can be burned, but cannot be "unburned". The word 'entropy' has entered popular usage to refer to a lack of order or predictability, or of a gradual decline...

Entropy is a scientific concept, most commonly associated with states of disorder, randomness, or uncertainty. The term and the concept are used in diverse...

In information theory, an entropy coding (or entropy encoding) is any lossless data compression method that attempts to approach the lower bound declared...

In information theory, the entropy of a random variable quantifies the average level of uncertainty or information associated with the variable's potential...

an entropic force acting in a system is an emergent phenomenon resulting from the entire system's statistical tendency to increase its entropy, rather...

In thermodynamics, the interpretation of entropy as a measure of energy dispersal has been exercised against the background of the traditional view, introduced...

a measure of distance to normality. It is also known as negative entropy or syntropy. The concept and phrase "negative entropy" was introduced by Erwin...

entropy states that the probability distribution which best represents the current state of knowledge about a system is the one with largest entropy,...

introduction, with exercises, and extensive references.) Lai-Sang Young, "Entropy in Dynamical Systems" (pdf; ps), appearing as Chapter 16 in Entropy...

statement Carnot's theorem (thermodynamics) Carnot heat engine Introduction to entropy Clausius theorem at Wolfram Research Mortimer, R. G. Physical Chemistry...

Gibbs entropy from classical statistical mechanics to quantum statistical mechanics, and it is the quantum counterpart of the Shannon entropy from classical...

define a group of physical quantities, such as temperature, energy, and entropy, that characterize thermodynamic systems in thermodynamic equilibrium....

statistics, the Kullback–Leibler (KL) divergence (also called relative entropy and I-divergence), denoted D KL ( P ∥ Q ) {\displaystyle D_{\text{KL}}(P\parallel...

Rényi entropy is a quantity that generalizes various notions of entropy, including Hartley entropy, Shannon entropy, collision entropy, and min-entropy. The...

similar to the mathematics of statistical thermodynamics worked out by Ludwig Boltzmann and J. Willard Gibbs in the 1870s, in which the concept of entropy is...

second law may be formulated by the observation that the entropy of isolated systems left to spontaneous evolution cannot decrease, as they always tend...

In statistical mechanics, Boltzmann's entropy formula (also known as the Boltzmann–Planck equation, not to be confused with the more general Boltzmann...

High-entropy alloys (HEAs) are alloys that are formed by mixing equal or relatively large proportions of (usually) five or more elements. Prior to the...

and electrical engineering. A key measure in information theory is entropy. Entropy quantifies the amount of uncertainty involved in the value of a random...

representation, and entropy. Information is often processed iteratively: Data available at one step are processed into information to be interpreted and...

holes carried no entropy, it would be possible to violate the second law by throwing mass into the black hole. The increase of the entropy of the black hole...

phones to modems to hard disk drives and DVDs, rely on Shannon entropy. In thermodynamics (the branch of physics dealing with heat), entropy is popularly...

Research concerning the relationship between the thermodynamic quantity entropy and both the origin and evolution of life began around the turn of the...

Entropic gravity, also known as emergent gravity, is a theory in modern physics that describes gravity as an entropic force—a force with macro-scale homogeneity...

physics that deals with heat, work, and temperature, and their relation to energy, entropy, and the physical properties of matter and radiation. The behavior...

In classical thermodynamics, entropy (from Greek τρoπή (tropḗ) 'transformation') is a property of a thermodynamic system that expresses the direction...

In thermodynamics, the entropy of mixing is the increase in the total entropy when several initially separate systems of different composition, each in...

Differential entropy (also referred to as continuous entropy) is a concept in information theory that began as an attempt by Claude Shannon to extend the...

Entropy is one of the few quantities in the physical sciences that require a particular direction for time, sometimes called an arrow of time. As one...

H {\textstyle H} is the enthalpy of the system S {\textstyle S} is the entropy of the system T {\textstyle T} is the temperature of the system V {\textstyle...