Misconceptions
of Entropy
The Second Law
of
Thermodynamics
simply states
that “heat
cannot pass from
a colder body to
a warmer body by
itself.”
This concept can
be extrapolated
to include all
potential energy
sources, such as
the potential in
a battery.
Electrons will
flow from
negative to
positive
naturally, but
never the
reverse without
additional
energy input.
Why? Because it
is at the
negative pole of
the battery that
all the
electrons are
originally.
This concept is
saying nothing
more than a high
concentration of
many things that
can flow will
tend to disperse
into an area of
low
concentration if
given an
opportunity.
Potential energy
dissipates until
it becomes spent
or homogonous
within the
system it is
contained in.
The Second law
can also be
stated as
follows:
“Energy in a
closed system
can never
increase.”
“Energy” here
means usable or
potential
energy, and
“closed system”
means without an
additional
outside source
of energy.
Without
additional
energy, spent or
dissipated
energy will not
return to a
concentrated
form, or back to
a potential
state.
Entropy is just
the same idea in
reverse
paraphrasing “Entropy
in a closed
system can never
decrease.”
It speaks from
the viewpoint of
the dissipated
state. An
increase in
entropy just
means more
dissipation; a
decrease means a
return to
potential or
concentration.
The term is
useful in
physics to
describe the
ratio of useful
to non-useful
energy in a
system.
The
misconception
here when
applied to the
debate about
evolution and
the universe is
that entropy
means that there
is a tendency
for everything
to become
disorganized,
which is counter
to evolution,
where things
become more
organized and
complex.
However, entropy
is not about
disorganization
– nor is it
about “everything”:
It is worth
emphasizing
here that
entropy is
not a
measure of
the
"disorder"
or "mixed-upness"
of a system,
…
it is
important to
distinguish
the
definition
of disorder
in the
context of
entropy and
the
definition
of disorder
in the
context of
everyday
usage.
In physics,
the term
"disorder"
in this
sense refers
to a
specific,
well-defined
quantity,
while
disorder in
everyday
usage is
more akin to
disorganization.
~ from
Wikipedia
If one were to
believe entropy
has to do with
organization or
complexity, then
we would have to
assume that the
most organized
or complex state
is one where
potential is
most
concentrated,
and the least
organized or
complex state is when it
is at its most
diffuse; so
in the universe
stars would be
the most
organized and
complex
objects. This
is obviously not
true – the earth
is infinitely
more organized
and complex than
the sun. Most
anything in
nature is more
organized and
complex than
just
concentrations
of electrons,
concentrations
of heat energy –
or stars. There
is also nothing
more
particularly
organized about
concentrations,
than
dispersions.
There is
certainly
nothing stated
in these laws
that imply that
all
physical matter
tends to
dissociate and
disperse. Most
physical matter
does not
represent
potential energy
(not unless you
burn it or
something to
release energy
contained in its
chemical
bonds). Only
those things
that can flow
can represent
potential energy
and dissipate
over a larger
area or into a
larger volume
(heat,
electrons,
water, air,
gasses in
general, etc.).
Your house does
not fall apart
because it is a
source of
potential energy
that “tends” to
homogenize
outward over a
larger area. A
corpse does not
decompose
because it is
potential energy
dissipating out
toward areas of
less density.
Things fall
apart and decay,
not to any
intrinsic
properties of
the object to
dissociate; but
to outside
factors, such as
weathering and
bacteria gnawing
away at them.
Protect objects
from outside
elements that
destroy them and
they will last
indefinitely.
Freeze meat to
keep bacteria
inactive and it
will last
indefinitely.
It actually
takes energy to
tear things
apart.
The second law
of
thermodynamics
in no way
implies that it
itself causes a
result opposite
to that of
complexity.
Just the
opposite is
true. When
potential energy
dissipates it
can cause work
to be done and
things to
happen.
That’s the whole
point of
energy. And,
not only can
energy be
harnessed to do
work, but it
dissipates
better
through an
ordered
structure than a
disordered one
(the
law of maximum
entropy
production),
thus the
dissipation of
energy or the
increase in
entropy is what
actually builds
complex
structures.
Evolution is
completely
consistent with
the second law
of
thermodynamics
and entropy.
It is the very
entropic process
of energy that
makes evolution
happen. |