Re: capacitance formula

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <Mddeming-at-aol-dot-com>

In a message dated 9/18/02 9:16:27 AM Eastern Daylight Time, tesla-at-pupman-dot-com
writes:


>
> :
>
> > calculators tend to ignore dimensional analysis. If one considers the
> >  > dimensions and not just the numbers, it is immediately obvious that you 
> > get
> >  > the
> >  > same VALUE for A/d in both your examples.
>
> Yes, but let's be careful out there:
>
> >  >       1 in x 1 in / 0.5 in =2 in.
>
> No, it equals 2 in^3
>
> likewise, 2.54 cm x 2.54 cm / 1.27 cm =
> >  > 5.08
> >  > cm
>
> Again: cm x cm x cm = cm^3
>
> Cheers,
> Ralph Zekelman



Sorry Ralph, but back in my day, 
in x in / in was NOT equal to in x in x in and
cm x cm / cm was NOT equal to cm x cm x cm.
Matt D.