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Re: latent heat of evaporation



I really do not fully understand your reply.
Don't bubbles always form below the surface???
Under what conditions would you expect the
bubbles to be formed elsewhere?

Herb :-)


On Sun, 26 Sep 2004 14:44:31 -0400 Ludwik Kowalski
<kowalskil@MAIL.MONTCLAIR.EDU> writes:
I suppose that latent heat of evaporation of water,
L=540 cal/gm, applies to evaporation from the
surface (to overcome attractive molecular forces).
What evidence can be found that L remains the
same during intensive boiling? I am watching a
heating resistor immersed in a beaker. In this
case most bubbles are formed below the
surface, near the heating coil.
Ludwik Kowalski




Herb Gottlieb from New York City
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