Elementary Multiperspective Material Ontology

Last uploaded: February 11, 2023
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Preferred Name

PhysicalQuantity

Definitions

A 'Mathematical' entity that is made of a 'Numeral' and a 'MeasurementUnit' defined by a physical law, connected to a physical entity through a model perspective. Measurement is done according to the same model. Measurement units of quantities of the same quantity dimension may be designated by the same name and symbol even when the quantities are not of the same kind. For example, joule per kelvin and J/K are respectively the name and symbol of both a measurement unit of heat capacity and a measurement unit of entropy, which are generally not considered to be quantities of the same kind. However, in some cases special measurement unit names are restricted to be used with quantities of specific kind only. For example, the measurement unit ‘second to the power minus one’ (1/s) is called hertz (Hz) when used for frequencies and becquerel (Bq) when used for activities of radionuclides. As another example, the joule (J) is used as a unit of energy, but never as a unit of moment of force, i.e. the newton metre (N · m). In the same system of quantities, dim ρB = ML−3 is the quantity dimension of mass concentration of component B, and ML−3 is also the quantity dimension of mass density, ρ. ISO 80000-1 Measured or simulated 'physical propertiy'-s are always defined by a physical law, connected to a physical entity through a model perspective and measurement is done according to the same model. Systems of units suggests that this is the correct approach, since except for the fundamental units (length, time, charge) every other unit is derived by mathematical relations between these fundamental units, implying a physical laws or definitions. — quantities of the same kind have the same quantity dimension, — quantities of different quantity dimensions are always of different kinds, and — quantities having the same quantity dimension are not necessarily of the same kind. ISO 80000-1

ID

http://emmo.info/emmo#EMMO_02c0621e_a527_4790_8a0f_2bb51973c819

comment

A 'Mathematical' entity that is made of a 'Numeral' and a 'MeasurementUnit' defined by a physical law, connected to a physical entity through a model perspective. Measurement is done according to the same model.

Measurement units of quantities of the same quantity dimension may be designated by the same name and symbol even when the quantities are not of the same kind. For example, joule per kelvin and J/K are respectively the name and symbol of both a measurement unit of heat capacity and a measurement unit of entropy, which are generally not considered to be quantities of the same kind. However, in some cases special measurement unit names are restricted to be used with quantities of specific kind only. For example, the measurement unit ‘second to the power minus one’ (1/s) is called hertz (Hz) when used for frequencies and becquerel (Bq) when used for activities of radionuclides. As another example, the joule (J) is used as a unit of energy, but never as a unit of moment of force, i.e. the newton metre (N · m).

In the same system of quantities, dim ρB = ML−3 is the quantity dimension of mass concentration of component B, and ML−3 is also the quantity dimension of mass density, ρ. ISO 80000-1

Measured or simulated 'physical propertiy'-s are always defined by a physical law, connected to a physical entity through a model perspective and measurement is done according to the same model. Systems of units suggests that this is the correct approach, since except for the fundamental units (length, time, charge) every other unit is derived by mathematical relations between these fundamental units, implying a physical laws or definitions.

— quantities of the same kind have the same quantity dimension, — quantities of different quantity dimensions are always of different kinds, and — quantities having the same quantity dimension are not necessarily of the same kind. ISO 80000-1

EMMO_967080e5_2f42_4eb2_a3a9_c58143e835f9

A 'Mathematical' entity that is made of a 'Numeral' and a 'MeasurementUnit' defined by a physical law, connected to a physical entity through a model perspective. Measurement is done according to the same model.

isDefinedBy

http://emmo.info/emmo/disciplines/chemistry#

prefixIRI

emmo:EMMO_02c0621e_a527_4790_8a0f_2bb51973c819

prefLabel

PhysicalQuantity

seeAlso

http://emmo.info/emmo/disciplines/chemistry#

subClassOf

http://emmo.info/emmo#EMMO_f658c301_ce93_46cf_9639_4eace2c5d1d5

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Portal mappings

Mapping To Ontology Relations Source Type Actions
http://www.semanticweb.org/manufacturingproductionline#PhysicalQuantity https://data.industryportal.enit.fr/ontologies/RGOM LOOM Inter-portal
http://www.semanticweb.org/manufacturingproductionline#PhysicalQuantity https://data.industryportal.enit.fr/ontologies/MY LOOM Inter-portal
http://rds.posccaesar.org/ontology/lis14/rdl/PhysicalQuantity https://data.industryportal.enit.fr/ontologies/OMPD-SPO LOOM Inter-portal
http://rds.posccaesar.org/ontology/lis14/rdl/PhysicalQuantity https://data.industryportal.enit.fr/ontologies/OMPD-SPO LOOM Inter-portal
http://rds.posccaesar.org/ontology/lis14/rdl/PhysicalQuantity https://data.industryportal.enit.fr/ontologies/OMPD-SPO LOOM Inter-portal
http://emmo.info/emmo#EMMO_02c0621e_a527_4790_8a0f_2bb51973c819 https://data.industryportal.enit.fr/ontologies/CHAMEO LOOM Inter-portal
http://emmo.info/emmo#EMMO_02c0621e_a527_4790_8a0f_2bb51973c819 https://data.industryportal.enit.fr/ontologies/CHAMEO SAME_URI Inter-portal
http://emmo.info/emmo#EMMO_02c0621e_a527_4790_8a0f_2bb51973c819 https://data.industryportal.enit.fr/ontologies/CHAMEO LOOM Inter-portal
http://emmo.info/emmo#EMMO_02c0621e_a527_4790_8a0f_2bb51973c819 https://data.industryportal.enit.fr/ontologies/CHAMEO SAME_URI Inter-portal
http://emmo.info/emmo#EMMO_02c0621e_a527_4790_8a0f_2bb51973c819 https://data.industryportal.enit.fr/ontologies/CHAMEO LOOM Inter-portal
http://emmo.info/emmo#EMMO_02c0621e_a527_4790_8a0f_2bb51973c819 https://data.industryportal.enit.fr/ontologies/CHAMEO SAME_URI Inter-portal
http://emmo.info/emmo#EMMO_02c0621e_a527_4790_8a0f_2bb51973c819 https://data.industryportal.enit.fr/ontologies/CHAMEO LOOM Inter-portal
http://emmo.info/emmo#EMMO_02c0621e_a527_4790_8a0f_2bb51973c819 https://data.industryportal.enit.fr/ontologies/CHAMEO SAME_URI Inter-portal
https://w3id.org/emmo#PhysicalQuantity https://data.industryportal.enit.fr/ontologies/BTO-EMMO LOOM Inter-portal
https://w3id.org/emmo#PhysicalQuantity https://data.industryportal.enit.fr/ontologies/BTO LOOM Inter-portal
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