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Moment (physics) print that page


In physics , the term moment " can refer to many different concepts: Moment of force (often just moment ) is the tendency of a force to twist or rotate an object; see the article torque for details. This is an important, basic concept in engineering and physics . A moment is valued

Spin (physics) print that page

In quantum mechanics and particle physics , spin is a fundamental characteristic property of elementary particles , composite particles ( hadrons ), and atomic nuclei . [ note 1 ] All elementary particles of a given kind have the same spin quantum number , an important part of a particle | 2011/10/3 1:15:00

Dynamical simulation print that page

In Computer science , a program called a Physics engine is used to model the behaviors of objects in space. These engines allow simulation of the way bodies of many types are affected by a variety of physical stimuli. They are also used to create Dynamical simulations without having to know | 2011/5/24 4:31:35

Statistical ensemble (mathematical physics) print that page

In mathematical physics , especially as introduced into statistical mechanics and thermodynamics by J. Willard Gibbs in 1878, an ensemble (also statistical ensemble or thermodynamic ensemble ) [ 1 ] [ 2 ] is an idealization consisting of a large number of mental copies (sometimes infinitely | 2011/4/14 23:32:32

Reaction (physics) print that page

of describing the combined motion of both objects (ignoring all other celestial bodies for the moment ) is to say that they both orbit around the center of mass of the combined system. Consider a mass hanging at the end of a non-stretchable cable attached to the ceiling of a laboratory. The | 2011/9/14 10:10:14

Causality (physics) print that page

equal probability of stopping at each position. [ edit ] Various concepts of cause and effect in physics In physics it is useful to interpret certain terms of a physical theory as causes and other terms as effects. Thus, in classical (Newtonian) mechanics a cause may be represented by | 2011/8/9 3:03:46

List of elementary physics formulae print that page

topic, reduce to a number of idealized special cases. 3. Formulae which frequently appear in physics literature, in a small addition some perhaps less common formulae. 4. Level of study is typically that of advanced school/ introductory degree level Physics , and beyond. 5. For generality | 2011/9/28 16:16:41

List of unsolved problems in physics print that page


This is a list of some of the major unsolved problems in physics . Some of these problems are theoretical , meaning that existing theories seem incapable of explaining a certain observed phenomenon or experimental result. The others are experimental , meaning that there is a difficulty in

Digital physics print that page

In physics and cosmology , digital physics is a collection of theoretical perspectives based on the premise that the universe is, at heart, describable by information , and is therefore computable . Therefore, the universe can be conceived as either the output of a computer program or | 2011/4/25 1:16:44

Defining equation (physics) print that page

In physics , defining equations are equations that define new quantities in terms of base quantities [ 1 ] . This article uses the current SI system of units , not natural or characteristic units . Contents 1 Treatment of vectors 2 Classical mechanics 2.1 Mass and inertia | 2011/10/5 16:01:22