time dilation limit? (how much does time dilate at "c") Hi, this is my first post here. I'm sort of an amateur. Here's my question: I was concerned about the idea, many times suggested, that if you were to travel -and I know that it's impossible- at the speed of light, you would see that everything in the world around would slow down and eventually stop (Of corse, you wouldn't see it, but stay with me). I wanted to know if this was real, so I made calculations of my own, and get to the conclusion (perhaps ridiculous) that as the effect described is a consequence of time dilation, I needed to calculate how much would time dilate at the speed of light. I didn't knew how to use the Minkowski diagram to do this, so I use a method of my own but I came with a way that seems right to me, and I found that there is a maximum top of time dilation and it's as short as a ratio a little shorter than 1:4. Meaning, if that's right, that time can only dilate less than four times with respect to that of the other frame of reference. In other words, every second of one frame stands for four of the other. This would be the maximum possible dilation. Please tell me if I got everything completly wrong.