Define the second law of thermodynamics?

The phrase 'second law of thermodynamics' means a law stating that mechanical work can be derived from a body only when that body interacts with another at a lower temperature; any spontaneous...

A drop of ink in a glass of water. Drop it in. Count to three while the second law works its magic. Now take it out again.

Heat cannot of itself pass from a colder body to a hotter body.

The entropy of an isolated system will increase over time. Differences in temperature tend to balance, heat flows from high temp. to cold.

1) In general, the second laws states that all energy in the universe will head towards its lowest state. Another way of stating it is "the universe will tend towards maximum entropy" or "heat cannot...