Is the shape of the cavitation
bubble in sonofusion always a torus or flattened-bubble?
Is ball lightning "always" a torus, rather than a
real sphere?
Why are "smoke rings" so stable?
Not sure. There is a famous image of the cavitation
bubble, somewhere on the web, but for some reason a google search has
turned up nothing yet. I do not know if the image is representative of all
"active" bubbles or not.
This could be far more than an issue of idle
curiosity, when it comes to alternative energy.
Anyway, with regard to the subject
of "coincidental" geometry on a number of different scales - there is
the following, which is currently the evolutionary trend in modern "hot" fusion,
and we once again see the spherical torus instead of the earlier topologies
[This is after they have already blown about $15,000,000,000 and never produced
as many neutrons as some of the amateur Farnsworth devices.]
Coincidence - or is this the most efficient
topology for the fusion reaction (hot, cold or warm) going to be this spherical
toroid?
Well, the geometric factor of interest for hot
fusion is said to be the "Aspect ratio - the
single most important geometric characteristic of a tokamak is the aspect ratio;
a number larger than unity corresponding to the ratio between the major and the
minor radii of the plasma torus "
Jones
Like any good detective, Navajo or not (Joe
Leaphorn) - one should be very suspicious of coincidences. The Navajos, BTW take
the extreme view of nature and the so-called "butterfly" effect... for them
there is NO coincidence in nature.
