At 10:10 pm 20/06/2006 -0500, Harry wrote:
> New look for "Newton's bucket" 12 May 2006
>
> What happens when you rapidly rotate the
> bottom plate of an otherwise >stationary
> cylinder filled with water? According
> to new work by physicists in Denmark,
> you produce rotating polygons with up
> to six corners on the water's surface.
> This new and spectacular type of
> "instability" could be used to study a
> wide variety of complex systems in
> physics, including rotating flows on
> Earth, hydraulic machinery in industry,
> vortices and tornadoes.
> (Phys. Rev. Lett. 96 174502) ...
>
>> http://physicsweb.org/articles/news/10/5/8/1#0605084
Mmm... Sounds a bit like 8th power vapour writ large. 8-)
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http://www.lsbu.ac.uk/water/strange.html
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Strong shearing of the water is going to
be the 2 dimensional analogue of magnetisation
in ordering the micro hexagonal domains into
macro domains.
Since the Griggs device involves similar strong
shearing forces it suggests that it probably
is OU and is getting its energy from inverse
Carnot-type cycling of the Beta-atmosphere.
Frank Grimer
