Re: Error in Wikipedia article: Faraday's law of induction


"Don Kelly" <dhky@xxxxxxx> wrote news:OTefk.110294$gc5.47073@xxxxxxxxxxxx

It's a bit more than this simplistic and superficial approach.
To get a high voltage between two points, it is NECESSARY that there is a
charge separation.

No. Assume that you have very small cloud composed of 10 small charged
drops. Between the cloud and the Earth is some voltage. If the drops join
together the voltagr rise.

This separation of charge

In contemporary science the separation of charge is used in place of
build/lowering of voltage. Current flow from high voltage to lower. Not from
more charge to less.

is the cause of the voltage difference- look at the definition of
potential difference. Updrafts, wide temperature ranges, and charge
separation due to changes in temperature followed by freezing are some of
the factors.
Suffice it to say that there are parts of a cloud that are negative with
respect to earth and parts which are positive due to charge buildup.

Are you talking about voltage?
All parts of clouds have excess of electrons.

The
electric fields are related to these charges and lightning, between earth
or cloud to cloud consists of high field breakdown (in steps) providing an
ionized path for a rebalance of charge

Charge or voltage?

As for heat stored in a storm cloud- note that the temperature of the
known charge storage regions of thunderheads is generally in the -30
to -40C range. Thermal energy is involved- it is the driving force behind
the charge separation, but somehow, heat storage is rather questionable at
least. As for storage of electrons (and actually in some regions, storage
of positive ions) -isn't that a storage of charge? You are contradicting
yourself.

During condensation of steam the heat is expeled.

Do we know the actual mechanisms involved? To some extent we do but we
certainly cannot say "this is what happens" rather than "this may be the
main mechanism" Do we know all the mechanisms and what part each of the
known mechanisms play?- definitely not.

There is a great deal of literature with respect to lightning- read it!

Meteorology is a new science. Physics is older. Lightnings folows the
physics laws. Meteorologist should read physics.
S*


.

Relevant Pages

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