1. THIS MEANS THAT
THINGS FALL.
THEY FALL FROM HEIGHTS OF
ENERGY AND STRUCTURED
INFORMATION INTO
MATTER IS ENERGY. MEANINGLESS, POWERLESS
DISORDER.
ENERGY IS INFORMATION.
EVERYTHING IS INFORMATION.
PHYSICS SAYS THAT
THIS IS CALLED
STRUCTURES... BUILDINGS,
SOCIETIES, IDEOLOGIES... ENTROPY.
WILL SEEK THEIR POINT OF
LEAST ENERGY.
Entropy (S) = a measure of randomness or disorder
2. Entropy
It’s just a measure of disorder
Physics classrooms are full of Entropy!
11. Entropy Curve
Solid Liquid Gas
S ← vaporization
Entropy
← fusion
0
0 Temperature (K)
12. The Statistics of Entropy
Another way to think about entropy is
that being disordered is just more
likely.
It’s just chance
13. A box containing air molecules, divided in two compartments
with a hole in the dividing wall. Since there are many more
molecules in the left compartment, there will also be many
more molecules crossing the divide from left to right.
The second law of thermodynamics states that in an isolated system
the entropy will increase.
In the statistical definition of entropy according to Boltzmann, this
means that the system will evolve to its most probable state.
14. Entropy, Marble Example
• Suppose you have a bag with 50 red
marbles and 50 green marbles
• You draw a marble, record its color, return
it to the bag, and draw another
• Continue until four marbles have been
drawn
• What are the possible results and what are
their probabilities?