Well i always read about them, but does anyone know where i can look at the actual equations? Some examples might be Einsteins Theory of Relativity (not mass, but space and time) or Dirac's complete equation describing the electron; the one which earned him the Nobel Prize. I dont understand why these are never in books, i could assume that they are too long and complicated, but i dont know. I would be very interested in seeing some of the math, instead of just reading about it. I made a thread a while ago about books that are intermediate in this field but also have some math involved. THanks!