Re: Electric gun, WORK ENERGY

[brian whatcott <inet@INTELLISYS.NET>]

Not sure what model you have in mind just now.
I think the original question concerned the mechanism
whereby em waves = photons are dissipated.

Before that it was a mobile charged bead receding from
similarly charged beads on either side.

Afterwards you introduced the idea of a bullet.

Responding to this last (bullet) concept:
the acceleration is usually considered positive for most
of the bullet's trip down the barrel then negative thereafter.

Responding to the motion of a charged bead amongst neighbors -
I'd see this as a dynamic motion, and I'd expect some initial
jostling (or damped oscillation) about a locus of minimum energy.

Responding to the concept of a dissipating em wave: I see it as a
 parcel of photons, which are gradually localised in successive material
 interactions with  charged particles, so that their count passing
some successive "counting position" is reduced.

Brian


At 10:35 11/20/99 -0500, you wrote:
> At any time Fnet=Fcoul-f. The constant negative part
> becomes dominant at large distances. A negative net
> force produces negative acceleration, opposite to what
> it is when the Fcoul is dominant. The projectile looses
> speed till it is stopped. Right?
>
> brian whatcott wrote:
>
> > At 07:46 11/20/99 -0500, Ludwik wrote:
> > ///
> > > It is probably appropriate to think that the emission of e.m. waves
> > > is a thermalizing (dissipative) process, as far as mechanical energy
> > > is concerned. If the removal of the mechanical energy were due to
> > > a constant force f, such as friction, then the bullet would be stopped
> > > somewhere. (The acceleration becomes negative after the coulomb
> > > force becomes smaller than f.)
> >
> > I don't think so. (The last quoted sentence, that is.)
> >
> > brian whatcott <inet@intellisys.net>
> > Altus OK
brian whatcott <inet@intellisys.net>
Altus OK