what is entropy ?

Description

https://www.thoughtco.com/definition-of-entropy-604458

What Is Entropy? – ThoughtCo
https://www.thoughtco.com/definition-of-entropy-604458
Key Takeaways: Entropy Entropy is a measure of the randomness or disorder of a system. The value of entropy depends on the mass of a system. It is denoted by the letter S and has units of joules per kelvin. Entropy can have a positive or negative value. According to the second law of thermodynamics, …

https://en.wikipedia.org/wiki/Entropy

Entropy – Wikipedia
https://en.wikipedia.org/wiki/Entropy
The following is a list of additional definitions of entropy from a collection of textbooks: a measure of energy dispersal at a specific temperature. a measure of disorder in the universe or of the availability of the energy in a system to do work. a measure of a system’s thermal energy per unit …

https://www.merriam-webster.com/dictionary/entropy

Entropy | Definition of Entropy by Merriam-Webster
https://www.merriam-webster.com/dictionary/entropy
Entropy definition is – a measure of the unavailable energy in a closed thermodynamic system that is also usually considered to be a measure of the system’s disorder, that is a property of the system’s state, and that varies directly with any reversible change in heat in the system and inversely with the temperature of the system; broadly : the degree of disorder or uncertainty in a system. How to use entropy in a sentence. Did You Know?

https://edu.rsc.org/feature/what-is-entropy/2020274.article

What is entropy? | Feature | RSC Education
https://edu.rsc.org/feature/what-is-entropy/2020274.article
Entropy is a thermodynamic property, like temperature, pressure and volume but, unlike them, it can not easily be visualised. Introducing entropy. The concept of entropy emerged from the mid-19th century discussion of the efficiency of heat engines. Generations of students struggled with Carnot’s cycle and various types of expansion of ideal and real gases, and never really understood why they were doing so.

https://study.com/academy/lesson/what-is-entropy-definition-law-formula.html

What is Entropy? – Definition, Law & Formula – Science …
https://study.com/academy/lesson/what-is-entropy-definition-law-formula.html
Entropy: the number of ways in which a system can be arranged ; Second Law of Thermodynamics: processes involving a cycle; the entropy will either stay the same or increase

https://en.wikipedia.org/wiki/Entropy_(classical_thermodynamics)

Entropy (classical thermodynamics) – Wikipedia
https://en.wikipedia.org/wiki/Entropy_(classical_thermodynamics)
In classical thermodynamics, entropy is a property of a thermodynamic system that expresses the direction or outcome of spontaneous changes in the system.

https://lawofthermodynamicsinfo.com/definition-of-entropy-in-thermodynamics/

What Is The Definition Of Entropy In Thermodynamics?

What is the definition of entropy in thermodynamics?

In solids, the molecules are properly arranged, which means it has less randomness, so the entropy of solids is least. In gases, the molecules move very fast throughout the container. It has more randomness which means it has more entropy. The entropy of liquids lies in between the solids and …

https://www.brighthubengineering.com/thermodynamics/4534-what-is-entropy/

What is Entropy? What is thermodynamic entropy? – Bright …
https://www.brighthubengineering.com/thermodynamics/4534-what-is-entropy/
Entropy is heat or energy change per degree Kelvin temperature. Entropy is denoted by ‘S’, while specific entropy is denoted by ‘s’ in all mathematical calculations. The property ‘entropy’ plays central role in the study of thermodynamics and it has been introduced via the concept of the working of the heat engine.

https://www.croix-rouge.fr/Actualite/3-millions-d-enfants-pauvres-en-France2/Les-enfants-premieres-victimes-de-la-precarite-1826

What is entropy? – Chem1
www.chem1.com/acad/webtext/thermeq/TE2.html
Entropy, however, measures not energy itself, but its dispersal amongst the various quantum states available to accept it, and these exist even in pure elements. It is apparent that entropies generally increase with molecular weight. For the noble gases, this is of course a direct reflection of the principle that translational quantum states are more closely packed in heavier molecules …

https://www.numpyninja.com/post/what-is-entropy-and-information-gain-how-are-they-used-to-construct-decision-trees

What is Entropy and Information Gain? How are they used to …
https://www.numpyninja.com/post/what-is-entropy-and-information-gain-how-are-they-used-to-construct-decision-trees
Entropy is the measures of impurity, disorder or uncertainty in a bunch of examples. Entropy controls how a Decision Tree decides to split the data. The below image shows impurity level of each set. Image by Author. If we have a set of K different values , then we can calculate the entropy using this formula: where, P(valuei) is the probability of getting the ith value when randomly selecting …