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#REDIRECT [[Finite strain theory#Deformation gradient tensor]] [[Category:Tensor physical quantities]] ...

#redirect[[Moment of inertia#Inertia tensor]] [[Category:Tensor physical quantities]] ...

[[Category:Tensor physical quantities]] ...

#REDIRECT [[Strain (mechanics)#Strain tensor]] [[Category:Tensor physical quantities]] ...

...nsors are usually the [[Riemann tensor]], the [[Weyl tensor]], the [[Ricci tensor]] and tensors formed from these by the operations of taking [[Duality (math The Riemann tensor is a [[multilinear operator]] of fourth rank acting on [[tangent vector]]s. ...

...us to a [[scalar (physics)|scalar]]. Both are [[physical quantity|physical quantities]] which assume a single value which is invariant under [[proper rotation]]s ...tisymmetric tensor of order 2 (and vice versa). The tensor is an invariant physical quantity under a coordinate inversion, while the pseudovector is not invari ...

...e absence of any physical theory, but in general relativity they acquire a physical interpretation as geometric manifestations of the [[gravitational field]]. # The Einstein tensor must match the [[energy-momentum density|stress-energy tensor]] for the scalar field, which in the simplest case, a ''minimally coupled m ...

{{short description|One-dimensional physical quantity}} ...lar quantities''' or simply '''scalars''' are [[Physical quantity|physical quantities]] that can be described by a single pure number (a [[Scalar (mathematics)|' ...

...ress–energy tensor contains the negative of the classical [[Maxwell stress tensor]] that governs the electromagnetic interactions. The electromagnetic stress–energy tensor in the [[International System of Quantities]] (ISQ), which underlies the [[SI]], is<ref name="WheelerEtAl"/> ...

{{Short description|Type of observable in a physical system}} ...Invariance, as a broader term, also applies to the no change of form of [[physical law]]s under a transformation, and is closer in scope to the [[Invariant (m ...

{{Short description|Agreed-upon meaning of a physical quantity being positive or negative}} ...here the choice of sign is arbitrary. "Arbitrary" here means that the same physical system can be correctly described using different choices for the signs, as ...

...al theories of gravitation]], such as [[general relativity]], the '''tidal tensor''' represents The tidal tensor represents the relative acceleration due to gravity of two test masses sepa ...

...a perfect gas can be thought of as a special case of a perfect fluid. In [[physical cosmology|cosmology]], fluid solutions are often used as [[cosmological mod The [[stress–energy tensor]] of a relativistic fluid can be written in the form<ref>{{cite journal|las ...

...)|mathematical number]] ([[dimensionless]]) or a [[scalar (physics)|scalar physical quantity]] (with [[unit of measurement|units]]). In a physical context, scalar fields are required to be independent of the choice of refe ...

==Physical motivation== ...] is important in [[deriving the Schwarzschild solution]] and deducing the physical consequences of this symmetry (such as the nonexistence of gravitational ra ...

* [[Field strength tensor]] [[Category:Physical quantities]] ...

...lue and kg is the unit symbol (for [[kilogram]]). [[Vector quantity|Vector quantities]] have, besides numerical value and unit, direction or orientation in space ...hysical quantities are organized in a dimensional system built upon [[base quantities]], each of which is regarded as having its own dimension. ...

...icle consists of tables outlining a number of [[physical quantity|physical quantities]]. ...l quantities]]. Derived quantities can be expressed in terms of the [[base quantities]]. ...

However, in a Lorentzian manifold, we have a [[metric tensor]], which picks out a preferred vector field among the vector fields which a ==Physical interpretation== ...

...}</math> of this manifold and associated quantities such as the [[Einstein tensor]] <math>G^{ab}</math>, are well-defined. In general relativity, they can b ...gnetic field by defining an [[electromagnetic tensor|electromagnetic field tensor]] <math>F_{ab}</math> on our Lorentzian manifold. To be classified as an e ...