Re: Strange shape- what is math behind it?

It is mentioned that an analog solution is difficult. Can the problem
be digitised? Clearly nature has little difficulty calculating the DNA
strand and all subsequent self similar spiralling that compresses it
for optimum packing. It seems it uses the same technique for all
spiralling. This is derived solely from the bases and their
interconnectivity. One could define the bases as quantum mechanical
operators.


ivars.fabriciuss@xxxxxxxxx wrote:

These are good references, but so far they fall short of what I was
looking for:

I am looking for a flexible pipe with liquid inside. This pipe then
gets twisted. I doubt that conditions of inextensibility and
unshearability hold in this case. I think criticality parameter formula
may hold in some form, but:

As there is liquid inside, it is possible that at very high viscosity
friction forces can not be neglected.
As the pipe is flexible, most likely even garden hose gets extended
slightly if liquid inside is relatively incompressible.

I am looking forward to more reference suggestions. Someone must have
tackled the problem already, at least formulated it.

I will continue to search among references given, but if someone can
provide a shortcut, I would appreciate that a lot.

.

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