Esoteric charged particle question

When a charged particle moves in an electric field between
two electrodes, say in a detector, the current due to the
charged particle doesn't suddenly appear when it gets
to the electrode, but a current is induced in both electrodes
proportional to the distance traveled through the electric
field by the charged particle.
(If the electric field is not uniform that needs to be
taken into account.)

This effect was described by one of the old vacuum tube
scientists in a bygone era and is called after his name--the "whatsit"
theorem. I am looking for his name and the name of his
theorem. This is something I used to use in a previous
life and after all these years I can't recall it.

Any ideas?

 

[Phil Hobbs]

LaSF13@netscape.net wrote:

When a charged particle moves in an electric field between
two electrodes, say in a detector, the current due to the
charged particle doesn't suddenly appear when it gets
to the electrode, but a current is induced in both electrodes
proportional to the distance traveled through the electric
field by the charged particle.
(If the electric field is not uniform that needs to be
taken into account.)

This effect was described by one of the old vacuum tube
scientists in a bygone era and is called after his name--the "whatsit"
theorem. I am looking for his name and the name of his
theorem. This is something I used to use in a previous
life and after all these years I can't recall it.

Any ideas?

This is just Maxwell's displacement current. Did it really need proving over

again?

Cheers,

Phil Hobbs