represents a variable with the label var and the corresponding physical quantity "pq".
represents the unlabeled physical quantity "pq".
- Supported physical quantities include both physical and chemical quantities such as "Length", "ElectricCurrent", and "ChemicalPotential", as well as mathematical and financial quantities such as "Angle" and "Money".
- Combinations of physical quantities are also supported, as well as "PhysicalQuantity" entities.
- pq can also be specified using a list of ordered dimension pairs (such as returned by QuantityVariableDimensions), indicating the magnitude of the pq in that dimension.
- Information of a QuantityVariable may include the following properties:
"Identifier" identifier associated with quantity variable "PhysicalQuantity" physical quantity "UnitDimensions" physical dimensions "CanonicalUnit" canonical units
Examplesopen allclose all
Basic Examples (2)
A QuantityVariable represents a variable associated with a particular physical quantity:
QuantityVariable can be used to specify values in FormulaData:
QuantityVariable objects can be constructed using free-form input ():
Create a QuantityVariable using a combination of physical quantities:
Use a list of unit dimensions to set a physical quantity instead:
Properties & Relations (8)
QuantityVariableIdentifier can be used to extract the symbol from a QuantityVariable:
The physical quantity can be recovered with QuantityVariablePhysicalQuantity:
FormulaData returns QuantityVariable objects:
The physical quantities used within QuantityVariable can be used to search for formulas using FormulaLookup:
Any symbol can be used with any physical quantity without restriction:
QuantityVariable can be used in symbolic results:
Use QuantityVariable in functions such as DSolve:
"PhysicalQuantity" entities can be used as arguments for QuantityVariable:
Use the ResourceFunction "PhysicalQuantityLookup" to find physical quantities and quantity variables from units and quantities:
Wolfram Research (2014), QuantityVariable, Wolfram Language function, https://reference.wolfram.com/language/ref/QuantityVariable.html (updated 2019).
Wolfram Language. 2014. "QuantityVariable." Wolfram Language & System Documentation Center. Wolfram Research. Last Modified 2019. https://reference.wolfram.com/language/ref/QuantityVariable.html.
Wolfram Language. (2014). QuantityVariable. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/QuantityVariable.html