Matter is not localized into a point at any given time, as the Heisenberg uncertainty theory says. So, the photon merely interfered with itself. We once had an example where the uncertainty of determining velocity was given, and computing from the mass and size of the given object (and electron, in this case, speeding with 1/30 of light), and something like 12 meters resulted for uncertainty of determining position. That, in case you didn't realise, is a LOT. Reaching such velocities would be pretty hard though, due to mass also relativistically increasing with velocity.Quote:
Originally Posted by McGuinty