Re: Resonance

From: Steve Evans (smevans_at_jif-lemon.co.mars)
Date: 11/22/04 

Date: Mon, 22 Nov 2004 23:44:24 GMT

On Mon, 22 Nov 2004 01:19:16 GMT, Robert Monsen
<rcsurname@comcast.net> wrote:

>I dont' want to put you on the spot, but I think there is energy stored
>in resonant systems. Look at the film of the tacoma narrows bridge being
>torn apart due to resonant oscillations. Each little nudge from the wind
>stores more energy in the resonant system, until it collapses.

Yeah, but5 the energy has to come at the *right* moment each time.
it's a bit like pushing a child on a swing. you have to impart the
force at the rpecise time in each arc to get the swing moving with
minimal effort. i think the equivalent term in elctronics is the
'flywheel effect'; get the timing spot-on and you can keep the
oscillation moving with minimal energy input/maximal efficitency. 

-- 
Fat, sugar, salt, beer: the four essentials for a healthy diet.