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...law]]s under a transformation, and is closer in scope to the [[Invariant (mathematics)|mathematical definition]]. Invariants of a system are deeply tied to the s ...heories are expressed in terms of their [[symmetry in physics|symmetries]] and invariants. ...

{{Short description|Mnemonic for understanding orientation of vectors in 3D space}} ...determine the direction of the [[cross product]] of two [[Euclidean vector|vectors]], as well as to establish the direction of the force on a [[Electric curre ...

...tion). Note the projection of {{math|'''v'''}} along {{math|''d'''''l'''}} and curl of {{math|'''v'''}} may be in the negative sense, reducing the circula In physics, '''circulation''' is the [[line integral]] of a vector field around a clos ...

...learning tool was designed by inventor-designer Steve Baer, his wife Holly and others. ...Pelletier and Paul Hildebrandt. To create the "balls," or nodes, Pelletier and Hildebrandt invented a system of 62 hydraulic pins that came together to fo ...

...n)|interference]], [[diffraction]], [[Polarization (waves)|polarization]], and other phenomena for which the ray approximation of [[geometric optics]] is ...that it is more physical than [[geometric]] or [[ray (optics)|ray]] optics and not that it is an exact physical theory.<ref name="Ufimtsev2007">{{cite boo ...

...uantified as ''m''{{=}}''n''{{nbsp}}kg, where ''n'' is the numerical value and kg is the unit symbol (for [[kilogram]]). ...expressed as the product of a ''numerical value'' {''Z''} (a pure number) and a unit [''Z'']: ...

In [[physics]], the '''algebra of physical space''' ('''APS''') is the use of the [[Clif ...construct a compact, unified and geometrical formalism for both classical and quantum mechanics. ...

...six parameters in total).<ref name=Sciavicco>{{cite book |title=Modelling and control of robot manipulators |author=Lorenzo Sciavicco, Bruno Siciliano |c ...dy remains constant in time regardless of external [[force]]s or [[Moment (physics)|moments]] exerted on it. A rigid body is usually considered as a [[continu ...

In [[physics]] and [[engineering]], '''mass [[flux]]''' is the [[Mass flow rate|rate of mass f is the mass current (flow of mass {{mvar|m}} per unit time {{mvar|t}}) and {{mvar|A}} is the area through which the mass flows. ...

{{short description|Expression frequently encountered in mathematical physics, generalization of Laplace's equation}} ...quently seen in physics. The equation is named after French mathematician and physicist [[Siméon Denis Poisson]].<ref>{{citation |title=Glossary of Geolo ...

...mb|300px|Plot of a two-dimensional slice of the gravitational potential in and around a uniform spherical body. The [[inflection point]]s of the cross-sec ...to the [[electric potential]] with [[mass]] playing the role of [[charge (physics)|charge]]. The reference point, where the potential is zero, is by conventi ...

{{Short description|Physical quantities taking values at each point in space and time}} ...humb|right|Illustration of the electric field surrounding a positive (red) and a negative (blue) charge.]] ...

...orce calculations of disordered point-charge systems is provided by Kolafa and Perram.<ref> ...''unit cell''. One such cell is chosen as the "central cell" for reference and the remaining cells are called ''images''. ...

...an is 50&nbsp;km from the starting point after having traveled (by walking and by train) for one hour. This, by definition, is 50&nbsp;km/h, which sugges ...ehave. (See [[Relativity of simultaneity#The train-and-platform|The train-and-platform thought experiment]].) To recognize that this [[classical mechanic ...

...and '''stiffness tensor'''. Common symbols include <math>\mathbf{C}</math> and <math>\mathbf{Y}</math>. ...er indices denote [[Covariance and contravariance of vectors|contravariant and covariant components]], respectively, though the distinction can be ignored ...

...tal force is always [[orthogonality|orthogonal]] to the motion of the body and towards the fixed point of the instantaneous [[osculating circle|center of ...ce Hall}}</ref><ref name=Tipler0>{{cite book |title=Physics for scientists and engineers |page=129 |author1=Paul Allen Tipler |author2=Gene Mosca |url=htt ...

{{Short description|Ways of writing certain laws of physics}} ...inertial coordinate system, and also provide a way to translate the fields and forces from one frame to another. However, this is not as general as [[Maxw ...

{{about|the concept of flux in natural science and mathematics}} ...low of a substance or property. In [[vector calculus]] flux is a [[Scalar (physics)|scalar]] quantity, defined as the [[surface integral]] of the perpendicula ...

In [[physics]], a '''parity transformation''' (also called '''parity inversion''') is th It can also be thought of as a test for [[Chirality (physics)|chirality]] of a physical phenomenon, in that a parity inversion transform ...

{{Short description|Equation in physics}} ...romagnetic wave]]s generated by nonzero source [[electric charge|charge]]s and [[electric current|currents]]. The source terms in the wave equations make ...