Re: Impedance, Mechanical, Electrical

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: <davep@xxxxxxxx>


> A capacitor stores energye.
   among other things.
   And, in general, energy is not a 'thing':  energy is
   a property associated with 'things'.

> Charge and energy are different.
   Indeed.   Many things can store more than one 'thing'.
   eg, consider a tank of compressed air, to continue the
   the mechanical analogy.  This tank stores air, as the
   capacitor, ot ballon surfce, stores charge.  That stored
   air has energy, by virtue of its pressure.  The parallel
   is quite exact.

> I can "charge" a balloon by rubbing it with
> something like wool. It then has a net charge. A
> capacitor has no net charge.
   compare a charges cap to a charged balloon...
    best
     dwp