User talk:Kekking434

November 2014
Hello, I'm Falcon8765. I wanted to let you know that I undid one of your recent contributions —the one you made with this edit to Refractive index— 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.  Falcon8765  (T ALK ) 00:42, 17 November 2014 (UTC)