Re: Terry's Test - Two Manifestations of Charge

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: Jim Lux <jimlux@xxxxxxxxxxxxx>

At 02:37 PM 7/5/2005, Tesla list wrote:
> Original poster: Terry Fritz <teslalist@xxxxxxxxxxxxxxxxxxxxxxx>
>
> Hi,
>
> At 12:31 PM 7/5/2005, you wrote:
> > Jim,
> > Your last statement doesn't make any sense to me. I realize that 
> > reactance is an AC phenomenon but you say resistance is a DC phenomenon. 
> > Surely you aren't suggesting that resistance doesn't apply to AC?
> > Paul
> > Think Positive
>
> In the AC case, "reactance" is the proper term.  Reactance takes into 
> account the leading and lagging currents.  "Impedance" is another 
> generally used for situations where things are not nice steady sine waves.
Reactance is the imaginary part of the impedance. You'd use impedance for 
steady state systems in general.  Transients might be another story (if 
only because most "real" components do not have constant impedance over 
frequency)


> I think Jim knows that resistance (pure) can apply to AC too :o)))
Probably..
After the last few days developing analyses and writing up measurement 
uncertainties for phase measurement in an RF system, I'm starting to 
disbelieve the practical existence of any pure anything. <grin>  Back to 
batteries, knife switches, and lightbulbs for me!