Changed By: Laz Change Date: April 30, 2011 08:42PM Electrical conductivity of oil; /oil as dielectric; a piezoelectric sensor; oil as dielectric; an optical sensor?
Regarding the first: there's no perfect insulator, right? Ok, piezoelectric seems the least plausible.
Original Message
Author: Laz Date: April 30, 2011 08:40PM Electrical conductivity of oil; a piezoelectric sensor; oil as dielectric; optical sensor?
Regarding the first: there's no perfect insulator, right? Ok, piezoelectric seems the least plausible.