ONTOLOGY EXPLORER
dimensionless quantity
<https://www.omg.org/spec/Commons/QuantitiesAndUnits/DimensionlessQuantity>
プロパティと値
| プロパティ | 値 |
|---|---|
| source | "ISO 11240 Health informatics - Identification of medicinal products - Data elements and structures for the unique identification and exchange of units of measurement, clause 3.1.10" |
| source | "ISO 80000-1:2009 Quantities and units - Part 1: General, clause 3.8" |
| source | "https://www.omg.org/spec/SysML/"^^<http://www.w3.org/2001/XMLSchema#anyURI> |
| type | Class |
| label | "dimensionless quantity" |
| subClassOf | QuantityKind |
| definition | "quantity for which all the exponents of the factors corresponding to the base quantities in its quantity dimension are zero" |
| example | "Plane angle, solid angle, refractive index, relative permeability, mass fraction, friction factor, Mach number" |
| note | "Some quantities of dimension one are defined as the ratios of two quantities of the same kind. The coherent derived unit is the number one, symbol 1." |
| note | "The measurement units and values of quantities of dimension one are numbers, but such quantities convey more information than a number." |
| note | "The term 'dimensionless quantity' is commonly used and is included for historical reasons. It stems from the fact that all exponents are zero in the symbolic representation of the dimension for such quantities. The term 'quantity of dimension one' reflects the convention in which the symbolic representation of the dimension for such quantities is the symbol 1. This dimension is not a number, but the neutral element for multiplication of dimensions." |
| synonym | "quantity of dimension one" |
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