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In [[classical mechanics]], the '''momentum''' of a point particle is the [[mass]] ''m'' of the part ...essed with respect to a reference frame. In most applications of classical mechanics this frame is fixed to the earth (a "laboratory frame"). [[Einstein]]'s th

* The [[characteristic state function]] in [[statistical mechanics]].

{{r|Quantum mechanics}}

...ctrum]]), as well as spectral analysis of radiation; elasticity; [[quantum mechanics]]; and many other areas of scientific research. ...tial differential equation (or PDE) of fundamental importance in [[quantum mechanics]].

* [[Fluid mechanics]]

The escape speed is a concept of mechanics which is related to gravity. For a small body being launched radially outwa

..., is an introduction to quantum mechanics for the layperson. See [[Quantum mechanics/Advanced]] for a more technical exposition.'' '''Quantum mechanics''' (from the [[Latin]] ''quantus'', "how much") is a theory in [[physics]]

....A. Quadling | coauthors=A.R.D. Ramsay | title=An Introduction to Advanced Mechanics | year=1964 | publisher=G. Bell and Sons | pages=102-103 }}

In [[quantum mechanics]], ''a''₀ appears as the maximum in the radial distribution as

{{r|Quantum mechanics}}

...s ''not'' have [[rest mass]].<ref>This is unexpected, because in classical mechanics linear momentum of a particle is proportional to the mass of the particle.< ...nger equation|wave equation]], which formed the basis of the new [[quantum mechanics]]. It took another year before [[Paul A.M. Dirac]]<ref>P.A.M. Dirac, Proc.

...biology''' has emerged as a discipline that aims to investigate [[Quantum mechanics|quantum]] phenomena&mdash;e.g., [[coherence]], [[tunneling]], [[Entanglemen ...of the cell and multicellular organism rests on the foundation of quantum mechanics. But not all known quantum phenomena can be seen to readily apply to livin

...Hilbert spaces play a fundamental role in the physical theory of [[quantum mechanics]]. The state (in the so-called [[Schrödinger picture]]) of a quantum mecha

...Continuity of the Gaseous and the Liquid States'', Studies in Statistical Mechanics XIV. J.L. Lebowitz , Ed., North Holland, Amsterdam (1988). (This book conta

...nal role-playing. Similarly, role-playing video games tend to conceal game mechanics, so that players devote little or no time to the calculation of statistics

...perhaps the most powerful tools of analysis in [[physics]] and [[classical mechanics]].<ref>{{cite book|author=Gerald J. Holton and Stephen G. Brush|title=Physi

...anding still, there is no translation, rotation or vibration. In [[quantum mechanics|quantum mechanical]] terms all possible motions are in their lowest-energy

{{r|Quantum mechanics}}

*{{Citation|author=Phillip Hall and Carl Peterson| title = Mechanics and Thermodynamics of Propulsion| edition = 2nd| publisher = Addison-Wesley

...''Schrödinger equation''' is one of the fundamental equations of [[quantum mechanics]] and describes the spatial and temporal behavior of quantum-mechanical sys ...Schrödinger equation because it is a fundamental ''postulate'' of quantum mechanics.