User talk:Ravi9494853894

March 2012
Welcome to Wikipedia. We welcome and appreciate your contributions, including your edits to Reflection coefficient, but we cannot accept original research. Original research also encompasses combining published sources in a way to imply something that none of them explicitly say. Please be prepared to cite a reliable source for all of your contributions. Thank you. -- JmaJeremy talk contribs 15:02, 4 March 2012 (UTC)