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Entity > Abstract > Class > Relation > Function > FunctionQuantity > LuminosityIntensityMeasure > Candela

Candela
subject			fact

Candela	documentation SI LuminosityIntensityMeasure. Symbol: cd. It is one of the base units in SI, and it is currently defined as follows: the Candela is the luminous intensity, in a given direction, of a source that emits monochromatic radiation of frequency 540*10^12 Hertz and that has a radiant intensity in that direction of 1/683 Watt per Steradian
	is an instance of LuminosityIntensityMeasure
	is an instance of SystemeInternationalUnit
UnitOfMeasure	has axiom (=> (and (equal (MeasureFn ?NUMBER ?UNIT) ?QUANT) (subclass ?UNIT ?QUANTTYPE) (not (equal ?QUANTTYPE UnitOfMeasure))) (subclass ?QUANT ?QUANTTYPE))
	has axiom (=> (and (instance ?FUNCTION RelationExtendedToQuantities) (instance ?FUNCTION BinaryFunction) (instance ?NUMBER1 RealNumber) (instance ?NUMBER2 RealNumber) (equal (AssignmentFn ?FUNCTION ?NUMBER1 ?NUMBER2) ?VALUE)) (forall (?UNIT) (=> (instance ?UNIT UnitOfMeasure) (equal (AssignmentFn ?FUNCTION (MeasureFn ?NUMBER1 ?UNIT) (MeasureFn ?NUMBER2 ?UNIT)) (MeasureFn ?VALUE ?UNIT)))))
	has axiom (=> (and (instance ?REL RelationExtendedToQuantities) (instance ?REL BinaryRelation) (instance ?NUMBER1 RealNumber) (instance ?NUMBER2 RealNumber) (holds ?REL ?NUMBER1 ?NUMBER2)) (forall (?UNIT) (=> (instance ?UNIT UnitOfMeasure) (holds ?REL (MeasureFn ?NUMBER1 ?UNIT) (MeasureFn ?NUMBER2 ?UNIT)))))
	is second domain of MeasureFn
Function	is first domain of AssignmentFn
	is first domain of closedOn
	is first domain of range
	is first domain of rangeSubclass
PhysicalQuantity	is partitioned into ConstantQuantity, FunctionQuantity
Class	is third domain of domain
	is third domain of domainSubclass
Abstract	is disjoint from Physical