Entropy vs. Atrophy

Entropy is a scientific concept, as well as a measurable physical property that is most commonly associated with a state of disorder, randomness, or uncertainty. The term and the concept are used in diverse fields, from classical thermodynamics, where it was first recognized, to the microscopic description of nature in statistical physics, and to the principles of information theory.

Atrophy is the partial or complete wasting away of a part of the body. Causes of atrophy include mutations (which can destroy the gene to build up the organ), poor nourishment, poor circulation, loss of hormonal support, loss of nerve supply to the target organ, excessive amount of apoptosis of cells, and disuse or lack of exercise or disease intrinsic to the tissue itself.

Symbol S For a closed thermodynamic system, a quantitative measure of the amount of thermal energy not available to do work.

A wasting or decrease in size of a body organ, tissue, or part owing to disease, injury, or lack of use

A measure of the disorder or randomness in a closed system.

A wasting away, deterioration, or diminution

A measure of the loss of information in a transmitted message.

To cause to wither or deteriorate; affect with atrophy.

The tendency for all matter and energy in the universe to evolve toward a state of inert uniformity.

To waste away; wither or deteriorate.

The deterioration of a system or society, especially when it seems inevitable

(pathology) A reduction in the functionality of an organ caused by disease, injury or lack of use.

A measure of the disorder present in a system.

(intransitive) To wither or waste away.

(Boltzmann definition) A measure of the disorder directly proportional to the natural logarithm of the number of microstates yielding an equivalent thermodynamic macrostate.

(transitive) To cause to waste away or become abortive; to starve or weaken.

(information theory) Shannon entropy

A wasting away from lack of nourishment; diminution in bulk or slow emaciation of the body or of any part.

A measure of the amount of energy in a physical system that cannot be used to do work.

To cause to waste away or become abortive; to starve or weaken.

The capacity factor for thermal energy that is hidden with respect to temperature.

To waste away; to dwindle.

The dispersal of energy; how much energy is spread out in a process, or how widely spread out it becomes, at a specific temperature.

a decrease in size of an organ caused by disease or disuse

A measure of the amount of information and noise present in a signal.

any weakening or degeneration (especially through lack of use)

(uncountable) The tendency of a system that is left to itself to descend into chaos.

undergo atrophy;

A certain property of a body, expressed as a measurable quantity, such that when there is no communication of heat the quantity remains constant, but when heat enters or leaves the body the quantity increases or diminishes. If a small amount, h, of heat enters the body when its temperature is t in the thermodynamic scale the entropy of the body is increased by h ÷ t. The entropy is regarded as measured from some standard temperature and pressure. Sometimes called the thermodynamic function.

(communication theory) a numerical measure of the uncertainty of an outcome;

(thermodynamics) a thermodynamic quantity representing the amount of energy in a system that is no longer available for doing mechanical work;