Re: Shake some supercooled water and you get ice, why?

On Feb 18, 1:49 pm, "n...@xxxxxxxx" <Alien8...@xxxxxxxxx> wrote:

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Has the effect been seen in _moving_ water? I mean bulk motion, even
though it's intuitively apparent that supercooled water probably
supports little to no internal convection currents.

If it cannot happen if the water is moving because turbulence
supplies the "knock", in what sense can supercooled water be said to
be liquid?

I've read part of the (long) paper. Some pages missing.

Some of Dorsey's key points seem to be that a sealed ampule of water
-- a given sealed ampule -- has a reproducible temperature of sudden
freezing, and that above that temperature the liquid is not very
sensitive to agitation.

At least for some samples. That does not agree with my extensive
experience with supercooled beer, which does seem to solidify given
merely agitation. Though now I can't remember if that happens before
you open it, which would add more variables. I see I will have to
retread the rigorous experimental regime this summer. :-)

It is sometimes possible to pour supercooled water (he claims), so it
is certainly liquid.

.