MeasurementUnit

MeasurementUnit [OSWb081b346727946ef9a3d2c088fcd79f4]
ID	OSWb081b346727946ef9a3d2c088fcd79f4
UUID	b081b346-7279-46ef-9a3d-2c088fcd79f4
Label	MeasurementUnit
Machine compatible name	MeasurementUnit
Statements (outgoing)

Statements (incoming)

Description

A 'Quantity' that stands for the standard reference magnitude of a specific class of measurement processes, defined and adopted by convention or by law.

The numerical quantity value of the 'MeasurementUnit' is conventionally 1 and does not appear.

Quantitative measurement results are expressed as a multiple of the 'MeasurementUnit'.

Item
Type(s)/Category(s)	EmmoTerm

Term

EmmoTerm
Superclass	ReferenceUnit Declared
Comment	"Real scalar quantity, defined and adopted by convention, with which any other quantity of the same kind can be compared to express the ratio of the second quantity to the first one as a number" ISO 80000-1 [en] "Unit symbols are mathematical entities and not abbreviations." "Symbols for units are treated as mathematical entities. In expressing the value of a quantity as the product of a numerical value and a unit, both the numerical value and the unit may be treated by the ordinary rules of algebra." https://www.bipm.org/utils/common/pdf/si-brochure/SI-Brochure-9-EN.pdf [en] While the SI brochure treats 'MeasurementUnit' as a 'PhysicalQuantity', in the EMMO this is not possible since the latter always has two direct parts, a 'Numerical' and a 'MeasurementUnit', while the former a single 'Symbol'. SI distinguishes between a quantity (an abstract concept) and the quantity value (a number and a reference). The EMMO, following strict nominalism, considers a SI quantity as a SI quantity value, collapsing the two concepts into one: the 'Quantity'. So, for the EMMO the symbol "kg" is not a physical quantity but a 'MeasurementUnit', while the string "1 kg" is 'Physical Quantity'. [en]
URI	http://emmo.info/emmo#EMMO_b081b346_7279_46ef_9a3d_2c088fcd79f4

jsondata

uuid

"b081b346-7279-46ef-9a3d-2c088fcd79f4"

name

"MeasurementUnit"

label

text	"MeasurementUnit"
lang	"en"

description

text	"A 'Quantity' that stands for the standard reference magnitude of a specific class of measurement processes, defined and adopted by convention or by law. The numerical quantity value of the 'MeasurementUnit' is conventionally 1 and does not appear. Quantitative measurement results are expressed as a multiple of the 'MeasurementUnit'."
lang	"en"

type

"Category:OSW57beed5e1294434ba77bb6516e461456"

uri

"http://emmo.info/emmo#EMMO_b081b346_7279_46ef_9a3d_2c088fcd79f4"

comment

text	""Real scalar quantity, defined and adopted by convention, with which any other quantity of the same kind can be compared to express the ratio of the second quantity to the first one as a number" ISO 80000-1"
lang	"en"

text	""Unit symbols are mathematical entities and not abbreviations." "Symbols for units are treated as mathematical entities. In expressing the value of a quantity as the product of a numerical value and a unit, both the numerical value and the unit may be treated by the ordinary rules of algebra." https://www.bipm.org/utils/common/pdf/si-brochure/SI-Brochure-9-EN.pdf"
lang	"en"

text

"While the SI brochure treats 'MeasurementUnit' as a 'PhysicalQuantity', in the EMMO this is not possible since the latter always has two direct parts, a 'Numerical' and a 'MeasurementUnit', while the former a single 'Symbol'. SI distinguishes between a quantity (an abstract concept) and the quantity value (a number and a reference). The EMMO, following strict nominalism, considers a SI quantity as a SI quantity value, collapsing the two concepts into one: the 'Quantity'. So, for the EMMO the symbol "kg" is not a physical quantity but a 'MeasurementUnit', while the string "1 kg" is 'Physical Quantity'."

lang

"en"

subClassOf

"http://emmo.info/emmo#EMMO_18ce5200_00f5_45bb_8c6f_6fb128cd41ae"

"http://emmo.info/emmo#EMMO_c9805ac9_a943_4be4_ac4b_6da64ba36c73"

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Description

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