Re: Since k varies but not G suggests an Eather


Randy Poe wrote:
Sue... wrote:
Randy Poe wrote:
guskz@xxxxxxxxxxx wrote:
snip

I see a lot of insightful statements in both posts but
there is a train wreck hidden in there somewhere.
No good deed goes unpunished.

Randy,
If you're agreed these these:
http://newton.umsl.edu/~philf/triplet.html

Electric potential and field magnitude around a triplet
of charges. You remember that potential and field
are two different things, right? The potential far away
from a dipole varies as 1/r^2, the field as 1/r^3.

But these plots show those quantities CLOSE IN,
not far away.

OK I can consider that.


http://hyperphysics.phy-astr.gsu.edu/Hbase/electric/dipole.html#c2

Electric potential far away from a dipole.

...illustrate the same thing, then it might be productive to
see which if any statements are off key and why.

No, those don't show the same things.

First link:
- close in
- 3 charges

Second link:
- far away
- 2 charges.

OK... I can state it another way.




Something guskz wrote about

~a distant hydrogen atom~
~shrinking fields~
...is troubling me and I can't put my finger on it.

A hydrogen atom is not polarized. Water has a dipole
moment (it polarizes in the presence of electric fields)
because the H atoms are not located symmetrically
relative to the O atom.

True. The triplet description won't work well.


Analysing it as a triplet will probably reveal why

I don't know why you'd analyze hydrogen as a
triplet. "Triplet" means three charges. Hydrogen has
one proton, one electron. That's two.

But analyzing it as a dipole is also wrong, since
a dipole requires polar SEPARATION of charges.

It'll work. I'll post following the troubling statement.

Sue...

- Randy

.

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