hybrid battery thoughts

I cannot imagine how large (physically) a capacitor would need to be in
order to fulfill these requirements.
http://en.wikipedia.org/wiki/Capacitance should suggest the challenges faced
by the concept. (Up for a bit of calculus, are we?).

My Dad - a career electronics technician - once described a one farad
capacitor to me as being roughly the same size as planet earth. I can't say
whether I should believe or disbelieve this claim - but I'm smart enough to
know that there is nothing simple once we fully appreciate the scope of the
problem.

Batteries depend on a chemical reaction to induce an "electromotive
differential" - capacitors do not have this ability thus, for a given
physical size, the battery will win.

Wow... talk about "over-simplified"!!!!

wrote in message

> i had a thought as to wether or not a capacitor(s) could be
> developed for electric cars to drive the wheels. i realize the ones we
> see mostly discharge in a second or two , but i realized they also
> recharge in a second. so if this idea were posible,rechargeing may be
> alot faster than say the 8 hours for most electric cars. and the
> capacitor may weigh alot less that the batteries we use today..
>
> ----------------------------------------------------------------
> http://www.minibite.com/america/malone.htm
>
>
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