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Encyclopedia > Statistical physics

Statistical physics, one of the fundamental theories of physics, uses methods of statistics in solving physical problems. It can describe a wide variety of fields with an inherently stochastic nature. Examples include problems such as nuclear reactions, and topics in the fields of biology, chemistry, neurology and even some social sciences such as sociology. A fundamental is something basic and important which other things are built upon. ... The word theory has a number distinct meanings depending on the context. ... The willingness to question previously held truths and search for new answers resulted in a period of major scientific advancements, now known as the Scientific Revolution. ... Statistics is a type of data analysis which practice includes the planning, summarizing, and interpreting of observations of a system possibly followed by predicting or forecasting of future events based on a mathematical model of the system being observed. ... The word probability derives from the Latin probare (to prove, or to test). ... In nuclear physics, a nuclear reaction is a process in which two nuclei or nuclear particles collide, to produce products different to the initial products. ... Main articles: Life All organisms (viruses not included) consist of cells, which in turn, are based on a common carbon-based biochemistry. ... Chemistry (in Greek: χημεία) is the science of matter and its interactions with energy and itself (see physics, biology). ... Neurology is the branch of medicine dealing with the nervous system and its disorders. ... Social interactions of people and their consequences are the subject of sociology studies. ...


The term statistical physics encompasses statistical approaches to classical mechanics and quantum mechanics. Statistical mechanics is then often used as a synonym. When the context requires a distinction, one uses the terms classical statistical mechanics and quantum statistical mechanics. Statistics is a type of data analysis which practice includes the planning, summarizing, and interpreting of observations of a system possibly followed by predicting or forecasting of future events based on a mathematical model of the system being observed. ... In physics, Classical mechanics is one of the two major sub-fields of study in the science of mechanics, which is concerned with the motions of bodies, and the forces that cause them. ... Fig. ... Statistical mechanics is the application of statistics, which includes mathematical tools for dealing with large populations, to the field of mechanics, which is concerned with the motion of particles or objects when subjected to a force. ... ConTEXT is a freeware text editor directed at programmers. ...


A statistical approach can work well in classical systems when the number of degrees of freedom (and so the number of variables) is so large that exact solution is not possible, or not really useful. Statistical mechanics can also describe work in non-linear dynamics, chaos theory, thermal physics, fluid dynamics (particularly at low Knudsen numbers), or plasma physics. The phrase degrees of freedom is used in three different branches of science: in physics and physical chemistry, in mechanical and aerospace engineering, and in statistics. ... Chaos theory, in mathematics and physics, deals with the behaviour of certain nonlinear dynamical systems that (under certain conditions) exhibit the phenomenon known as chaos, most famously characterised by sensitivity to initial conditions (see butterfly effect). ... Chaos theory, in mathematics and physics, deals with the behavior of certain nonlinear dynamical systems that (under certain conditions) exhibit the phenomenon known as chaos, most famously characterised by sensitivity to initial conditions (see butterfly effect). ... This article or section should be merged with Fluid mechanics Fluid dynamics is the study of fluids (liquids and gases) in motion, and the effect of the fluid motion on fluid boundaries, such as solid containers or other fluids. ... The Knudsen number (Kn) is the ratio of the molecular mean free path length to a representative physical length scale. ... A Plasma lamp In physics and chemistry, a plasma is an ionized gas, and is usually considered to be a distinct phase of matter. ...


Although some problems in statistical physics can be solved analytically using approximations and expansions, most current research utilizes the large processing power of modern computers to simulate or approximate solutions. A common approach to statistical problems is to use a Monte Carlo simulation, to yield insight into the dynamics of a complex system. One of the recent hot topics on the field is complex network. Monte Carlo methods are algorithms for solving various kinds of computational problems by using random numbers (or more often pseudo-random numbers), as opposed to deterministic algorithms. ... Complex networks are the backbone of a complex system. ...


  Results from FactBites:
 
Statistical physics - Wikipedia, the free encyclopedia (244 words)
Statistical physics, one of the fundamental theories of physics, uses methods of statistics in solving physical problems.
A statistical approach can work well in classical systems when the number of degrees of freedom (and so the number of variables) is so large that exact solution is not possible, or not really useful.
Although some problems in statistical physics can be solved analytically using approximations and expansions, most current research utilizes the large processing power of modern computers to simulate or approximate solutions.
  More results at FactBites »

 
 

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