[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Impedance, Mechanical, Electrical
Original poster: Mddeming@xxxxxxx
Adam, All,
But, a capacitor stores energy by MEANS of storing opposite
charges in two separate places within it (the plates). Each plate has
a net charge, but the whole capacitor, considered as a closed system,
has no net charge. Likewise, the balloon in your example has a net
charge, but the balloon and wool, considered together as a closed
system, has no net charge. Your distinction fall flat.
This analogy does not explain the difference that you claim
exists. Still sounds like a large sophomoric semantic game to me
yielding no deeper understanding.
Matt D.
BTW coils and capacitors have been used to mimic behavior of the
springs and shock absorbers in the design of automobile suspensions
since at least the 1930s.
In a message dated 2/28/07 1:28:30 A.M. Eastern Standard Time,
tesla@xxxxxxxxxx writes:
Original poster: Yurtle Turtle <yurtle_t@xxxxxxxxx>
A capacitor stores energy. Charge and energy are
different. I can "charge" a balloon by rubbing it with
something like wool. It then has a net charge. A
capacitor has no net charge.
Adam
--- Tesla list <tesla@xxxxxxxxxx> wrote:
> Original poster: <davep@xxxxxxxx>
>
>
> > I think it's fantastic that you are trying to put
> > complex concepts into layman's terms. I'd like to
> > suggest one "tweak". I've always thought that to
> > describe a capacitor as "storing charge" didn't
> make
> > sense. It stores energy, not charge. Energy and
> charge
> > are different.
> Analogies can be powerful, can also be
> confusing.
>
> > Of course, that may confuse them even more, since
> > we're all taught by "expert" books and professors
> that
> > a cap stores "charge".
> What, then, does a cap store?
>
> best
> dwp
>
>
>
----------
AOL now offers free email to everyone. Find out more about what's
free from AOL at
<http://pr.atwola.com/promoclk/1615326657x4311227241x4298082137/aol?redir=http%3A%2F%2Fwww%2Eaol%2Ecom>AOL.com.