Hej Bruce, > Hej Magnus > > A capacitive sensing AC bridge can be very sensitive, one only has to > look at the work of RV Jones at the university of Glasgow in the 50's, > 60's and 70's. He and his collaborators used capacitive sensors to > detect (among other things) the extrusion of a micrometer shaft as it > was clamped to realise just how sensitive it can be. > They found it possible to detect length changes of less than 1E-11m with > a suitably designed sensor.
Indeed. However, I was trying to hint on a alternative approach or temporary approach which would not need much design to achieve equal performance if the electrodes could not be cleaned or replaced easilly. I trust the capacitive measurement would be sufficiently good even at moderate design efforts. Cheers, Magnus _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
