Re Instantaneous frequency You made a very subtle change at this article replacing with 1 2 You did not put an edit summary however This is not good as it is tiny changes without explanation which introduce a lot of errors in Wikipedia and the rules at the edit summary page requires that you explain such changes May I ask that you write at tall Instantaneous frequency why you replaced with 1 2 and that in the future you use an edit summary when you make big edits and when you make small but subtle edits Thanks I know that you are the originator of that article but that is no excuse to not explain your actions however you re absolutely right once in a while i hit the Save page button realizing too late that i left out an explanation the reason it is instead of or is because measured in hertz is the same as measured in rad sec except that it is reduced by a factor of so it was a mistake that i made originally that i happened to see and made an on the spot correction lately my wiki mind has been on the Bogdanov Affair more than anything else and i ve been dropping the ball