Re: [Phys-l] sudden Vacuum freezing

[Brian Whatcott <betwys1@sbcglobal.net>]

At 07:19 PM 5/7/2007,  John M., you wrote:

>  We also
> considered the latent heat and concluded on that basis that the
> product couldn't be solid ice.  Indeed, the opacity of the product in
> the video makes it pretty clear that it isn't.....
> John Mallinckrodt
>
> Professor of Physics, Cal Poly Pomona


Opacity does not seem to me to be a certain indicator of a
liquid water interface. I can as easily suppose that disruptive
random crystallization is responsible,       I recall that a boule of ruby
requires the steady accretion of vapor at the interface, like
 diamond too,   with the attendant energy flux if one hopes to
avoid opacity.

    Suppose that the energy flux precedes the crystallization, and
 the situation shows a different face. Is it specially difficult to
measure the energy flux into a volume containing chilled pure
 liquid water?


Brian Whatcott    Altus OK    Eureka!