I think you're confusing current flow in a conductor with current flow in a semiconductor.Conductor: Movement of free electrons [a property of metals].Semiconductor: More like what you're describing [a property of specially doped semimetals or more exotic alloys].
Chris is right about that. Eg.... a parallel plate capacitor. During the charging and discharging stages, the electrons don't move across the 'gap' from one side of the plate to the other when a voltage source is applied across the two plates.
Light thinks it travels faster than anything but it is wrong. No matter how fast light travels, it finds the darkness has always got there first, and is waiting for it.
So I can propagate holes. Trees can drift in one direction, and holes (the LACK of a tree) can propagate in the other direction.
The location of where a hole is moves.
How do you know it's the same hole?
The absence of the electron in the covalent bond is represented by a small circle, and such an incomplete covalent bond is called hole. The importance of the hole is that it may serve as a carrier of electricity comparable in effectiveness to the free electron. The mechanism by which a hole contributes to the conductivity is qualitatively as follows: When a bond is incomplete so that a hole exists, it is relatively easy for a valence electron in a neighboring atom to leave its covalent bond to fill this hole. An electron moving from a bond to fill a hole leaves a hole inits initial position. Hence the hole effectively moves in the direction opposite to that of electron. This hole, in its new position, may now be filled by an electron from another covalent bond, and the hole will correspondingly move one more step in the direction opposite to the motion of the electron.
It just has to be as it's not the same location, right? Unless it's a black hole, but then that's most likely because someone dropped a can of paint.Aaargh!