Deletion of Crackle physics I believe that you should reconsider the deletion of Crackle physics I summed up my reasons on the talk page The only source is a webpage that admits that the terms in this article were made up on usenet A common usage in mathematical or physics journals or a widely excepted text using these terms would proof their validity I have not found any such usage nor have I ever heard the terms used in any physics or mathematics class through my graduate work or any presentations