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Entity > Abstract > Class > Relation > Function > FunctionQuantity > EnergyMeasure > ElectronVolt
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ElectronVolt comparison table
Subject be first domain of be second domain of documentation have axiom be third domain of is a kind of is an instance of
EnergyMeasurerangeSubclassSubtractionFnA FunctionQuantity is a Function that maps from one or more instances of ConstantQuantity to another instance of ConstantQuantity. For example, the velocity of a particle would be represented by a FunctionQuantity mapping values of time (which are ConstantQuantities) to values of distance (also ConstantQuantities). Note that all instances of FunctionQuantity are Functions with a fixed arity. Note too that all elements of the range of a FunctionQuantity have the same physical dimension as the FunctionQuantity itself
(<=> 
(instance ?ABS Abstract)
(not
(exists (?POINT)
(or
(located ?ABS ?POINT)
(existant ?ABS ?POINT)))))
domainSubclassFunctionQuantity 
UnitOfMeasureSubtractionFnMeasureFnA standard of measurement for some dimension. For example, the Meter is a UnitOfMeasure for the dimension of length, as is the Inch. There is no intrisic property of a UnitOfMeasure that makes it primitive or fundamental; rather, a system-of-units (e.g. SystemeInternationalUnit) defines a set of orthogonal dimensions and assigns units for each
(=>
(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)))))
 PhysicalQuantity 
ElectronVoltSubtractionFnMeasureFnThe ElectronVolt is an EnergyMeasure. Symbol: eV. It is the kinetic energy acquired by an electron in passing through a potential difference of 1 Volt in a vacuum
(equal
(MeasureFn ?NUMBER ElectronVolt)
(MeasureFn (MultiplicationFn ?NUMBER 1.60217733E-19) Joule))
domainSubclass UnitOfMeasure

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