Cloud chambers

[Herbert H Gottlieb <herbgottlieb@JUNO.COM>]

To make such a cloud chamber work, it may be
necessary to rub the top of the plastic with a wool cloth to
create a static electric charge.


On Thu, 23 Sep 2004 19:52:02 -0400 Ludwik Kowalski
<kowalskil@MAIL.MONTCLAIR.EDU> writes:
> I should have posted this message before sharing what I know about
> cloud chambers.
>
> 1) Consider a vessel filled with air. The bottom of that vessel is
> kept
> at a constant temperature of -60 C while the top is kept  at +20 C.
> At
> time zero the vessel is sealed. What will the vertical distribution
> of
> density become? What will the vertical distribution of pressure
> become?
>
> 2) An open dish with alcohol is placed near the top of the vessel
> before it is sealed. The evaporation of alcohol will be taking
> place.
> At the same time condensation of alcohol will be taking place at
> the
> cold bottom "floor." What will the vertical distribution of density
> become? What will the vertical distribution of pressure become?
>
> Ludwik Kowalski


Herb Gottlieb from New York City
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