Definitions for "Second Law of Thermodynamics"
There are a few versions of this law. One is that heat flows spontaneously from hot to cold, but not in the reverse direction. Another is that there is no such thing as a 100% efficient heat engine. A third states that the entropy, or disorder, of a system may increase but will never decrease spontaneously.
Heat cannot, of itself, pass from a colder to a hotter body.( 010)
The notion that natural processes that occur in an isolated system are spontaneous when they lead to an increase in disorder, or entropy.
Keywords:  sequence, point, set
Sequence Set point