[ExI] Thermal expansion - Ball and ring experiment

[Mike Dougherty]

On 6/12/07, spike <spike66 at comcast.net> wrote:
> > Yep, that's my contention also. My problem is, how to prove this to
> > someone who doesn't believe me, short of actually doing the
> > experiment?

you probably can't.  I once tried to have this conversation with
someone who was absolutely convinced that things contract when you
heat them - his proof was that a handrolled cigarette become more firm
(and that obviously implied "more compact") after waving a lighter
back and forth under it.  With that kind of logic, there is no
rational counter-argument.  The best you can do there is act suprised
like you just learned something and let it go.  :)