And the moral of that story is....sort out in your own mind
which are the antenna connections and which are the rig
connections!

"Airy R.Bean" wrote in message
...
It brought up something interesting, and that is,
that one half of the G5RV produced no signal
on RX

On Wed, 2 Feb 2005 15:46:58 -0000, "Brian Reay"
wrote:

I thought the pH scale came from "per Hydronium"- H30+ ?

If the 'extra' H came from the water, then there would also be OH- to
neutralise it.

pH is defined as the negative of the logarithm of the hydrogen ion
concentration.

In pure water the product of [H+][OH-] is very close to 10exp-14,
where square brackets indicate concentrations.

Hence in pure water pH = 7 because the concetrations of the two
species are equal.

An acid solution, where [H+] is greater than that in water, has [H+]7

There is a more exact definition involving hydrogen ion activity.
--
from
Aero Spike

"Spike" wrote in message
...
On Wed, 2 Feb 2005 15:46:58 -0000, "Brian Reay"
wrote:

I thought the pH scale came from "per Hydronium"- H30+ ?

If the 'extra' H came from the water, then there would also be OH- to
neutralise it.

pH is defined as the negative of the logarithm of the hydrogen ion
concentration.

In pure water the product of [H+][OH-] is very close to 10exp-14,
where square brackets indicate concentrations.

So, if the water was being 'split', the concentrations would be the same.

Hence in pure water pH = 7 because the concetrations of the two
species are equal.

An acid solution, where [H+] is greater than that in water, has [H+]7


Ah, that sounds familar!

There is a more exact definition involving hydrogen ion activity.

That I don't recall, maybe it was beyond A level ;-)

--
Brian Reay
www.g8osn.org.uk
www.amateurradiotraining.org.uk
FP#898