Quote: (Originally Posted by
granso)

I promise I'd do some research on that and let you know. I might be wrong but it just sounds strange to me.
I think the key words are 'Mean free path', Einstein-Bose statistics, Brownian motion and the concept that the motion through the scrubber is actually irrelevant and we are dealing with a particle migrating towards a wall in a passageway.
I think.