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...le physics]], '''rigidity''' <math>R</math> is a measure of the resistance of a particle to deflection by magnetic fields, defined as the particle's mome The concept of rigidity is derived from the motion of a charged particle within a [[magnetic field]]: two particles follow the sa ...

{{DISPLAYTITLE:''N''-body units}} | Unit of [[length]] (''R'') ...

{{Short description|Form of shear stress}} ...ity of a flow in a stream, to a velocity that relates shear between layers of flow. ...

...({{math|''v''}}) and [[angular speed]] ({{math|''ω''}}) on a spinning disc of radius {{math|''r''}}.]] ...eed and tangential speed are used interchangeably, and is measured in [[SI units]] as meters per second (m/s). ...

==Figure of merit== [[Figure of merit]] is given as ...

...the slowness of the medium ( in seismology, it refers to different layers of [[Earth]] exhibiting different [[Density|densities]]) Slowness = 1/Velocity ...

The '''magnetic diffusivity''' controls the rate of [[Magnetic diffusion|magnetic field diffusion]]. ...for the magnetic field]] is analogous to that of the [[viscosity]] for the velocity field, some authors<ref>{{cite book |last1=Somov |first1=Boris V. |title=Pl ...

{{Short description|Form of damping resulting from an object moving through a viscous fluid}} ...orce]] is modeled as a function of the [[volume]], shape, and [[velocity]] of an object traversing through a real [[fluid]] with [[viscosity]].<ref>Mecha ...

{{Short description|Constants describing characteristics of electrical motors}} ...force|back EMF]] constant''') are values used to describe characteristics of electrical motors. ...

...s an [[axial compressor]], but it operates in the reverse, converting flow of the fluid into rotating [[mechanical energy]]. ...nes accelerates and adds swirl to the fluid and directs it to the next row of turbine blades mounted on a turbine rotor. ...

...nt observed at an RDE, in particular, the Levich equation gives the height of the [[Sigmoid function|sigmoidal]] wave observed in rotating disk voltammet ...In this form of the equation, the constant with a value of 0.620 has units of rad^-1/2. ...

{{Short description|Motion of charged particles}} ...orbit of a particle with speed '''v''', which is the classical trajectory of a charged particle (here positive charge) under a uniform magnetic field '' ...

{{Short description|Rotation of a vehicle about its vertical axis}} ...rigid body is the [[angular velocity]] of this rotation, or rate of change of the heading angle when the aircraft is horizontal. It is commonly measured ...

...ournal |last=Fritz |first=Tobias |date=June 2013 |title=Velocity polytopes of periodic graphs and a no-go theorem for digital physics |url=https://linkin The tile argument appears in Weyl's 1949 book ''Philosophy of Mathematics and Natural Sciences'', where he writes: ...

...p=678}} The Dryden model treats the linear and angular velocity components of continuous gusts as spatially varying [[stochastic process]]es and specifie ...plication of Statistical Concepts to the Buffeting Problem|journal=Journal of the Aeronautical Sciences|year=1952|volume=19|issue=12|pages=793–800|doi=10 ...

This article summarizes [[equation]]s in the theory of [[fluid mechanics]]. ...the component of flux passing through the surface, multiplied by the area of the surface (see [[dot product]]). For this reason flux represents physical ...

{{Short description|System adjusting the output of electric generators}} ...tors and loads; generators must be controlled to maintain stable operation of the system.]] ...

...[[event (particle physics)|events]] detected (''dN'') in a certain period of time (''dt'') to the [[Cross section (physics)|cross-section]] (''&sigma;'' |chapter=Concept of luminosity ...

{{Short description|Speed and direction of a motion}} {{About|velocity in physics}} ...

...ate of change of [[volumetric flow-rate]] with time. The base [[SI]] units of inertance are {{nowrap|kg m⁻⁴}} or {{nowrap|Pa s² m<s The inertance of a tube is given by: ...