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Entropie
Mesure du désordre d’un système (tout système isolé tend à se désorganiser). Autrement réfléchi, il peut s’agir du nombre de configurations possibles que peut adopter un système et donc, d’une mesure de son incertitude.
What Is Entropy? A Measure of Just How Little We Really Know. | Quanta Magazine
Zack Savitskyquantamagazine.orgSince Boltzmann’s entropy measure is not about the dispersion of heat per se, but the evolving spatial configuration of a many-particle system’s components, we may call it statistical entropy, or configurational entropy.
Bobby Azarian • The Romance of Reality: How the Universe Organizes Itself to Create Life, Consciousness, and Cosmic Complexity
The second law of thermodynamics states that the entropy of closed physical systems always tends to increase, meaning that systems march from order to disorder. Think of dropping a dash of ink into a glass of clear water. The initial state, the one in which the drop of ink is localized in a gorgeous swirl, is information-rich. There are few ways
... See moreCesar Hidalgo • Why Information Grows: The Evolution of Order, from Atoms to Economies
The total amount of free energy in the universe must decrease with time. The total amount of thermal entropy in the universe must increase with time.
Bobby Azarian • The Romance of Reality: How the Universe Organizes Itself to Create Life, Consciousness, and Cosmic Complexity
“Entropy refers to an average of (physical) states, information to a particular (physical) state.”9
Cesar Hidalgo • Why Information Grows: The Evolution of Order, from Atoms to Economies
the steady state of out-of-equilibrium systems minimizes the production of entropy.6
Cesar Hidalgo • Why Information Grows: The Evolution of Order, from Atoms to Economies
One famous quantity that nature strives to maximize is entropy, which loosely speaking measures how messy things are. The second law of thermodynamics states that entropy tends to increase until it reaches its maximum possible value.
Max Tegmark • Life 3.0
The laws which govern how much energy is available are called the laws of thermodynamics and involve a concept called entropy for irreversible thermodynamic processes.