]> 2026-05-20T16:02:17+02:00 PhysicalQuantity 14 en 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. PhysicalQuantity 02c0621e-a527-4790-8a0f-2bb51973c819 PhysicalQuantity 2023-04-21T06:52:15Z 2460055.7862847 OSW02c0621ea52747908a0f2bb51973c819 14 en OSW02c0621ea52747908a0f2bb51973c819#PhysicalQuantity;en PhysicalQuantity 14 200 1 plainlist 2 [[HasObject::Category:OSW02c0621ea52747908a0f2bb51973c819]] OSW02c0621ea52747908a0f2bb51973c819# QUERY9b0d110c3cd13fb28a8a2e452bd24a30 14 [2,"smw-datavalue-wikipage-property-invalid-title","HasComment","In the same system of quantities, dim \u03c1B = ML\u22123 is the quantity dimension of mass concentration of component B, and ML\u22123 is also the quantity dimension of mass density, \u03c1.\nISO 80000-1@en"] [2,"smw-datavalue-wikipage-property-invalid-title","HasComment","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.\n\nSystems 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.@en"] [2,"smw-datavalue-wikipage-property-invalid-title","HasComment","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.\n\nFor 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.\n\nHowever, in some cases special measurement unit names are restricted to be used with quantities of specific kind only.\n\nFor example, the measurement unit \u2018second to the power minus one\u2019 (1\/s) is called hertz (Hz) when used for frequencies and becquerel (Bq) when used for activities of radionuclides.\n\nAs 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 \u00b7 m).@en"] [2,"smw-datavalue-wikipage-property-invalid-title","HasComment","\u2014 quantities of the same kind have the same quantity dimension,\n\u2014 quantities of different quantity dimensions are always of different kinds, and\n\u2014 quantities having the same quantity dimension are not necessarily of the same kind.\nISO 80000-1@en"] OSW02c0621ea52747908a0f2bb51973c819# ERR0cf8c53d7c740a4d5c6eafb6f7e19495 BaseQuantity 14 en OSWacaaa1243dde48b686e66ec6f364f408 CategorizedPhysicalQuantity 14 en OSW79751276b2d04e2fbbd499d412f43d55 DerivedQuantity 14 en OSW71f6ab56342c484bbbe0de86b7367cb3 PhysicalConstant 14 en OSWb953f2b1c8d14dd9b630d3ef6580c2bb StandardizedPhysicalQuantity 14 en OSW9c407ac0fd4c4178876395fad9fe29ec InternationalSystemOfQuantity 14 en OSWf35cff4ddc0944cfa72922fb79e3bfb2 SubClassOf 102 en SubClassOf