Depending on the conductivity of the air, it takes between 1 and 3 MV/m to start an electron flow in the air between two conductors.
Euric I usually say 'the last metre'. In my limited experience of electronics, it seems to me that electrons have quite a lot of trouble jumping across most gaps � unless you push them really hard! Cheers, Pat Naughtin LCAMS Geelong, Australia --
