RussellMc <apptechnz <at> gmail.com> writes:=20
>    Note: If you look at nothing else - look at the picture at
> http://www.coe.ufrj.br/~acmq/graetz17.jpg   - water in, "Lightning" out.

Rumor has it that the polarity on a Kelvin drop machine can be selected at
build time by making some small piece of dielectric touch one of the drops
as it parts the spout. I would try a tiny plastic peg or filament, or
perhaps Teflon. Without this, the polarity is random.

-- Peter



--=20
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