[Phys-L] Re: collision question

[Bernard Cleyet <anngeorg@PACBELL.NET>]

| Is this an argument for the quantization of the field?

No, but why would you ask???


because I was "stuck" on Compton, photoeffect, etc. and didn't think of  bremsstrahlung, which is, as you point out, exactly dissipative.

bc, record holder of Sr. moments on this list.



Bob Sciamanda wrote:

> See embedded comments, below:
>
> Bob Sciamanda
> Physics, Edinboro Univ of PA (Em)
> http://www.winbeam.com/~trebor/
> trebor@winbeam.com
> ----- Original Message -----
> From: "Bernard Cleyet" <anngeorg@PACBELL.NET>
> To: <PHYS-L@LISTS.NAU.EDU>
> Sent: Thursday, February 17, 2005 8:33 PM
> Subject: Re: collision question
>
>
> | Is this an argument for the quantization of the field?
>
> No, but why would you ask???
>
>
> |
> | bc, who, whatever, wouldn't call it dissipation.
>
> Two electrons flying by (while repelling) each other, generate E/M radiation
> fields which carry away momentum/energy.  This momentum/energy is lost to
> the two particle system and is ultimately absorbed and thermalized by the
> lab walls and/or other objects.  Why can I not say that momentum/energy has
> been dissipated by the two particle system?
>
>
> |
> | Bob Sciamanda wrote:
> |
> | >Because of the third law, all Newtonian interactions will conserve
> momentum
> | >among the interacting objects.  However, momentum can leave the system of
> | >interacting objects via E/M waves (dissipation of momentum?).  Of course,
> | >overall momentum is still conserved.  (Newton's third law is a special
> case
> | >corollary of the conservation of linear momentum.)
> | >
> | >Bob Sciamanda
> | >Physics, Edinboro Univ of PA (Em)
> | >http://www.winbeam.com/~trebor/
> | >trebor@winbeam.com
> | >----- Original Message -----
> | >From: "John Barrer" <forcejb@YAHOO.COM>
> | >To: <PHYS-L@LISTS.NAU.EDU>
> | >Sent: Thursday, February 17, 2005 2:29 PM
> | >Subject: Re: collision question
> | >
> | >
> | >|A related question: Does anyone have a
> | >| conceptual-level explanation for why there are no
> | >| momentum-dissipative mechanisms in collisions? On the
> | >| micro level, if some of the original KE goes to
> | >| increasing the internal vibrations (and internal KE)
> | >| of the objects, why does momentum not get transferred
> | >| in the same fashion? I've never heard (or been able to
> | >| give) a satisfactory explanation to this question.
> | >| Thanks for any pearls of wisdom.
> | >| John Barrere  University HS, Fresno, CA