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Lecture

Statistical Thermodynamics: Entropy and Forces

In course

CH-242(b): Statistical mechanics for chemistry

Ce cours construit la base théorique universelle permettant de comprendre les systèmes à grand nombre de particules. Les méthodes introduites sont utilisées pour éclairer de nombreux phénomènes à travers la chimie. ...

Description

This lecture covers the concepts of entropy, forces, and statistical thermodynamics, focusing on the relationship between energy, temperature, and equilibrium in physical systems. The instructor explains the calculation of entropy and forces in different scenarios, emphasizing the importance of understanding these concepts in the context of thermodynamics and statistical mechanics.

Instructors (2)

Andreas Osterwalder

EDUCATION: 2002: Dr.sc.nat. (ETH Zurich) 1998: Dipl.Chem. (ETH Zurich) ACADEMIC POSITIONS: since 2015: Senior Scientist at EPFL 2009-2015: SNSF-funded Professor at EPFL 2005-2009: Group leader, Fritz-Haber-Institute of the Max-Planck-Society in Berlin (Department of Molecular Physics under Prof. G. Meijer) 2002-2005: Postdoctoral Fellow at UC Berkeley (Group of Prof. D.M.Neumark) 1998-2002: PhD Student at ETHZ (Group of Prof. F.Merkt)

Christopher Scott Reilly

Official source

Ontological neighbourhood

Physics

Thermodynamics: Statistical mechanics

Related concepts (32)

Thermodynamics

Thermodynamics is a branch of physics that deals with heat, work, and temperature, and their relation to energy, entropy, and the physical properties of matter and radiation. The behavior of these quantities is governed by the four laws of thermodynamics which convey a quantitative description using measurable macroscopic physical quantities, but may be explained in terms of microscopic constituents by statistical mechanics.

Statistical mechanics

In physics, statistical mechanics is a mathematical framework that applies statistical methods and probability theory to large assemblies of microscopic entities. It does not assume or postulate any natural laws, but explains the macroscopic behavior of nature from the behavior of such ensembles. Sometimes called statistical physics or statistical thermodynamics, its applications include many problems in the fields of physics, biology, chemistry, and neuroscience.

Laws of thermodynamics

The laws of thermodynamics are a set of scientific laws which define a group of physical quantities, such as temperature, energy, and entropy, that characterize thermodynamic systems in thermodynamic equilibrium. The laws also use various parameters for thermodynamic processes, such as thermodynamic work and heat, and establish relationships between them. They state empirical facts that form a basis of precluding the possibility of certain phenomena, such as perpetual motion.

Second law of thermodynamics

The second law of thermodynamics is a physical law based on universal experience concerning heat and energy interconversions. One simple statement of the law is that heat always moves from hotter objects to colder objects (or "downhill"), unless energy in some form is supplied to reverse the direction of heat flow. Another definition is: "Not all heat energy can be converted into work in a cyclic process." The second law of thermodynamics in other versions establishes the concept of entropy as a physical property of a thermodynamic system.

Entropy (statistical thermodynamics)

The concept entropy was first developed by German physicist Rudolf Clausius in the mid-nineteenth century as a thermodynamic property that predicts that certain spontaneous processes are irreversible or impossible. In statistical mechanics, entropy is formulated as a statistical property using probability theory. The statistical entropy perspective was introduced in 1870 by Austrian physicist Ludwig Boltzmann, who established a new field of physics that provided the descriptive linkage between the macroscopic observation of nature and the microscopic view based on the rigorous treatment of large ensembles of microstates that constitute thermodynamic systems.

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