Hello, I'm Mark Arsten. I wanted to let you know that I undid one of your recent contributions, such as the one you made with to Nuclear physics, because it didn’t appear constructive to me. If you think I made a mistake, or if you have any questions, you can leave me a message on my talk page. Thanks. Mark Arsten (talk) 01:14, 1 November 2013 (UTC)
Please refrain from making nonconstructive edits to Wikipedia, as you did at Quantum mechanics with . Your edits appear to constitute vandalism and have been reverted or removed. If you would like to experiment, please use the sandbox. Administrators have the ability to block users from editing if they repeatedly engage in vandalism. Thank you. Mark Arsten (talk) 01:16, 1 November 2013 (UTC)
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