Re: OT - Global Warming Revisited

Cliff wrote:
>
> On Fri, 30 Sep 2005 21:21:18 GMT, BottleBob <bottlbob@xxxxxxxxxxxxx>
> wrote:
>
> >Cliff wrote:
> >>
> >> On Fri, 30 Sep 2005 03:05:49 GMT, BottleBob <bottlbob@xxxxxxxxxxxxx>
> >> wrote:
> >>
> >> >Cliff wrote:
> >> >>
> >> >
> >> >> John,
> >> >> Free electrons have little to do with the conduction of
> >> >> heat.
> >> >
> >> >Cliff:
> >> >
> >> > Free electrons are supposedly one of the main reasons why metals
> >> >conduct heat so well compared to other substances.
> >> >
> >> >> Don't confuse it with electricity or electrical conduction.
> >> >
> >> > Actually, I believe that the metals that are the best electrical
> >> >conductors tend to also be the best conductors of heat.
> >> >
> >>
> >> Gee .... then explain why Diamond conducts better ......
> >
> >Cliff:
> >
> > Since when is Diamond (carbon), considered a metal? You DID notice the
> >word "Metal" in my two statements above, didn't you?
>
> "Best conductors of heat"? "Best electrical conductors"?

Cliff:

That's not what I said, is it. What *I* said is right in the post
you're responding to. But to refresh your memory here it is again:
"Free electrons are supposedly one of the main reasons why *METALS*
conduct heat so well compared to other substances." "Metals" emphasized
so you'll have no trouble missing it again.

>
> >> And raising the temperature increases the thermal conductivity while
> >> decreasing the electrical conductivity .....
> >>
> >> So electrically conductive saltwater should be an even better by
> >> far thermal conductor than deionized water?
> >
> > Saltwater is obviously not a METAL, now is it.
>
> Why not, all those "free electrons" to conduct all that
> heat .... <G>?

You're asking why saltwater isn't a metal?? Please define METAL.

>
> >> Electrons play a role in some cases but that's not all that there
> >> is to it.
> >> Like I kept telling John, look at the mass of the electron compared
> >> to atoms then consider Newton's momentum & energy ...
> >
> >===========================================================
> >http://hyperphysics.phy-astr.gsu.edu/hbase/hframe.html
> >
> > Non-metallic solids transfer heat by lattice vibrations so that there
> >is no net motion of the media as the energy propagates through. Such
> >heat transfer is often described in terms of "phonons", quanta of
> >lattice vibrations. Metals are much better thermal conductors than
> >non-metals because the same mobile electrons which participate in
> >electrical conduction also take part in the transfer of heat.
> >===========================================================
>
> You saw the numbers I posted for Diamond & Silver & forgot already?

I didn't forget. I just pointed out that the free electrons in metals
are conducive to conduction, thermal as well as electrical. Contrary to
your criticism of John's comments.

>
> >===========================================================
> >http://physics.bu.edu/~duffy/py105/Heattransfer.html
> >
> >Conduction
> >
> >When heat is transferred via conduction, the substance itself does not
> >flow; rather, heat is transferred internally, by vibrations of atoms and
> >molecules. Electrons can also carry heat, which is the reason metals are
> >generally very good conductors of heat. Metals have many free electrons,
> >which move around randomly; these can transfer heat from one part of the
> >metal to another.
> >===========================================================
> >
> > What's the matter with you lately Cliff, you just seem to be making
> >these WAG's seemingly based only upon pure conjecture and speculation.
>
> Nope.
> But some have a few comprehension issues.

I fail to understand what emotional need is satisfied by your constant
obfuscation and misdirection.

--
BottleBob
http://home.earthlink.net/~bottlbob
.

Relevant Pages

  • On Superconductors, Superfluids and Heat Transfer
    ... HEAT conduction takes place via the movement of particles (such as ... No HEAT conducting particles travel much faster than the speed of light. ... You mean that electrons are impelled to move under the impulse of the ... Conduction electron speeds in metals ...
    (sci.physics.relativity)
  • Re: OT - Global Warming Revisited
    ... >> Free electrons are supposedly one of the main reasons why metals ... >>conduct heat so well compared to other substances. ... >>> Don't confuse it with electricity or electrical conduction. ...
    (alt.machines.cnc)
  • Re: OT - Global Warming Revisited
    ... >>> Free electrons are supposedly one of the main reasons why metals ... >>>conductors tend to also be the best conductors of heat. ...
    (alt.machines.cnc)
  • Re: OT - Global Warming Revisited
    ... >Cliff wrote: ... >heat conductors was completely valid, for metals. ... Was that before or after the business of the conduction bands ...
    (alt.machines.cnc)
  • Re: Metallic bond
    ... Metals are generally very electropositive (or, ... When sodium reacts with chlorine, ... potato" with the electrons. ... Solid state physics is unnecessary to convey ...
    (sci.chem)