[Phys-L] Re: Sizes of atoms

[Robert Cohen <Robert.Cohen@PO-BOX.ESU.EDU>]

On 07/11/05 18:47, I wrote:

> I have three objects: A, B and C.  A and B neither attract
> nor repel
> each other.  However, both are attracted to C.
<snip>
> Apparently, I am missing other ways because I am blinded
> by what I already know from other experiments.  Can someone explain
> these other ways to me?

and on 07/11/05 22:42, JD wrote:
<snip>
> Suppose rubbing the balloon just made it hotter, and there
> were some (hitherto unsuspected) fundamental force that
> attracted paper to hotness.  You couldn't disprove it with
> just this one experiment.  And you couldn't prove that there
> was negative as well as positive hotness-fluid involved.
<snip>

I think I understand now.  Just to see if I do, can I also
say that the existence of attraction AND repulsion STILL isn't
sufficient to show that there are two types of charges?

After all, suppose I have two rubbed balloons and they repel.
I still can have just one "hotness fluid" which, for some
unknown reason repels other hotness fluids but attracts paper.

Or am I still missing something?

____________________________________________________
Robert Cohen; 570-422-3428; www.esu.edu/~bbq
East Stroudsburg University; E. Stroudsburg, PA 18301
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