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Question:
what is the distance in mm traveled by an electron in air?



Replies:
There is not an easy answer. The average distance depends upon the velocity of the electron, which can depend upon many other variables, the density of the air, the detailed composition of the air (e.g. humidity). For "static electricity" the distance traveled may be a fraction of a mm. For a lightning bolt it may be hundreds of meters.

Vince Calder



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