1) Why is the velocity of light called "c"? Okay, before you answer this, I am fully aware that the scientific community doesn't like questions that start with "why", but I just do not understand why it's not "v" or "q" or any other random letter. I've learned how precise scientists are with everything so there must be a reason why the velocity of light is represented by the letter "c" and not some other letter. 2) Why--again, I know Donis or Wannabe or Spam won't like this word, but I honestly can't think of the right word to use--is it that, mathematically speaking, the velocity of light must be squared and then mulitplied by the mass to derive the energy content of something? I mean, if the equation read E=MC, that would completely throw it all off, right? But what is about the squaring that makes things so much different? If all this has been explained in another thread, please post a link. Otherwise, I look forward to your answers.