PhysicalSystemData

PhysicalSystemData["name","property"]
gives the value of the specified property for the physical system .

PhysicalSystemData[{"name1","name2",},"property"]
gives a list of property values for the specified physical system names.

PhysicalSystemData["name", "property", annotation]
gives the specified annotation associated with the property.

DetailsDetails

  • The specified in PhysicalSystemData can be an Entity, EntityClass, or canonical name.
  • The specified should be an EntityProperty, EntityPropertyClass, canonical name, or list thereof.
  • PhysicalSystemData[] gives a list of all physical system entities.
  • PhysicalSystemData["Properties"] gives a list of available properties.
  • Properties that do not apply or are not known in a particular case are indicated by Missing[].
  • Properties include:
  • "Action"action
    "AlternateNames"alternate names
    "BluePropagatorMomentumRepresentation"blue propagator momentum representation
    "BluePropagatorPositionRepresentation"blue propagator position representation
    "BoundStateWaveFunctionMomentumRepresentation"bound state wave function momentum representation
    "BoundStateWaveFunctionMomentumRepresentationAbsoluteValueSquared"bound state wave function momentum representation absolute value squared
    "BoundStateWaveFunctionPositionRepresentation"bound state wave function position representation
    "BoundStateWaveFunctionPositionRepresentationAbsoluteValueSquared"bound state wave function position representation absolute value squared
    "CanonicalMomenta"canonical momenta
    "Classes"classes
    "ContinuousEnergyEigenvalue"continuous energy eigenvalue
    "DegreesOfFreedom"degrees of freedom
    "DiscreteEnergyEigenvalue"discrete energy eigenvalue
    "ElectricChargeDensity"electric charge density
    "ElectricCurrentDensity"electric current density
    "ElectricDipoleMoment"electric dipole moment
    "ElectricField"electric field
    "ElectricMonopoleMoment"electric monopole moment
    "ElectricPotential"electric potential
    "ElectricQuadrupoleMoment"electric quadrupole moment
    "EquationOfState"equation of state
    "EquationsOfMotion"equations of motion
    "EquationsOfMotionSolution"solution of the equations of motion
    "GravitationalField"gravitational field
    "GravitationalPotential"gravitational potential
    "HamiltonianEquationsOfMotion"Hamiltonian equations of motion
    "HamiltonianEquationsOfMotionSolution"solution of the Hamiltonian equations of motion
    "HamiltonianFunction"Hamiltonian function
    "HamiltonianOperator"Hamiltonian operator
    "HamiltonianOperatorMomentumRepresentation"Hamiltonian operator momentum representation
    "HamiltonianOperatorPositionRepresentation"Hamiltonian operator position representation
    "InternalEnergy"internal energy
    "IsobaricHeatCapacity"isobaric heat capacity
    "IsochoricHeatCapacity"isochoric heat capacity
    "KineticEnergy"kinetic energy
    "Lagrangian"Lagrangian
    "MagneticFluxDensity"magnetic flux density
    "MagneticMoment"magnetic moment
    "MagneticScalarPotential"magnetic scalar potential
    "MagneticVectorPotential"magnetic vector potential
    "MassDensity"mass density
    "Name"name
    "Period"period
    "PotentialEnergy"potential energy
    "PropagatorMomentumRepresentation"propagator momentum representation
    "PropagatorPositionRepresentation"propagator position representation
    "ScatteringStateWaveFunctionMomentumRepresentation"scattering state wave function momentum representation
    "ScatteringStateWaveFunctionPositionRepresentation"scattering state wave function position representation
    "TimeDependentSchroedingerEquationMomentumRepresentation"timedependent Schrödinger equation momentum representation
    "TimeDependentSchroedingerEquationPositionRepresentation"timedependent Schrödinger equation position representation
    "TimeIndependentSchroedingerEquationMomentumRepresentation"timeindependent Schrödinger equation momentum representation
    "TimeIndependentSchroedingerEquationPositionRepresentation"timeindependent Schrödinger equation position representation
    "Variables"variables
  • Some properties are available for PhysicalSystemData as a whole and can be given using the form PhysicalSystemData["property"]. Such properties include:
  • "Entities"all available entities
    "EntityCount"total number of available entities
    "Classes"all available entity classes
    "EntityClassCount"total number of available entity classes
    "SampleEntities"list of sample entities
    "SampleEntityClasses"list of sample entity classes
    "EntityCanonicalNames"list of all entity canonical names
    "PropertyCanonicalNames"list of all property canonical names
    "EntityClassCanonicalNames"list of all entity class canonical names
    "RandomEntities"pseudorandom sample entities
    {"RandomEntities",n}n pseudorandom entities
    "RandomEntityClasses"pseudorandom sample entity classes
    {"RandomEntityClasses",n}n pseudorandom entity classes
  • The following annotations can be used in the third argument of PhysicalSystemData["name","property",annotation]:
  • "Qualifiers"the list of possible qualifiers for the property
    "QualifierValues"the list of possible values that can be given to each qualifier
    "DefaultQualifierValues"the list of default values for the property's qualifiers
    "Description"a brief textual description of the property
    "Definition"a detailed textual definition of the property
    "Source"source information for the property
    "Date"the date associated with the entity-property value (if any)
    "PhysicalQuantity"the physical quantity associated with the entity-property value
    "Unit"the unit associated with the entity-property value
    "EntityAssociation"an Association of entities and entity-property values
    "PropertyAssociation"an Association of properties and entity-property values
  • If a function is provided as an annotation, it will be used to aggregate the result data. Typical aggregation functions include:
  • Minthe minimum value
    Maxthe maximum value
    Meanthe mean value
    Commonestthe most frequently occuring value
    Medianthe median value
    Totalreturns the total
    Lengththe number of elements

ExamplesExamplesopen allclose all

Basic Examples  (5)Basic Examples  (5)

Use Ctrl+Equal for entity discovery:

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Find a list of sample entities for physical systems:

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Find properties of a physical system:

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Find a list of sample entity classes for physical systems:

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Make a grid of eletric conductors and their charge density:

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Introduced in 2014
(10.0)