On Jan 4, 2008, at 10:39 AM, James Propp wrote:
By the way, what Fred Lunnon calls "admittence", namely the reciprocal of resistance, is something I always thought was called "conductance". Is this ones of those transatlantic terminological differences? I asked Google, and it gave 0 results for "electrical admittence", about 5700 results for "electrical admittance", and about 76300 results for "electrical conductance". To determine whether use of admittance vs. conductance correlates with geography, we'd need a hybrid of the Google search engine with Google Maps that instead of just counting hits would show us a map of the world with each hit represented by a red dot at the physical location hosting the site. :-)
Admittance is the AC (complex) extension of conductance. Resistance is to Impedance as Conductance is to Admittance.