...I feel like I'm in the Monty Python 'argument sketch'
Yes, I couldn't agree with you more!, there are constant developments and changes in theory, none more so than in the field of sub atomic particle identification. If you cast your mind back to the way we were taught about atomic structure based upon Niels Bohrs planetary model of an atom with 3 parts, protons, neutrons and electrons, then compare it to the now known particles, over 20, thanks to particle accelerator research, you begin to grasp the fact that we seem to be guessing all the time at what actually happens at a sub atomic level.
Electron flow however, hasn't changed, and still remain the core of is it a particle?, or is it a wave?, hang on!, Eureka!! turns out it's both!!!
Right, here goes, last stab at this topic for me ( you're biting into my lunch time for Gawd's sake )
- and +, left and right, line up a load of atoms with free electrons ( a conductor ) introduce a positive charge on the right ( voltage, or potential difference ) and the negatively charged free electron on it's left will change state to positive so the move is from left to right, look at it though and visually, the flow would appear to be from right to left, right?
Jeez! I'm getting dizzy here
If you would like to while away a few weeks you could follow the following link, absolutely rivetting stuff ( not )
http://books.google.co.uk/books?hl=...ts=8S4l-pijsp&sig=pJCst6Kn8xeYO_pBQfsNUhMJTxo
Good luck.
Oh! and by the way, this all happens at the speed of light, not a slow progression at all, same as photon transmission ( light ), oh NO, let's not go THERE !
I can feel me quantum mechanics engine revving up!!!