I'm inclined to agree with Wouter on this. An inductor is best described, in terms of fluids, by a fluids inertance. An inline tank, or receiver in ME lingo, best describes a capacitor. Voltage = Pressure Current = Mass flowrate Capacitor = Receiver or air tank like in an air compressor Inductor = Inertance or inertia of a fluid Resistor = Restriction in the piping M. ----- Original Message ----- From: "Wouter van Ooijen" > > Yes, but that's only one property of inductance, and it only > > works with "sudden stop", not "sudden start". > > It does: a mass of water will not suddenly start flowing. Inertia will > take care of that. > > > or the reverse "kick" when current flow stops and the magnetic > > field collapses. > > It does. The reverse kick is what makes the ram pump work. And it is > what causes the water bang. > > Wouter van Ooijen -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist