On Sun, Jan 15, 2012 at 3:54 PM, Evgenii Rudnyi <use...@rudnyi.ru> wrote:

 " Some physicists say that information is related to the entropy"

That is incorrect, ALL physicists say that information is related to
entropy. There are quite a number of definitions of entropy, one I like,
although not as rigorous as some it does convey the basic idea:  entropy is
a measure of the number of ways the microscopic structure of something can
be changed without changing the macroscopic properties. Thus, the living
human body has very low entropy because there are relatively few changes
that could be made in it without a drastic change in macroscopic
properties, like being dead; a bucket of water has a much higher entropy
because there are lots of ways you could change the microscopic position of
all those water molecules and it would still look like a bucket of water;
cool the water and form ice and you have less entropy because the molecules
line up into a orderly lattice so there are fewer changes you could make.
The ultimate in high entropy objects is a Black Hole because whatever is
inside one on the outside any Black Hole can be completely described with
just 3 numbers, its mass, spin and electrical charge.

  John K Clark

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