sci.physics.electromag

"Benj" wrote
news: @ ...
>
> Szczepan Bialek wrote:
>
> I don't know how one can "show" that the absolute potential of the earth
> is not
> zero if one cannot get to infinity to make the measurement!

You are still "in" the field method. I am trying to transform you "in" the
charge (coulumbian) method.
>
> 1. This is the ONLY zero giving ABSOLUTE potential!

The only in the field method.
>
> 3. Now this idea of yours is VERY interesting. You are defining
> absolute zero potential as when a body contains EQUAL number of
> positive and negative charges! I would point out that this does NOT
> equal zero #1. because nobody knows if "infinity" also has equal
> numbers of positive and negative charges.

We must use only one method. Charge or field.
>
> Like I said one would have to think about relative motions.

Step by step. For students some simplifications are necessary.

> Which brings up another "impossible" question: What is the absolute
> velocity
> of the Earth?

It has been measured ( to adjacent space) in the MM and MG experiments.
S*