SI units
type: Ontology
version IRI: siunits
imports: metrology
imports: sidimensionalunits
abstract: The module 'siunits' defines the 7 base units and 22 derived units as well as the metric prefixes specified in the SI system. All other SI units goes into one of the following modules: - prefixedsiunits: SI units made of a metric prefix and a SI base, derived or accepted unit. Examples: km, mg... - coherentsiunits: Coherent SI-units. Products of integer powers of the base and derived SI units. Examples: A/J, Nm, m³, ... - noncoherentsiunits: Non-coherent SI-units whos numerical factor in front of the product of base SI units is NOT equal to one. This include all SI-units not included in the modules above. Examples: g, mg/s...
contributor: https://orcid.org/0000-0002-4181-2852
contributor: https://orcid.org/0000-0002-8758-6109
creator: https://orcid.org/0000-0003-3805-8761
creator: 0000-0002-1560-809X
license: https://creativecommons.org/licenses/by/4.0/legalcode
publisher: emmc.eu
comment: The EMMO should be reasoned with HermiT to visualize all inferences and class hierarchy (ctrl+R hotkey in Protege).
version info: 1.0.3

unitSymbol
type: AnnotationProperty
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: The standard symbol for a unit.
EMMO c7b62dd7 063a 4c2a 8504 42f7264ba83f: A unit symbol may be a symbolic construct (e.g. km) or a symbol (e.g. m).
sub property of: comment
range: string

hasSIConversionMultiplier
type: DatatypeProperty
range: double
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: Number to multiply a SI coherent unit with when converting to a given non-SI coherent unit.
EMMO c7b62dd7 063a 4c2a 8504 42f7264ba83f: Conversion formula: nonsi_coherent_unit = si_coherent_unit * multiplier + offset

hasPrefixMultiplier
type: DatatypeProperty
range: double
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: Relates a SI prefixed unit to the multiplication factor corresponding to the prefix.

hasSIConversionOffset
type: DatatypeProperty
range: double
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: Number to add to a SI coherent unit when converting to a given non-SI coherent unit.
EMMO c7b62dd7 063a 4c2a 8504 42f7264ba83f: Conversion formula: nonsi_coherent_unit = si_coherent_unit * multiplier + offset

hasPrefixSymbol
type: DatatypeProperty
range: string
deprecated: true
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: Relates a SI prefixed unit to the prefix symbol.

Ampere
type: Class
subclass of: Restriction
  has value: A
unit code: AMP
EMMO 1f1b164d ec6a 4faa 8d5e 88bda62316cc: http://qudt.org/vocab/unit/A
EMMO 33ae2d07 5526 4555 a0b4 8f4c031b5652: A
EMMO 6dd685dd 1895 46e4 b227 be9f7d643c25: http://dbpedia.org/resource/Ampere
EMMO 70fe84ff 99b6 4206 a9fc 9a8931836d84: The ampere, symbol A, is the SI unit of electric current. It is defined by taking the fixed numerical value of the elementary charge e to be 1.602176634×10−19 when expressed in the unit C, which is equal to A s, where the second is defined in terms of ∆νCs.
EMMO c84c6752 6d64 48cc 9500 e54a3c34898d: http://en.wikipedia.org/wiki/Ampere
EMMO fe015383 afb3 44a6 ae86 043628697aa2: https://doi.org/10.1351/goldbook.A00300

Becquerel
type: Class
subclass of: Restriction
  has value: Bq
unit code: BQL
EMMO 1f1b164d ec6a 4faa 8d5e 88bda62316cc: http://qudt.org/vocab/unit/BQ
EMMO 33ae2d07 5526 4555 a0b4 8f4c031b5652: Bq
EMMO 6dd685dd 1895 46e4 b227 be9f7d643c25: http://dbpedia.org/resource/Becquerel
EMMO 70fe84ff 99b6 4206 a9fc 9a8931836d84: Radioactive decays per second.
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: SI unit for radioactive activity.
EMMO c7b62dd7 063a 4c2a 8504 42f7264ba83f: The SI derived unit of activity, usually meaning radioactivity. "Radioactivity" is caused when atoms disintegrate, ejecting energetic particles. One becquerel is the radiation caused by one disintegration per second; this is equivalent to about 27.0270 picocuries (pCi). The unit is named for a French physicist, Antoine-Henri Becquerel (1852-1908), the discoverer of radioactivity. Note: both the becquerel and the hertz are basically defined as one event per second, yet they measure different things. The hertz is used to measure the rates of events that happen periodically in a fixed and definite cycle. The becquerel is used to measure the rates of events that happen sporadically and unpredictably, not in a definite cycle. -- QUDT
EMMO c84c6752 6d64 48cc 9500 e54a3c34898d: http://en.wikipedia.org/wiki/Becquerel
EMMO fe015383 afb3 44a6 ae86 043628697aa2: https://doi.org/10.1351/goldbook.B00624

Candela
type: Class
subclass of: Restriction
  has value: cd
unit code: CDL
EMMO 1f1b164d ec6a 4faa 8d5e 88bda62316cc: http://qudt.org/vocab/unit/CD
EMMO 33ae2d07 5526 4555 a0b4 8f4c031b5652: cd
EMMO 6dd685dd 1895 46e4 b227 be9f7d643c25: http://dbpedia.org/resource/Candela
EMMO 70fe84ff 99b6 4206 a9fc 9a8931836d84: The candela, symbol cd, is the SI unit of luminous intensity in a given direction. It is defined by taking the fixed numerical value of the luminous efficacy of monochromatic radiation of frequency 540×1012 Hz, Kcd, to be 683 when expressed in the unit lm W−1, which is equal to cd sr W−1, or cd sr kg−1 m−2 s3, where the kilogram, metre and second are defined in terms of h, c and ∆νCs.
EMMO c84c6752 6d64 48cc 9500 e54a3c34898d: http://en.wikipedia.org/wiki/Candela
EMMO fe015383 afb3 44a6 ae86 043628697aa2: https://doi.org/10.1351/goldbook.C00787

Coulomb
type: Class
subclass of: Restriction
  has value: C
unit code: COU
EMMO 1f1b164d ec6a 4faa 8d5e 88bda62316cc: http://qudt.org/vocab/unit/C
EMMO 33ae2d07 5526 4555 a0b4 8f4c031b5652: C
EMMO 6dd685dd 1895 46e4 b227 be9f7d643c25: http://dbpedia.org/resource/Coulomb
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: SI unit for electric charge.
EMMO c7b62dd7 063a 4c2a 8504 42f7264ba83f: The SI unit of electric charge. One coulomb is the amount of charge accumulated in one second by a current of one ampere. Electricity is actually a flow of charged particles, such as electrons, protons, or ions. The charge on one of these particles is a whole-number multiple of the charge e on a single electron, and one coulomb represents a charge of approximately 6.241 506 x 1018 e. The coulomb is named for a French physicist, Charles-Augustin de Coulomb (1736-1806), who was the first to measure accurately the forces exerted between electric charges. -- QUDT
EMMO c84c6752 6d64 48cc 9500 e54a3c34898d: http://en.wikipedia.org/wiki/Coulomb
EMMO fe015383 afb3 44a6 ae86 043628697aa2: https://doi.org/10.1351/goldbook.C01365

DegreeCelsius
type: Class
subclass of: Restriction
  has value: 1.0
subclass of: Restriction
  has value: -273.15
subclass of: Restriction
  has value: °C
unit code: CEL
EMMO 1f1b164d ec6a 4faa 8d5e 88bda62316cc: http://qudt.org/vocab/unit/DEG_C
EMMO 33ae2d07 5526 4555 a0b4 8f4c031b5652: Cel
EMMO 6dd685dd 1895 46e4 b227 be9f7d643c25: http://dbpedia.org/resource/Celsius
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: Measurement unit for Celsius temperature. This unit can only be used for expressing temperature differences.
EMMO c7b62dd7 063a 4c2a 8504 42f7264ba83f: Celsius, also known as centigrade, is a scale and unit of measurement for temperature. It can refer to a specific temperature on the Celsius scale as well as a unit to indicate a temperature interval, a difference between two temperatures or an uncertainty. This definition fixes the magnitude of both the degree Celsius and the kelvin as precisely 1 part in 273.16 (approximately 0.00366) of the difference between absolute zero and the triple point of water. Thus, it sets the magnitude of one degree Celsius and that of one kelvin as exactly the same. Additionally, it establishes the difference between the two scales' null points as being precisely 273.15 °C. -- QUDT
EMMO c84c6752 6d64 48cc 9500 e54a3c34898d: http://en.wikipedia.org/wiki/Celsius
EMMO fe015383 afb3 44a6 ae86 043628697aa2: https://doi.org/10.1351/goldbook.D01561

Centi
type: Class
subclass of: Restriction
  has value: c
subclass of: Restriction
  has value: 0.01
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: SI prefix who's value is 1/100.

PicoPrefixedUnit
type: Class
subclass of: Restriction
subclass of: Restriction
  has value: 1.0E-12
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: Superclass for all units prefixed with "pico" (1e-12).

Giga
type: Class
subclass of: Restriction
  has value: G
subclass of: Restriction
  has value: 1.0E9
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: SI prefix who's value is 1e9.

DeciPrefixedUnit
type: Class
subclass of: Restriction
subclass of: Restriction
  has value: 0.1
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: Superclass for all units prefixed with "deci" (0.1).

SICoherentDerivedUnit
type: Class
comment: This class collects all units that are products or powers of SI base or SI special units only.
example: m/s kg/m^3
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: A SI derived unit whos numerical factor in front of the product of SI base units is one.

NonSIUnit
type: Class
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: Measurement units that are not SI units.

DecaPrefixedUnit
type: Class
subclass of: Restriction
subclass of: Restriction
  has value: 10.0
alternative label: DekaPrefixedUnit
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: Superclass for all units prefixed with "deca" (10).

SIMetricPrefixedUnit
type: Class
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: A SI base unit or SI derived unit with a metric prefix.

MetricMultipleUnit
type: Class
EMMO 8a137e9f 579c 4e28 baca e8980eb0c3db: disjointUnionOf: DecaPrefixedUnit, HectoPrefixedUnit, TeraPrefixedUnit, PetaPrefixedUnit, ExaPrefixedUnit, MegaPrefixedUnit, KiloPrefixedUnit, GigaPrefixedUnit, ZettaPrefixedUnit, YottaPrefixedUnit
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: Measurement unit obtained by multiplying a given measurement unit by an integer SI prefix greater than one.

HectoPrefixedUnit
type: Class
subclass of: Restriction
subclass of: Restriction
  has value: 100.0
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: Superclass for all units prefixed with "hecto" (100).

SIMultiplePrefix
type: Class
EMMO 8a137e9f 579c 4e28 baca e8980eb0c3db: disjointUnionOf: Giga, Tera, Exa, Hecto, Kilo, Mega, Ronna, Yotta, Peta, Quetta, Deca, Zetta
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: SI prefix who's value is a positive integer larger than 1.

FemtoPrefixedUnit
type: Class
subclass of: Restriction
subclass of: Restriction
  has value: 1.0E-15
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: Superclass for all units prefixed with "femto" (1e-15).

SIPrefix
type: Class
EMMO 8a137e9f 579c 4e28 baca e8980eb0c3db: disjointUnionOf: SIMultiplePrefix, SISubMultiplePrefix
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: Metric prefix defined in the SI system.

ZeptoPrefixedUnit
type: Class
subclass of: Restriction
subclass of: Restriction
  has value: 1.0E-21
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: Superclass for all units prefixed with "zepto" (1e-21).

Pico
type: Class
subclass of: Restriction
  has value: p
subclass of: Restriction
  has value: 1.0E-12
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: SI prefix who's value is 1e-12.

SIUnitSymbol
type: Class
EMMO 8a137e9f 579c 4e28 baca e8980eb0c3db: disjointUnionOf: SIBaseUnit, SISpecialUnit
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: A unit symbol that belongs to the SI system. Is either a SI base unit or a SI special unit.

Tera
type: Class
subclass of: Restriction
  has value: T
subclass of: Restriction
  has value: 1.0E12
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: SI prefix who's value is 1e12.

SIBaseUnit
type: Class
EMMO 8a137e9f 579c 4e28 baca e8980eb0c3db: disjointUnionOf: Ampere, Candela, Kelvin, Kilogram, Metre, Mole, Second
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: The base units in the SI system.

TeraPrefixedUnit
type: Class
subclass of: Restriction
subclass of: Restriction
  has value: 1.0E12
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: Superclass for all units prefixed with "tera" (1e12).

Exa
type: Class
subclass of: Restriction
  has value: E
subclass of: Restriction
  has value: 1.0E18
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: SI prefix who's value is 1e18.

AttoPrefixedUnit
type: Class
subclass of: Restriction
subclass of: Restriction
  has value: 1.0E-18
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: Superclass for all units prefixed with "atto" (1e-18).

PetaPrefixedUnit
type: Class
subclass of: Restriction
subclass of: Restriction
  has value: 1.0E15
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: Superclass for all units prefixed with "peta" (1e15).

SISubMultiplePrefix
type: Class
EMMO 8a137e9f 579c 4e28 baca e8980eb0c3db: disjointUnionOf: Centi, Pico, Milli, Zepto, Quecto, Micro, Yocto, Femto, Deci, Nano, Atto, Ronto
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: SI prefix who's value is 1/N where N is a positive integer larger than 1.

Milli
type: Class
subclass of: Restriction
  has value: m
subclass of: Restriction
  has value: 0.001
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: SI prefix who's value is 1/1000.

Hecto
type: Class
subclass of: Restriction
  has value: h
subclass of: Restriction
  has value: 100.0
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: SI prefix who's value is 100.

Zepto
type: Class
subclass of: Restriction
  has value: z
subclass of: Restriction
  has value: 1.0E-21
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: SI prefix who's value is 1e-21.

Quecto
type: Class
subclass of: Restriction
  has value: q
subclass of: Restriction
  has value: 1.0E-30
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: SI prefix who's value is 1e-30.

SIDerivedUnit
type: Class
EMMO 8a137e9f 579c 4e28 baca e8980eb0c3db: disjointUnionOf: SICoherentDerivedUnit, SINonCoherentDerivedUnit
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: A derived unit that belongs to the SI system.

ExaPrefixedUnit
type: Class
subclass of: Restriction
subclass of: Restriction
  has value: 1.0E18
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: Superclass for all units prefixed with "exa" (1e18).

MegaPrefixedUnit
type: Class
subclass of: Restriction
subclass of: Restriction
  has value: 1000000.0
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: Superclass for all units prefixed with "mega" (1e6).

SINonCoherentDerivedUnit
type: Class
example: cm/s
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: A derived unit whos numerical factor in front of the product of base units is NOT equal to one.

Kilo
type: Class
subclass of: Restriction
  has value: k
subclass of: Restriction
  has value: 1000.0
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: SI prefix who's value is 1000.

Micro
type: Class
subclass of: Restriction
  has value: μ
subclass of: Restriction
  has value: 1.0E-6
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: SI prefix who's value is 1e-6.

SICoherentUnit
type: Class
EMMO 8a137e9f 579c 4e28 baca e8980eb0c3db: disjointUnionOf: SICoherentDerivedUnit, SIBaseUnit, SISpecialUnit
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: A unit that can be expressed as a product of powers of SI base units with no pre-factor or offset.
EMMO c7b62dd7 063a 4c2a 8504 42f7264ba83f: Derived units are defined as products of powers of the base units. When the numerical factor of this product is one, the derived units are called coherent derived units. The base and coherent derived units of the SI form a coherent set, designated the set of coherent SI units.

KiloPrefixedUnit
type: Class
subclass of: Restriction
subclass of: Restriction
  has value: 1000.0
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: Superclass for all units prefixed with "kilo" (1000).

Yocto
type: Class
subclass of: Restriction
  has value: y
subclass of: Restriction
  has value: 1.0E-24
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: SI prefix who's value is 1e-24.

Femto
type: Class
subclass of: Restriction
  has value: f
subclass of: Restriction
  has value: 1.0E-15
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: SI prefix who's value is 1e-15.

SINonCoherentUnit
type: Class
EMMO 8a137e9f 579c 4e28 baca e8980eb0c3db: disjointUnionOf: SIMetricPrefixedUnit, SINonCoherentDerivedUnit
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: An SI unit whos numerical factor in front of the product of base SI units is NOT equal to one.
EMMO c7b62dd7 063a 4c2a 8504 42f7264ba83f: A non-SI coherent can be expressed in terms of its corresponding SI coherent unit, as nonsi_coherent_unit = si_coherent_unit * multiplier + offset where `multiplier` and `offset` are specified via the 'hasConversionMultiplier' and 'hasConversionOffset' data properties, respectively.

Mega
type: Class
subclass of: Restriction
  has value: M
subclass of: Restriction
  has value: 1000000.0
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: SI prefix who's value is 1e6.

Deci
type: Class
subclass of: Restriction
  has value: d
subclass of: Restriction
  has value: 0.1
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: SI prefix who's value is 1/10.

MetricSubMultipleUnit
type: Class
EMMO 8a137e9f 579c 4e28 baca e8980eb0c3db: disjointUnionOf: PicoPrefixedUnit, DeciPrefixedUnit, FemtoPrefixedUnit, ZeptoPrefixedUnit, AttoPrefixedUnit, MicroPrefixedUnit, MilliPrefixedUnit, CentiPrefixedUnit, NanoPrefixedUnit, YoctoPrefixedUnit
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: Measurement unit obtained by dividing a given measurement unit by an integer SI prefix greater than one.

MicroPrefixedUnit
type: Class
subclass of: Restriction
subclass of: Restriction
  has value: 1.0E-6
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: Superclass for all units prefixed with "micro" (1e-6).

MilliPrefixedUnit
type: Class
subclass of: Restriction
subclass of: Restriction
  has value: 0.001
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: Superclass for all units prefixed with "milli" (1e-3).

GigaPrefixedUnit
type: Class
subclass of: Restriction
subclass of: Restriction
  has value: 1.0E9
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: Superclass for all units prefixed with "giga" (1e9).

Ronna
type: Class
subclass of: Restriction
  has value: R
subclass of: Restriction
  has value: 1.0E27
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: SI prefix who's value is 1e27.

Nano
type: Class
subclass of: Restriction
  has value: n
subclass of: Restriction
  has value: 1.0E-9
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: SI prefix who's value is 1e-9.

CentiPrefixedUnit
type: Class
subclass of: Restriction
subclass of: Restriction
  has value: 0.01
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: Superclass for all units prefixed with "centi" (0.01).

Yotta
type: Class
subclass of: Restriction
  has value: Y
subclass of: Restriction
  has value: 1.0E24
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: SI prefix who's value is 1e24.

MetricPrefixedUnit
type: Class
comment: The presence of the prefix makes this units non-coherent with SI system.
EMMO 8a137e9f 579c 4e28 baca e8980eb0c3db: disjointUnionOf: MetricMultipleUnit, MetricSubMultipleUnit
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: A special unit with a metric prefix.

Peta
type: Class
subclass of: Restriction
  has value: P
subclass of: Restriction
  has value: 1.0E15
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: SI prefix who's value is 1e15.

ZettaPrefixedUnit
type: Class
subclass of: Restriction
subclass of: Restriction
  has value: 1.0E21
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: Superclass for all units prefixed with "zetta" (1e21).

Quetta
type: Class
subclass of: Restriction
  has value: Q
subclass of: Restriction
  has value: 1.0E30
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: SI prefix who's value is 1e30.

Deca
type: Class
subclass of: Restriction
  has value: da
subclass of: Restriction
  has value: 10.0
alternative label: Deka
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: SI prefix who's value is 10.

NanoPrefixedUnit
type: Class
subclass of: Restriction
subclass of: Restriction
  has value: 1.0E-9
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: Superclass for all units prefixed with "nano" (1e-9).

YottaPrefixedUnit
type: Class
subclass of: Restriction
subclass of: Restriction
  has value: 1.0E24
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: Superclass for all units prefixed with "yotta" (1e24).

Atto
type: Class
subclass of: Restriction
  has value: a
subclass of: Restriction
  has value: 1.0E-18
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: SI prefix who's value is 1e-18.

SISpecialUnit
type: Class
EMMO 8a137e9f 579c 4e28 baca e8980eb0c3db: disjointUnionOf: Becquerel, Coulomb, DegreeCelsius, Farad, Gray, Henry, Hertz, Joule, Katal, Lumen, Lux, Newton, Ohm, Pascal, Radian, Siemens, Sievert, Steradian, Tesla, Volt, Watt, Weber
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: The 22 derived units that are given a special name in the SI system that stands for units derived by SI base units.
EMMO c7b62dd7 063a 4c2a 8504 42f7264ba83f: These units are SI coherent by definition.
EMMO c84c6752 6d64 48cc 9500 e54a3c34898d: https://en.wikipedia.org/wiki/International_System_of_Units#Derived_units

YoctoPrefixedUnit
type: Class
subclass of: Restriction
subclass of: Restriction
  has value: 1.0E-24
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: Superclass for all units prefixed with "yocto" (1e-24).

Ronto
type: Class
subclass of: Restriction
  has value: r
subclass of: Restriction
  has value: 1.0E-27
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: SI prefix who's value is 1e-27.

Zetta
type: Class
subclass of: Restriction
  has value: Z
subclass of: Restriction
  has value: 1.0E-21
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: SI prefix who's value is 1e21.

SIUnit
type: Class
comment: The complete set of SI units includes both the coherent set and the multiples and sub-multiples formed by using the SI prefixes.
comment: The names, symbols and prefixes of SI units are defined by the General Conference on Weights and Measures (CGPM). https://en.wikipedia.org/wiki/General_Conference_on_Weights_and_Measures
EMMO 8a137e9f 579c 4e28 baca e8980eb0c3db: disjointUnionOf: SICoherentDerivedUnit, SIMetricPrefixedUnit, SIBaseUnit, SINonCoherentDerivedUnit, SISpecialUnit
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: The set of units provided by the SI referring to the ISQ.

Farad
type: Class
subclass of: Restriction
  has value: F
comment: Measurement unit for electric capacitance.
unit code: FAR
EMMO 1f1b164d ec6a 4faa 8d5e 88bda62316cc: http://qudt.org/vocab/unit/FARAD
EMMO 33ae2d07 5526 4555 a0b4 8f4c031b5652: F
EMMO 6dd685dd 1895 46e4 b227 be9f7d643c25: http://dbpedia.org/resource/Farad
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: The SI unit of electric capacitance. Very early in the study of electricity scientists discovered that a pair of conductors separated by an insulator can store a much larger charge than an isolated conductor can store. The better the insulator, the larger the charge that the conductors can hold. This property of a circuit is called capacitance, and it is measured in farads. One farad is defined as the ability to store one coulomb of charge per volt of potential difference between the two conductors. This is a natural definition, but the unit it defines is very large. In practical circuits, capacitance is often measured in microfarads, nanofarads, or sometimes even in picofarads (10⁻¹² farad, or trillionths of a farad). The unit is named for the British physicist Michael Faraday (1791-1867), who was known for his work in electricity and electrochemistry. -- QUDT
EMMO c84c6752 6d64 48cc 9500 e54a3c34898d: http://en.wikipedia.org/wiki/Farad
EMMO fe015383 afb3 44a6 ae86 043628697aa2: https://doi.org/10.1351/goldbook.F02320

Gray
type: Class
subclass of: Restriction
  has value: Gy
unit code: A95
EMMO 1f1b164d ec6a 4faa 8d5e 88bda62316cc: http://qudt.org/vocab/unit/GRAY
EMMO 33ae2d07 5526 4555 a0b4 8f4c031b5652: Gy
EMMO 6dd685dd 1895 46e4 b227 be9f7d643c25: http://dbpedia.org/resource/Grey
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: SI unit for absorbed dose.
EMMO c7b62dd7 063a 4c2a 8504 42f7264ba83f: The SI unit of radiation dose. Radiation carries energy, and when it is absorbed by matter the matter receives this energy. The dose is the amount of energy deposited per unit of mass. One gray is defined to be the dose of one joule of energy absorbed per kilogram of matter, or 100 rad. The unit is named for the British physician L. Harold Gray (1905-1965), an authority on the use of radiation in the treatment of cancer. -- QUDT
EMMO c84c6752 6d64 48cc 9500 e54a3c34898d: //en.wikipedia.org/wiki/Grey?oldid=494774160
EMMO fe015383 afb3 44a6 ae86 043628697aa2: https://doi.org/10.1351/goldbook.G02696

Henry
type: Class
subclass of: Restriction
  has value: H
unit code: 81
EMMO 1f1b164d ec6a 4faa 8d5e 88bda62316cc: http://qudt.org/vocab/unit/H
EMMO 33ae2d07 5526 4555 a0b4 8f4c031b5652: H
EMMO 6dd685dd 1895 46e4 b227 be9f7d643c25: http://dbpedia.org/resource/Henry
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: SI unit for electrical inductance.
EMMO c7b62dd7 063a 4c2a 8504 42f7264ba83f: H = Wb/A = V·s/A = Ω·s
EMMO c7b62dd7 063a 4c2a 8504 42f7264ba83f: The SI unit of electric inductance. A changing magnetic field induces an electric current in a loop of wire (or in a coil of many loops) located in the field. Although the induced voltage depends only on the rate at which the magnetic flux changes, measured in webers per second, the amount of the current depends also on the physical properties of the coil. A coil with an inductance of one henry requires a flux of one weber for each ampere of induced current. If, on the other hand, it is the current which changes, then the induced field will generate a potential difference within the coil: if the inductance is one henry a current change of one ampere per second generates a potential difference of one volt. The henry is a large unit; inductances in practical circuits are measured in millihenrys (mH) or microhenrys (μH). The unit is named for the American physicist Joseph Henry (1797-1878), one of several scientists who discovered independently how magnetic fields can be used to generate alternating currents. -- QUDT
EMMO c84c6752 6d64 48cc 9500 e54a3c34898d: http://en.wikipedia.org/wiki/Henry
EMMO fe015383 afb3 44a6 ae86 043628697aa2: https://doi.org/10.1351/goldbook.H02782

Hertz
type: Class
subclass of: Restriction
  has value: Hz
unit code: HTZ
EMMO 1f1b164d ec6a 4faa 8d5e 88bda62316cc: http://qudt.org/vocab/unit/HZ
EMMO 33ae2d07 5526 4555 a0b4 8f4c031b5652: Hz
EMMO 6dd685dd 1895 46e4 b227 be9f7d643c25: http://dbpedia.org/resource/Hertz
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: SI unit for frequence.
EMMO c7b62dd7 063a 4c2a 8504 42f7264ba83f: The hertz (symbol Hz) is the SI unit of frequency defined as the number of cycles per second of a periodic phenomenon. One of its most common uses is the description of the sine wave, particularly those used in radio and audio applications, such as the frequency of musical tones. The word "hertz" is named for Heinrich Rudolf Hertz, who was the first to conclusively prove the existence of electromagnetic waves. -- QUDT
EMMO fe015383 afb3 44a6 ae86 043628697aa2: https://doi.org/10.1351/goldbook.H02785

Joule
type: Class
subclass of: Restriction
  has value: J
unit code: JOU
EMMO 1f1b164d ec6a 4faa 8d5e 88bda62316cc: http://qudt.org/vocab/unit/J
EMMO 33ae2d07 5526 4555 a0b4 8f4c031b5652: J
EMMO 6dd685dd 1895 46e4 b227 be9f7d643c25: http://dbpedia.org/resource/Joule
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: SI unit for energy.
EMMO c7b62dd7 063a 4c2a 8504 42f7264ba83f: The SI unit of work or energy, defined to be the work done by a force of one newton acting to move an object through a distance of one meter in the direction in which the force is applied. Equivalently, since kinetic energy is one half the mass times the square of the velocity, one joule is the kinetic energy of a mass of two kilograms moving at a velocity of 1 m/s. -- QUDT
EMMO c84c6752 6d64 48cc 9500 e54a3c34898d: http://en.wikipedia.org/wiki/Joule
EMMO fe015383 afb3 44a6 ae86 043628697aa2: https://doi.org/10.1351/goldbook.J03363

Katal
type: Class
subclass of: Restriction
  has value: kat
unit code: KAT
EMMO 1f1b164d ec6a 4faa 8d5e 88bda62316cc: http://qudt.org/vocab/unit/KAT
EMMO 33ae2d07 5526 4555 a0b4 8f4c031b5652: kat
EMMO 6dd685dd 1895 46e4 b227 be9f7d643c25: http://dbpedia.org/resource/Katal
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: SI unit for catalytic activity.
EMMO c7b62dd7 063a 4c2a 8504 42f7264ba83f: A unit of catalytic activity used especially in the chemistry of enzymes. A catalyst is a substance that starts or speeds a chemical reaction. Enzymes are proteins that act as catalysts within the bodies of living plants and animals. A catalyst has an activity of one katal if it enables a reaction to proceed at the rate of one mole per second. -- QUDT
EMMO c84c6752 6d64 48cc 9500 e54a3c34898d: http://en.wikipedia.org/wiki/Katal
EMMO fe015383 afb3 44a6 ae86 043628697aa2: https://doi.org/10.1351/goldbook.K03372

Kelvin
type: Class
subclass of: Restriction
  has value: K
unit code: KEL
EMMO 1f1b164d ec6a 4faa 8d5e 88bda62316cc: http://qudt.org/vocab/unit/K
EMMO 33ae2d07 5526 4555 a0b4 8f4c031b5652: K
EMMO 6dd685dd 1895 46e4 b227 be9f7d643c25: http://dbpedia.org/resource/Kelvin
EMMO 70fe84ff 99b6 4206 a9fc 9a8931836d84: The kelvin, symbol K, is the SI unit of thermodynamic temperature. It is defined by taking the fixed numerical value of the Boltzmann constant k to be 1.380649×10−23 when expressed in the unit J K−1, which is equal to kg m2 s−2 K−1, where the kilogram, metre and second are defined in terms of h, c and ∆νCs.
EMMO c84c6752 6d64 48cc 9500 e54a3c34898d: http://en.wikipedia.org/wiki/Kelvin
EMMO fe015383 afb3 44a6 ae86 043628697aa2: https://doi.org/10.1351/goldbook.K03374

Kilogram
type: Class
subclass of: Restriction
  has value: kg
unit code: KGM
EMMO 1f1b164d ec6a 4faa 8d5e 88bda62316cc: http://qudt.org/vocab/unit/KiloGM
EMMO 33ae2d07 5526 4555 a0b4 8f4c031b5652: kg
EMMO 6dd685dd 1895 46e4 b227 be9f7d643c25: http://dbpedia.org/resource/Kilogram
EMMO 70fe84ff 99b6 4206 a9fc 9a8931836d84: The kilogram, symbol kg, is the SI unit of mass. It is defined by taking the fixed numerical value of the Planck constant h to be 6.62607015×10−34 when expressed in the unit J s, which is equal to kg m2 s−1, where the metre and the second are defined in terms of c and ∆νCs.
EMMO c84c6752 6d64 48cc 9500 e54a3c34898d: http://en.wikipedia.org/wiki/Kilogram
EMMO fe015383 afb3 44a6 ae86 043628697aa2: https://doi.org/10.1351/goldbook.K03391

Lumen
type: Class
subclass of: Restriction
  has value: lm
unit code: LUM
EMMO 1f1b164d ec6a 4faa 8d5e 88bda62316cc: http://qudt.org/vocab/unit/LM
EMMO 33ae2d07 5526 4555 a0b4 8f4c031b5652: lm
EMMO 6dd685dd 1895 46e4 b227 be9f7d643c25: http://dbpedia.org/resource/Lumen
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: SI unit for luminous flux.
EMMO c7b62dd7 063a 4c2a 8504 42f7264ba83f: The SI unit for measuring the flux of light being produced by a light source or received by a surface. The intensity of a light source is measured in candelas. One lumen represents the total flux of light emitted, equal to the intensity in candelas multiplied by the solid angle in steradians into which the light is emitted. A full sphere has a solid angle of 4·π steradians. A light source that uniformly radiates one candela in all directions has a total luminous flux of 1 cd·4π sr = 4π cd·sr ≈ 12.57 lumens. "Lumen" is a Latin word for light. -- QUDT
EMMO c84c6752 6d64 48cc 9500 e54a3c34898d: https://en.wikipedia.org/wiki/Lumen_(unit)
EMMO fe015383 afb3 44a6 ae86 043628697aa2: https://doi.org/10.1351/goldbook.L03639

Lux
type: Class
subclass of: Restriction
  has value: lx
unit code: LUX
EMMO 1f1b164d ec6a 4faa 8d5e 88bda62316cc: http://qudt.org/vocab/unit/LUX
EMMO 33ae2d07 5526 4555 a0b4 8f4c031b5652: lx
EMMO 6dd685dd 1895 46e4 b227 be9f7d643c25: http://dbpedia.org/resource/Lux
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: SI unit for illuminance.
EMMO c7b62dd7 063a 4c2a 8504 42f7264ba83f: The SI unit for measuring the illumination (illuminance) of a surface. One lux is defined as an illumination of one lumen per square meter or 0.0001 phot. In considering the various light units, it's useful to think about light originating at a point and shining upon a surface. The intensity of the light source is measured in candelas; the total light flux in transit is measured in lumens (1 lumen = 1 candelau·steradian); and the amount of light received per unit of surface area is measured in lux (1 lux = 1 lumen/square meter). One lux is equal to approximately 0.09290 foot candle. -- QUDT
EMMO c84c6752 6d64 48cc 9500 e54a3c34898d: http://en.wikipedia.org/wiki/Lux
EMMO fe015383 afb3 44a6 ae86 043628697aa2: https://doi.org/10.1351/goldbook.L03651

Metre
type: Class
subclass of: Restriction
  has value: m
alternative label: Meter
unit code: MTR
EMMO 1f1b164d ec6a 4faa 8d5e 88bda62316cc: http://qudt.org/vocab/unit/M
EMMO 33ae2d07 5526 4555 a0b4 8f4c031b5652: m
EMMO 6dd685dd 1895 46e4 b227 be9f7d643c25: http://dbpedia.org/resource/Metre
EMMO 70fe84ff 99b6 4206 a9fc 9a8931836d84: The metre, symbol m, is the SI unit of length. It is defined by taking the fixed numerical value of the speed of light in vacuum c to be 299792458 when expressed in the unit m s−1, where the second is defined in terms of ∆νCs.
EMMO c84c6752 6d64 48cc 9500 e54a3c34898d: http://en.wikipedia.org/wiki/Metre
EMMO fe015383 afb3 44a6 ae86 043628697aa2: https://doi.org/10.1351/goldbook.M03884

Mole
type: Class
subclass of: Restriction
  has value: mol
unit code: C34
EMMO 1f1b164d ec6a 4faa 8d5e 88bda62316cc: http://qudt.org/vocab/unit/MOL
EMMO 33ae2d07 5526 4555 a0b4 8f4c031b5652: mol
EMMO 6dd685dd 1895 46e4 b227 be9f7d643c25: http://dbpedia.org/resource/Mole_%28unit%29
EMMO 70fe84ff 99b6 4206 a9fc 9a8931836d84: The mole, symbol mol, is the SI unit of amount of substance. One mole contains exactly 6.022 140 76 × 1023 elementary entities. This number is the fixed numerical value of the Avogadro constant, NA, when expressed in the unit mol−1 and is called the Avogadro number. The amount of substance, symbol n, of a system is a measure of the number of specified elementary entities. An elementary entity may be an atom, a molecule, an ion, an electron, any other particle or specified group of particles.
EMMO c84c6752 6d64 48cc 9500 e54a3c34898d: http://en.wikipedia.org/wiki/Mole_(unit)
EMMO fe015383 afb3 44a6 ae86 043628697aa2: https://doi.org/10.1351/goldbook.M03980

Newton
type: Class
subclass of: Restriction
  has value: N
unit code: NEW
EMMO 1f1b164d ec6a 4faa 8d5e 88bda62316cc: http://qudt.org/vocab/unit/N
EMMO 33ae2d07 5526 4555 a0b4 8f4c031b5652: N
EMMO 6dd685dd 1895 46e4 b227 be9f7d643c25: http://dbpedia.org/resource/Newton
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: SI unit for force.
EMMO c7b62dd7 063a 4c2a 8504 42f7264ba83f: The "Newton" is the SI unit of force. A force of one newton will accelerate a mass of one kilogram at the rate of one meter per second per second. The newton is named for Isaac Newton (1642-1727), the British mathematician, physicist, and natural philosopher. He was the first person to understand clearly the relationship between force (F), mass (m), and acceleration (a) expressed by the formula F = m·a. -- QUDT
EMMO c84c6752 6d64 48cc 9500 e54a3c34898d: http://en.wikipedia.org/wiki/Newton
EMMO fe015383 afb3 44a6 ae86 043628697aa2: https://doi.org/10.1351/goldbook.N04135

Ohm
type: Class
subclass of: Restriction
  has value: Ω
unit code: OHM
EMMO 1f1b164d ec6a 4faa 8d5e 88bda62316cc: http://qudt.org/vocab/unit/OHM
EMMO 33ae2d07 5526 4555 a0b4 8f4c031b5652: Ohm
EMMO 6dd685dd 1895 46e4 b227 be9f7d643c25: http://dbpedia.org/resource/Ohm
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: The SI derived unit of electrical resistance, named after German physicist Georg Simon Ohm.
EMMO c7b62dd7 063a 4c2a 8504 42f7264ba83f: Ω = V/A = H/s
EMMO c84c6752 6d64 48cc 9500 e54a3c34898d: http://en.wikipedia.org/wiki/Ohm
EMMO fe015383 afb3 44a6 ae86 043628697aa2: https://doi.org/10.1351/goldbook.O04280

Pascal
type: Class
subclass of: Restriction
  has value: Pa
unit code: PAL
EMMO 1f1b164d ec6a 4faa 8d5e 88bda62316cc: http://qudt.org/vocab/unit/PA
EMMO 33ae2d07 5526 4555 a0b4 8f4c031b5652: Pa
EMMO 6dd685dd 1895 46e4 b227 be9f7d643c25: http://dbpedia.org/resource/Pascal
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: SI unit for pressure.
EMMO c7b62dd7 063a 4c2a 8504 42f7264ba83f: The SI unit of pressure. The pascal is the standard pressure unit in the MKS metric system, equal to one newton per square meter or one "kilogram per meter per second per second." The unit is named for Blaise Pascal (1623-1662), French philosopher and mathematician, who was the first person to use a barometer to measure differences in altitude. -- QUDT
EMMO c84c6752 6d64 48cc 9500 e54a3c34898d: http://en.wikipedia.org/wiki/Pascal
EMMO fe015383 afb3 44a6 ae86 043628697aa2: https://doi.org/10.1351/goldbook.P04442

Radian
type: Class
subclass of: Restriction
  has value: rad
comment: Dimensionless measurement unit for plane angle.
unit code: C81
EMMO 1f1b164d ec6a 4faa 8d5e 88bda62316cc: http://qudt.org/vocab/unit/RAD
EMMO 33ae2d07 5526 4555 a0b4 8f4c031b5652: rad
EMMO 6dd685dd 1895 46e4 b227 be9f7d643c25: http://dbpedia.org/resource/Radian
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: Measure of plane angle.
EMMO c84c6752 6d64 48cc 9500 e54a3c34898d: http://en.wikipedia.org/wiki/Radian
EMMO fe015383 afb3 44a6 ae86 043628697aa2: https://doi.org/10.1351/goldbook.R05036

Second
type: Class
subclass of: Restriction
  has value: s
unit code: SEC
EMMO 1f1b164d ec6a 4faa 8d5e 88bda62316cc: http://qudt.org/vocab/unit/SEC
EMMO 33ae2d07 5526 4555 a0b4 8f4c031b5652: s
EMMO 6dd685dd 1895 46e4 b227 be9f7d643c25: http://dbpedia.org/resource/Second
EMMO 70fe84ff 99b6 4206 a9fc 9a8931836d84: The second, symbol s, is the SI unit of time. It is defined by taking the fixed numerical value of the caesium frequency ∆νCs, the unperturbed ground-state hyperfine transition frequency of the caesium 133 atom, to be 9192631770 when expressed in the unit Hz, which is equal to s−1.
EMMO c84c6752 6d64 48cc 9500 e54a3c34898d: http://en.wikipedia.org/wiki/Second
EMMO fe015383 afb3 44a6 ae86 043628697aa2: https://doi.org/10.1351/goldbook.S05513

Siemens
type: Class
subclass of: Restriction
  has value: S
unit code: SIE
EMMO 1f1b164d ec6a 4faa 8d5e 88bda62316cc: http://qudt.org/vocab/unit/S
EMMO 33ae2d07 5526 4555 a0b4 8f4c031b5652: S
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: SI unit for electrical conductance.
EMMO c7b62dd7 063a 4c2a 8504 42f7264ba83f: Siemens is the SI unit of electric conductance, susceptance, and admittance. The most important property of a conductor is the amount of current it will carry when a voltage is applied. Current flow is opposed by resistance in all circuits, and by also by reactance and impedance in alternating current circuits. Conductance, susceptance, and admittance are the inverses of resistance, reactance, and impedance, respectively. To measure these properties, the siemens is the reciprocal of the ohm. In other words, the conductance, susceptance, or admittance, in siemens, is simply 1 divided by the resistance, reactance or impedance, respectively, in ohms. The unit is named for the German electrical engineer Werner von Siemens (1816-1892). -- QUDT
EMMO c7b62dd7 063a 4c2a 8504 42f7264ba83f: S = A/V = F/s
EMMO c84c6752 6d64 48cc 9500 e54a3c34898d: https://en.wikipedia.org/wiki/Siemens_(unit)

Sievert
type: Class
subclass of: Restriction
  has value: Sv
unit code: D13
EMMO 1f1b164d ec6a 4faa 8d5e 88bda62316cc: http://qudt.org/vocab/unit/SV
EMMO 33ae2d07 5526 4555 a0b4 8f4c031b5652: Sv
EMMO 6dd685dd 1895 46e4 b227 be9f7d643c25: http://dbpedia.org/resource/Sievert
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: SI unit for equivalent doseof ionizing radiation. Sievert is derived from absorbed dose, but takes into account the biological effectiveness of the radiation, which is dependent on the radiation type and energy.
EMMO c7b62dd7 063a 4c2a 8504 42f7264ba83f: Although the sievert has the same dimensions as the gray (i.e. joules per kilogram), it measures a different quantity. To avoid any risk of confusion between the absorbed dose and the equivalent dose, the corresponding special units, namely the gray instead of the joule per kilogram for absorbed dose and the sievert instead of the joule per kilogram for the dose equivalent, should be used. -- QUDT
EMMO c84c6752 6d64 48cc 9500 e54a3c34898d: http://en.wikipedia.org/wiki/Sievert
EMMO c84c6752 6d64 48cc 9500 e54a3c34898d: https://en.wikipedia.org/wiki/Equivalent_dose
EMMO fe015383 afb3 44a6 ae86 043628697aa2: https://doi.org/10.1351/goldbook.S05658

Steradian
type: Class
subclass of: Restriction
  has value: sr
unit code: D27
EMMO 1f1b164d ec6a 4faa 8d5e 88bda62316cc: http://qudt.org/vocab/unit/SR
EMMO 33ae2d07 5526 4555 a0b4 8f4c031b5652: sr
EMMO 6dd685dd 1895 46e4 b227 be9f7d643c25: http://dbpedia.org/resource/Steradian
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: Dimensionless measurement unit for solid angle.
EMMO c84c6752 6d64 48cc 9500 e54a3c34898d: http://en.wikipedia.org/wiki/Steradian
EMMO fe015383 afb3 44a6 ae86 043628697aa2: https://doi.org/10.1351/goldbook.S05971

Tesla
type: Class
subclass of: Restriction
  has value: T
unit code: D33
EMMO 1f1b164d ec6a 4faa 8d5e 88bda62316cc: http://qudt.org/vocab/unit/T
EMMO 33ae2d07 5526 4555 a0b4 8f4c031b5652: T
EMMO 6dd685dd 1895 46e4 b227 be9f7d643c25: http://dbpedia.org/resource/Tesla
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: SI unit for magnetic flux density or induction.
EMMO c7b62dd7 063a 4c2a 8504 42f7264ba83f: The SI unit of flux density (or field intensity) for magnetic fields (also called the magnetic induction). The intensity of a magnetic field can be measured by placing a current-carrying conductor in the field. The magnetic field exerts a force on the conductor, a force which depends on the amount of the current and on the length of the conductor. One tesla is defined as the field intensity generating one newton of force per ampere of current per meter of conductor. Equivalently, one tesla represents a magnetic flux density of one weber per square meter of area. A field of one tesla is quite strong: the strongest fields available in laboratories are about 20 teslas, and the Earth's magnetic flux density, at its surface, is about 50 microteslas. The tesla, defined in 1958, honors the Serbian-American electrical engineer Nikola Tesla (1856-1943), whose work in electromagnetic induction led to the first practical generators and motors using alternating current. -- QUDT
EMMO c7b62dd7 063a 4c2a 8504 42f7264ba83f: T = V·s·m⁻² = N/(A·m) = Wb/m²
EMMO c84c6752 6d64 48cc 9500 e54a3c34898d: http://en.wikipedia.org/wiki/Tesla_(unit)
EMMO fe015383 afb3 44a6 ae86 043628697aa2: https://doi.org/10.1351/goldbook.T06283

Volt
type: Class
subclass of: Restriction
  has value: V
unit code: VLT
EMMO 1f1b164d ec6a 4faa 8d5e 88bda62316cc: http://qudt.org/vocab/unit/V
EMMO 33ae2d07 5526 4555 a0b4 8f4c031b5652: V
EMMO 6dd685dd 1895 46e4 b227 be9f7d643c25: http://dbpedia.org/resource/Volt
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: SI unit for electric potential difference.
EMMO c7b62dd7 063a 4c2a 8504 42f7264ba83f: The volt is the unit of electric potential difference—electric potential difference is also known as voltage. The size of 1 volt is officially defined as the potential difference between two points of a wire carrying a current of 1 ampere when the power dissipated in the wire is 1 watt.
EMMO c84c6752 6d64 48cc 9500 e54a3c34898d: http://en.wikipedia.org/wiki/Volt
EMMO fe015383 afb3 44a6 ae86 043628697aa2: https://doi.org/10.1351/goldbook.V06634

Watt
type: Class
subclass of: Restriction
  has value: W
unit code: WTT
EMMO 1f1b164d ec6a 4faa 8d5e 88bda62316cc: http://qudt.org/vocab/unit/W
EMMO 33ae2d07 5526 4555 a0b4 8f4c031b5652: W
EMMO 6dd685dd 1895 46e4 b227 be9f7d643c25: http://dbpedia.org/resource/Watt
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: SI unit for power.
EMMO c7b62dd7 063a 4c2a 8504 42f7264ba83f: The SI unit of power. Power is the rate at which work is done, or (equivalently) the rate at which energy is expended. One watt is equal to a power rate of one joule of work per second of time. This unit is used both in mechanics and in electricity, so it links the mechanical and electrical units to one another. In mechanical terms, one watt equals about 0.001 341 02 horsepower (hp) or 0.737 562 foot-pound per second (lbf/s). In electrical terms, one watt is the power produced by a current of one ampere flowing through an electric potential of one volt. The name of the unit honors James Watt (1736-1819), the British engineer whose improvements to the steam engine are often credited with igniting the Industrial Revolution. -- QUDT
EMMO c84c6752 6d64 48cc 9500 e54a3c34898d: http://en.wikipedia.org/wiki/Watt
EMMO fe015383 afb3 44a6 ae86 043628697aa2: https://doi.org/10.1351/goldbook.W06656

Weber
type: Class
subclass of: Restriction
  has value: Wb
unit code: WEB
EMMO 1f1b164d ec6a 4faa 8d5e 88bda62316cc: http://qudt.org/vocab/unit/WB
EMMO 33ae2d07 5526 4555 a0b4 8f4c031b5652: Wb
EMMO 6dd685dd 1895 46e4 b227 be9f7d643c25: http://dbpedia.org/resource/Weber
EMMO 967080e5 2f42 4eb2 a3a9 c58143e835f9: SI unit for magnetic flux.
EMMO c7b62dd7 063a 4c2a 8504 42f7264ba83f: The SI unit of magnetic flux. "Flux" is the rate (per unit of time) at which something crosses a surface perpendicular to the flow. The weber is a large unit, equal to 10⁸ maxwells, and practical fluxes are usually fractions of one weber. The weber is the magnetic flux which, linking a circuit of one turn, would produce in it an electromotive force of 1 volt if it were reduced to zero at a uniform rate in 1 second. In SI base units, the dimensions of the weber are (kg·m²)/(s²·A). The weber is commonly expressed in terms of other derived units as the Tesla-square meter (T·m²), volt-seconds (V·s), or joules per ampere (J/A).
EMMO c84c6752 6d64 48cc 9500 e54a3c34898d: https://en.wikipedia.org/wiki/Weber_(unit)
EMMO fe015383 afb3 44a6 ae86 043628697aa2: https://doi.org/10.1351/goldbook.W06666

qualified cardinality: 1