm Graham Beards. I wanted to let you know that one or more of your recent contributions&#32;to Double-slit experiment have been undone because they did not appear constructive. If you would like to experiment, please use the sandbox. If you have any questions, you can ask for assistance at the Teahouse. Thanks. Graham Beards (talk) 09:26, 6 July 2021 (UTC)