Hi I read on Wikipedia that "it is impossible to set up a voltage difference in a superconductor". This means that in a very long superconductor a change of voltage in one end would be noticed immediately in the other end. It seems like an infinite speed of light.
Could this be used to speed up communication? How can this be possible when we have been taught that the speed of light is a limitation? David David Jonsson, Sweden, phone callto:+46703000370
