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2) One of the peculiarity of the drifting process of
electrons (in a conductor at common temperatures) is
the very high ratio between the rms velocity and the
drifting velocity. The flow of water through a porous
medium is a very different kind of "nearly random"
walk. This is just an observation, not criticism.
Ludwik Kowalski
David Bowman wrote:
Regarding the analogies mentioned by John Cockman: