Hello, I'm Discospinster. I noticed that you recently made an edit to Quantum mechanics that seemed to be a test. Your test worked! 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. Thanks. ... discospinster talk 20:24, 21 October 2013 (UTC)
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