Laws of thermodynamics

Laws of Thermodynamics

Thermodynamics literally means "changing or evolving temperature". It is the science or study of the (dynamic) interactions of atoms and molecules. From it comes the scientific concepts and definitions of heat, energy, work, temperature, entropy, system, equilibrium, order and disorder. Hence, it covers a wide array of disciplinary fields, including physics, chemistry, geology and biology (including organic chemistry and the life sciences). Here are the Laws of Thermodynamics derived from the laboratories of science.

0^th: When each of two systems is in equilibrium with a third, the first two systems must be in equilibrium with each other. This shared property of equilibrium is temperature.

1^st: Law of Energy Conservation: because energy cannot be created or destroyed, the amount of heat transferred into a system plus the amount of work done on the system must result in a corresponding increase of internal energy in the system.

2^nd: The entropy of an isolated system can never decrease.

Entropy is the measure of how close a system is to equilibrium; alternatively, it is a measure of the disorder in a system. Entropy (disorder) of an isolated system can never decrease.

3^rd: First, there exists in temperature a state of absolute zero. Second, absolute zero cannot be attained by any procedure in a finite number of steps (i.e., it can be approached, but not broached).