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Entity > Abstract > Class > Relation > Function > FunctionQuantity > IlluminanceMeasure > Lux
Up: IlluminanceMeasure, SystemeInternationalUnit

Lux
subjectfact 
Luxdocumentation SI IlluminanceMeasure. Symbol: lx. It is the amount of illumination provided when one Lumen is evenly distributed over an area of 1 square Meter. This is also equivalent to the illumination that would exist on a surface all points of which are one Meter from a point source of one Candela. Lux = lm/m^2 = m^(-2)*cd2001-11-30 13:34:37.0
is an instance of IlluminanceMeasure2001-11-30 13:34:37.0
is an instance of SystemeInternationalUnit2001-11-30 13:34:37.0
UnitOfMeasurehas axiom 
(=>
    (and
       (equal (MeasureFn ?NUMBER ?UNIT) ?QUANT)
       (subclass ?UNIT ?QUANTTYPE)
       (not (equal ?QUANTTYPE UnitOfMeasure)))
    (subclass ?QUANT ?QUANTTYPE))
2001-11-30 13:35:31.0
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)))))
2001-11-30 13:35:31.0
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)))))
2001-11-30 13:35:31.0
is second domain of MeasureFn2001-11-30 13:35:31.0
Functionis first domain of AssignmentFn2001-11-30 13:34:18.0
is first domain of closedOn2001-11-30 13:34:18.0
is first domain of range2001-11-30 13:34:18.0
is first domain of rangeSubclass2001-11-30 13:34:18.0
PhysicalQuantityis partitioned into ConstantQuantity, FunctionQuantity2001-11-30 13:34:58.0
Classis third domain of domain2001-11-30 13:33:51.0
is third domain of domainSubclass2001-11-30 13:33:51.0
Abstractis disjoint from Physical2001-11-30 13:33:32.0