Time dilation not correct??? Hello First, I would like to start with the simple fact that I am not a physicist/mathematician so please bear with me if I ask somewhat simple/stupid questions. I did however have some exposure of maths during my university years but not so much so that I can answer the following question myself. Only recently I have begun to look at the equations that lie behind everything (when time permits me to do so). Few weeks ago, I have stumbled across a website with an online transcription of a book where the author tries to dispute the correctness of Einstein’s conclusions with equations that according to him, support his claims. Needless to say, to me it all sounds ludicrous as his conclusions are as far as I know not supported by any experiments so it must be that his calculus is flawed somewhere. I have a hunch about where that could be but I would be very grateful if somebody could look at one chapter of the book about the time dilation maybe try to find where that fault might be. His conclusion is that the correct [tex]\gamma[/tex] should be http://users.net.yu/~mrp/formula18.301.gif [Broken] and not http://users.net.yu/~mrp/formula18.302.gif [Broken] Here is the link: <snipped> You might ask why I bother. Well, I just want to understand and in order to do so it is sometimes necessary to look at things that (I presume) contain errors. Thank you for stopping buy.