In message <[email protected]>, dated
Wed, 5 Aug 2015, Doug Smith <[email protected]> writes:
I set up an experiment in the lab and true enough, the discharge
current onto an insulator (amps for ns or so) is quite different for -
and + discharges, much greater for -.
If he discharge was from a metal electrode, the discharge with the metal
negative would be expected to be greater because there are lots of
electrons floating around in the metal and once they get to the surface
they are repelled by the field.
It might be interesting to look at the discharge between PTFE
(tightly-bound electrons) and, say, polythene (less tightly bound).
Again, polythene negative would probably give a stronger discharge,
--
OOO - Own Opinions Only. With best wishes. See www.jmwa.demon.co.uk
When I turn my back on the sun, it's to look for a rainbow
John Woodgate, J M Woodgate and Associates, Rayleigh, Essex UK
-
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