S represents the total
entropy
of all
matter in the universe outside
black holes.
Π or Pi
represents the ratio of circle's circumference to its diameter.
Pi is typically
rounded to 3.14, but has been calculated to
one million places and it true value
is not known and may never be.
G is the
gravitational constant.
k takes the value 0 for Euclidean three-space.
c is the speed of light,
c³ is the speed of light cubed.
h is Planck's Constant.
A
+ is a symbol of operation. + is believed to be
shorthand for the
Latin word et meaning "and."
= is a symbol of
relation. It dates from 1557 in a book by
Robert Recorde. The two parallel lines are meant represent equality.
entropy
def: n. 1. A measure of a system's capacity to undergo spontaneous change.
2. A measure of the disorder or randomness of in
a system.
more:
2nd law
wikipedia
dictonary of the history of ideas
