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ISO/IEC 80000

August 19, 2023

ISO 80000 or IEC 80000, Quantities and units, is an international standard describing the International System of Quantities (ISQ). It was developed and promulgated jointly by the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC). It serves as a style guide for using physical quantities and units of measurement, formulas involving them, and their corresponding units, in scientific and educational documents for worldwide use. The ISO/IEC 80000 family of standards was completed with the publication of Part 1 in November 2009.[1][2]

Overview

By 2021, ISO/IEC 80000 comprised 13 parts, two of which (parts 6 and 13) were developed by IEC and the remaining 11 were developed by ISO, with a further three parts (15, 16 and 17) under development. Part 14 was withdrawn.

Part Year Name Replaces Status
ISO 80000-1[3] 2009 General ISO 31-0, IEC 60027-1 and IEC 60027-3 published
ISO 80000-2[4] 2019 Mathematics ISO 31-11, IEC 60027-1 published
ISO 80000-3[5] 2019 Space and time ISO 31-1 and ISO 31-2 published
ISO 80000-4[6] 2019 Mechanics ISO 31-3 published
ISO 80000-5[7] 2019 Thermodynamics ISO 31-4 published
IEC 80000-6[8] 2022 Electromagnetism ISO 31-5 published
ISO 80000-7[9] 2019 Light and radiation ISO 31-6 published
ISO 80000-8[10] 2020 Acoustics ISO 31-7 published
ISO 80000-9[11] 2019 Physical chemistry and molecular physics ISO 31-8 published
ISO 80000-10[12] 2019 Atomic and nuclear physics ISO 31-9 and ISO 31-10 published
ISO 80000-11[13] 2019 Characteristic numbers ISO 31-12 published
ISO 80000-12[14] 2019 Condensed matter physics ISO 31-13 published
IEC 80000-13[15] 2008 Information science and technology subclauses 3.8 and 3.9 of IEC 60027-2:2005 published
IEC 80000-14[16] 2008 Telebiometrics related to human physiology IEC 60027-7 withdrawn
IEC 80000-15[17] Logarithmic and related quantities under development
IEC 80000-16[18] Printing and writing rules under development
IEC 80000-17[19] Time dependency under development

Subject areas

By 2021 the 80000 standard had 13 published parts.[20][21]

Part 1: General

ISO 80000-1:2009 replaced ISO 31-0:1992 and ISO 1000:1992.[22] It gives general information and definitions concerning quantities, systems of quantities, units, quantity and unit symbols, and coherent unit systems, especially the International System of Quantities (ISQ) and the International System of Units (SI).[3] The text of the informative sections of this document is publicly available.[22] ISO 80000-1:2009 has been withdrawn and is superseded by 80000-1:2022.

Part 2: Mathematics

ISO 80000-2:2019 revised ISO 80000-2:2009,[4] which superseded ISO 31-11.[23] It specifies mathematical symbols, explains their meanings, and gives verbal equivalents and applications. The text of the informative sections of this document is publicly available.[24]

Part 3: Space and time

ISO 80000-3:2019 revised ISO 80000-3:2006,[5] which supersedes ISO 31-1 and ISO 31-2.[25] It gives names, symbols, definitions and units for quantities of space and time. The text of this document is publicly available.[26]

A definition of the decibel, included in the original 2006 publication, was omitted in the 2019 revision, leaving ISO/IEC 80000 without a definition of this unit; a new part of the standard, IEC 80000-15 (Logarithmic and related quantities), is under development.

Part 4: Mechanics

ISO 80000-4:2019 revised ISO 80000-4:2006,[6] which superseded ISO 31-3.[27] It gives names, symbols, definitions and units for quantities of mechanics. The text of this document is publicly available.[28]

Part 5: Thermodynamics

ISO 80000-5:2019 revised ISO 80000-5:2007,[7] which superseded ISO 31-4.[29] It gives names, symbols, definitions and units for quantities of thermodynamics. The text of this document is publicly available.[30]

Part 6: Electromagnetism

IEC 80000-6:2022 revised IEC 80000-6:2008,[8] which superseded ISO 31-5[31] as well as IEC 60027-1. It gives names, symbols, and definitions for quantities and units of electromagnetism. The text of the informative sections of this document is publicly available.[32]

Part 7: Light and radiation

ISO 80000-7:2019 revised ISO 80000-7:2008,[9] which superseded ISO 31-6.[33] It gives names, symbols, definitions and units for quantities used for light and optical radiation in the wavelength range of approximately 1 nm to 1 mm. The text of this document is publicly available.[34]

Part 8: Acoustics

ISO 80000-8:2020 revised ISO 80000-8:2007,[35] which revised ISO 31-7:1992.[36] It gives names, symbols, definitions and units for quantities of acoustics. The text of the informative sections of this document are publicly available.[37]

It has a foreword, scope introduction, scope, normative references (of which there are none), as well as terms and definitions. It includes definitions of sound pressure, sound power and sound exposure, and their corresponding levels: sound pressure level, sound power level and sound exposure level. It includes definitions of the following quantities:

Part 13: Information science and technology

IEC 80000-13:2008 was reviewed and confirmed in 2022 and published in 2008, and replaced subclauses 3.8 and 3.9 of IEC 60027-2:2005 and IEC 60027-3.[15] It defines quantities and units used in information science and information technology, and specifies names and symbols for these quantities and units. It has a scope; normative references; names, definitions and symbols; and prefixes for binary multiples.

Quantities defined in this standard are:

  • traffic intensity [A]: number of simultaneously busy resources in a particular pool of resources
  • traffic offered intensity [A0]: traffic intensity ... of the traffic that would have been generated by the users of a pool of resources if their use had not been limited by the size of the pool
  • traffic carried intensity [Y]: traffic intensity ... of the traffic served by a particular pool of resources
  • mean queue length [L, (Ω)]: time average of queue length
  • loss probability [B]: probability for losing a call attempt
  • waiting probability [W]: probability for waiting for a resource
  • call intensity, calling rate [λ]: number of call attempts over a specified time interval divided by the duration of this interval
  • completed call intensity [μ]: call intensity ... for the call attempts that result in the transmission of an answer signal
  • storage capacity, storage size [M]
  • equivalent binary storage capacity [Me]
  • transfer rate [r, (ν)]
  • period of data elements [T]
  • binary digit rate, bit rate [rb, rbit (νb, νbit)]
  • period of binary digits, bit period [Tb, Tbit]
  • equivalent binary digit rate, equivalent bit rate [re, (νe)]
  • modulation rate, line digit rate [rm, u]
  • quantizing distortion power [TQ]
  • carrier power [Pc, C]
  • signal energy per binary digit [Eb, Ebit]
  • error probability [P]
  • Hamming distance [dn]
  • clock frequency, clock rate [fcl]
  • decision content [Da]
  • information content [I(x)]
  • entropy [H]
  • maximum entropy [H0, (Hmax)]
  • relative entropy [Hr]
  • redundancy [R]
  • relative redundancy [r]
  • joint information content [I(x, y)]
  • conditional information content [I(x|y)]
  • conditional entropy, mean conditional information content, average conditional information content [H(X|Y)]
  • equivocation [H(X∣Y)]
  • irrelevance [C]
  • transinformation content [T(x, y)]
  • mean transinformation content [T]
  • character mean entropy [H′]
  • average information rate [H*]
  • character mean transinformation content [T′]
  • average transinformation rate [T*]
  • channel capacity per character; channel capacity [C′]
  • channel time capacity; channel capacity [C*]

The Standard also includes definitions for units relating to information technology, such as the erlang (E), bit (bit), octet (o), byte (B), baud (Bd), shannon (Sh), hartley (Hart) and the natural unit of information (nat).

Clause 4 of the Standard defines standard binary prefixes used to denote powers of 1024 as 10241 (kibi-), 10242 (mebi-), 10243 (gibi-), 10244 (tebi-), 10245 (pebi-), 10246 (exbi-), 10247 (zebi-) and 10248 (yobi-).

International System of Quantities

Main article: International System of Quantities

Part 1 of ISO 80000 introduces the International System of Quantities and describes its relationship with the International System of Units (SI). Specifically, its introduction states "The system of quantities, including the relations among the quantities used as the basis of the units of the SI, is named the International System of Quantities, denoted 'ISQ', in all languages." It further clarifies that "ISQ is simply a convenient notation to assign to the essentially infinite and continually evolving and expanding system of quantities and equations on which all of modern science and technology rests. ISQ is a shorthand notation for the 'system of quantities on which the SI is based'."

Units of the ISO and IEC 80000 series

The standard includes all SI units but is not limited to only SI units. Units that form part of the standard but not the SI include the units of information storage (bit and byte), units of entropy (shannon, natural unit of information and hartley), and the erlang (a unit of traffic intensity).

The standard includes all SI prefixes as well as the binary prefixes kibi-, mebi-, gibi-, etc., originally introduced by the International Electrotechnical Commission to standardise binary multiples of byte such as mebibyte (MiB), for 10242 bytes, to distinguish them from their decimal counterparts such as megabyte (MB), for precisely one million (10002) bytes. In the standard, the application of the binary prefixes is not limited to units of information storage. For example, a frequency ten octaves above one hertz, i.e., 210 Hz (1024 Hz), is one kibihertz (1 KiHz).[38] These binary prefixes were standardized first in a 1999 addendum to IEC 60027-2. The harmonized IEC 80000-13:2008 standard cancels and replaces subclauses 3.8 and 3.9 of IEC 60027-2:2005, which had defined the prefixes for binary multiples. The only significant change in IEC 80000-13 is the addition of explicit definitions for some quantities.

See also

References

  1. ^ Standards Catalogue TC/12 Quantities and Units
  2. ^ Schirn, Alexandra (9 January 2023). "ISO 80000-1:2022- Quantities And Units - ANSI Blog". The ANSI Blog. Retrieved 16 May 2023.
  3. ^ a b "ISO 80000-1:2009". International Organization for Standardization. Retrieved 15 September 2019.
  4. ^ a b "ISO 80000-2:2019". International Organization for Standardization. Retrieved 15 September 2019.
  5. ^ a b "ISO 80000-3:2019". International Organization for Standardization. Retrieved 23 October 2019.
  6. ^ a b "ISO 80000-4:2019". International Organization for Standardization. Retrieved 15 September 2019.
  7. ^ a b "ISO 80000-5:2019". International Organization for Standardization. Retrieved 15 September 2019.
  8. ^ a b "IEC 80000-6:2022". International Organization for Standardization. Retrieved 20 November 2022.
  9. ^ a b "ISO 80000-7:2019". International Organization for Standardization. Retrieved 23 October 2019.
  10. ^ "ISO 80000-8:2020". International Organization for Standardization. Retrieved 20 March 2020.
  11. ^ "ISO 80000-9:2019". International Organization for Standardization. Retrieved 15 September 2019.
  12. ^ "ISO 80000-10:2019". International Organization for Standardization. Retrieved 15 September 2019.
  13. ^ "ISO 80000-11:2019". International Organization for Standardization. Retrieved 11 February 2020.
  14. ^ "ISO 80000-12:2019". International Organization for Standardization. Retrieved 15 September 2019.
  15. ^ a b "IEC 80000-13:2008". International Organization for Standardization. Retrieved 24 April 2020.
  16. ^ "IEC 80000-14:2008". International Organization for Standardization. Retrieved 15 September 2019.
  17. ^ "IEC/CD 80000-15". International Organization for Standardization. Retrieved 24 April 2022.
  18. ^ "IEC/CD 80000-16". International Organization for Standardization. Retrieved 1 May 2021.
  19. ^ "IEC/CD 80000-17". International Organization for Standardization. Retrieved 1 May 2021.
  20. ^ "International standards for quantities and units are under revision". EE Publishers. 31 January 2017.
  21. ^ "Standards by ISO/TC 12 – Quantities and units". International Organization for Standardization. Retrieved 24 April 2020.
  22. ^ a b "ISO 80000-1:2009(en) Quantities and units – Part 1: General". International Organization for Standardization. Retrieved 2 August 2020.
  23. ^ "ISO 80000-2:2009". International Organization for Standardization. Retrieved 15 September 2019.
  24. ^ "ISO 80000-2:2019(en) Quantities and units – Part 2: Mathematics". International Organization for Standardization. Retrieved 23 October 2019.
  25. ^ "ISO 80000-3:2006". International Organization for Standardization. Retrieved 20 July 2013.
  26. ^ "ISO 80000-3:2019(en) Quantities and units – Part 3: Space and time". International Organization for Standardization. Retrieved 23 October 2019.
  27. ^ "ISO 80000-4:2006". International Organization for Standardization. Retrieved 15 September 2019.
  28. ^ "ISO 80000-4:2019 Quantities and units – Part 4: Mechanics". International Organization for Standardization. Retrieved 23 October 2019.
  29. ^ "ISO 80000-5:2007". International Organization for Standardization. Retrieved 15 September 2019.
  30. ^ "ISO 80000-5:2019(en) Quantities and units – Part 5: Thermodynamics". International Organization for Standardization. Retrieved 23 October 2019.
  31. ^ "IEC 80000-6:2008". International Organization for Standardization. Retrieved 20 November 2022.
  32. ^ "ISO 80000-6:2022(en,fr) Quantities and units – Part 6: Electromagnetism". International Organization for Standardization. Retrieved 21 November 2022.
  33. ^ "ISO 80000-7:2008". International Organization for Standardization. Retrieved 15 September 2019.
  34. ^ "ISO 80000-7:2019(en) Quantities and units – Quantities and units — Part 7: Light and radiation". International Organization for Standardization. Retrieved 25 March 2021.
  35. ^ "ISO 80000-8:2007". International Organization for Standardization. Retrieved 23 April 2020.
  36. ^ "ISO 31-7:1992". International Organization for Standardization. Retrieved 23 April 2020.
  37. ^ "ISO 80000-8:2020(en) Quantities and units – Part 8: Acoustics". International Organization for Standardization. Retrieved 23 April 2020.
  38. ^ Ainslie, Michael A.; Halvorsen, Michele B.; Robinson, Stephen P. (January 2022) [2021-11-09]. "A terminology standard for underwater acoustics and the benefits of international standardization". IEEE Journal of Oceanic Engineering. IEEE. 47 (1): 179–200. Bibcode:2022IJOE...47..179A. doi:10.1109/JOE.2021.3085947. eISSN 1558-1691. ISSN 0364-9059. S2CID 243948953. Retrieved 20 December 2022. (22 pages)

External links

  • BIPM SI Brochure
  • ISO TC12 standards – Quantities, units, symbols, conversion factors
  • NIST Special Publication 330 – The International System of Units
  • NIST Special Publication 811 – Guide for the Use of the International System of Units

August 19, 2023
80000, 80000, 80000, quantities, units, international, standard, describing, international, system, quantities, developed, promulgated, jointly, international, organization, standardization, international, electrotechnical, commission, serves, style, guide, us. ISO 80000 or IEC 80000 Quantities and units is an international standard describing the International System of Quantities ISQ It was developed and promulgated jointly by the International Organization for Standardization ISO and the International Electrotechnical Commission IEC It serves as a style guide for using physical quantities and units of measurement formulas involving them and their corresponding units in scientific and educational documents for worldwide use The ISO IEC 80000 family of standards was completed with the publication of Part 1 in November 2009 1 2 Contents 1 Overview 2 Subject areas 2 1 Part 1 General 2 2 Part 2 Mathematics 2 3 Part 3 Space and time 2 4 Part 4 Mechanics 2 5 Part 5 Thermodynamics 2 6 Part 6 Electromagnetism 2 7 Part 7 Light and radiation 2 8 Part 8 Acoustics 2 9 Part 13 Information science and technology 3 International System of Quantities 4 Units of the ISO and IEC 80000 series 5 See also 6 References 7 External linksOverview EditBy 2021 ISO IEC 80000 comprised 13 parts two of which parts 6 and 13 were developed by IEC and the remaining 11 were developed by ISO with a further three parts 15 16 and 17 under development Part 14 was withdrawn Part Year Name Replaces StatusISO 80000 1 3 2009 General ISO 31 0 IEC 60027 1 and IEC 60027 3 publishedISO 80000 2 4 2019 Mathematics ISO 31 11 IEC 60027 1 publishedISO 80000 3 5 2019 Space and time ISO 31 1 and ISO 31 2 publishedISO 80000 4 6 2019 Mechanics ISO 31 3 publishedISO 80000 5 7 2019 Thermodynamics ISO 31 4 publishedIEC 80000 6 8 2022 Electromagnetism ISO 31 5 publishedISO 80000 7 9 2019 Light and radiation ISO 31 6 publishedISO 80000 8 10 2020 Acoustics ISO 31 7 publishedISO 80000 9 11 2019 Physical chemistry and molecular physics ISO 31 8 publishedISO 80000 10 12 2019 Atomic and nuclear physics ISO 31 9 and ISO 31 10 publishedISO 80000 11 13 2019 Characteristic numbers ISO 31 12 publishedISO 80000 12 14 2019 Condensed matter physics ISO 31 13 publishedIEC 80000 13 15 2008 Information science and technology subclauses 3 8 and 3 9 of IEC 60027 2 2005 publishedIEC 80000 14 16 2008 Telebiometrics related to human physiology IEC 60027 7 withdrawnIEC 80000 15 17 Logarithmic and related quantities under developmentIEC 80000 16 18 Printing and writing rules under developmentIEC 80000 17 19 Time dependency under developmentSubject areas EditBy 2021 the 80000 standard had 13 published parts 20 21 Part 1 General Edit ISO 80000 1 2009 replaced ISO 31 0 1992 and ISO 1000 1992 22 It gives general information and definitions concerning quantities systems of quantities units quantity and unit symbols and coherent unit systems especially the International System of Quantities ISQ and the International System of Units SI 3 The text of the informative sections of this document is publicly available 22 ISO 80000 1 2009 has been withdrawn and is superseded by 80000 1 2022 Part 2 Mathematics Edit ISO 80000 2 2019 revised ISO 80000 2 2009 4 which superseded ISO 31 11 23 It specifies mathematical symbols explains their meanings and gives verbal equivalents and applications The text of the informative sections of this document is publicly available 24 Part 3 Space and time Edit ISO 80000 3 2019 revised ISO 80000 3 2006 5 which supersedes ISO 31 1 and ISO 31 2 25 It gives names symbols definitions and units for quantities of space and time The text of this document is publicly available 26 A definition of the decibel included in the original 2006 publication was omitted in the 2019 revision leaving ISO IEC 80000 without a definition of this unit a new part of the standard IEC 80000 15 Logarithmic and related quantities is under development Part 4 Mechanics Edit ISO 80000 4 2019 revised ISO 80000 4 2006 6 which superseded ISO 31 3 27 It gives names symbols definitions and units for quantities of mechanics The text of this document is publicly available 28 Part 5 Thermodynamics Edit ISO 80000 5 2019 revised ISO 80000 5 2007 7 which superseded ISO 31 4 29 It gives names symbols definitions and units for quantities of thermodynamics The text of this document is publicly available 30 Part 6 Electromagnetism Edit IEC 80000 6 2022 revised IEC 80000 6 2008 8 which superseded ISO 31 5 31 as well as IEC 60027 1 It gives names symbols and definitions for quantities and units of electromagnetism The text of the informative sections of this document is publicly available 32 Part 7 Light and radiation Edit ISO 80000 7 2019 revised ISO 80000 7 2008 9 which superseded ISO 31 6 33 It gives names symbols definitions and units for quantities used for light and optical radiation in the wavelength range of approximately 1 nm to 1 mm The text of this document is publicly available 34 Part 8 Acoustics Edit ISO 80000 8 2020 revised ISO 80000 8 2007 35 which revised ISO 31 7 1992 36 It gives names symbols definitions and units for quantities of acoustics The text of the informative sections of this document are publicly available 37 It has a foreword scope introduction scope normative references of which there are none as well as terms and definitions It includes definitions of sound pressure sound power and sound exposure and their corresponding levels sound pressure level sound power level and sound exposure level It includes definitions of the following quantities logarithmic frequency range static pressure sound pressure sound particle displacement sound particle velocity sound particle acceleration volume flow rate volume velocity sound energy density sound energy sound power sound intensity sound exposure characteristic impedance for longitudinal waves acoustic impedance sound pressure level sound power level sound exposure level reverberation timePart 13 Information science and technology Edit IEC 80000 13 2008 was reviewed and confirmed in 2022 and published in 2008 and replaced subclauses 3 8 and 3 9 of IEC 60027 2 2005 and IEC 60027 3 15 It defines quantities and units used in information science and information technology and specifies names and symbols for these quantities and units It has a scope normative references names definitions and symbols and prefixes for binary multiples Quantities defined in this standard are traffic intensity A number of simultaneously busy resources in a particular pool of resources traffic offered intensity A0 traffic intensity of the traffic that would have been generated by the users of a pool of resources if their use had not been limited by the size of the pool traffic carried intensity Y traffic intensity of the traffic served by a particular pool of resources mean queue length L W time average of queue length loss probability B probability for losing a call attempt waiting probability W probability for waiting for a resource call intensity calling rate l number of call attempts over a specified time interval divided by the duration of this interval completed call intensity m call intensity for the call attempts that result in the transmission of an answer signal storage capacity storage size M equivalent binary storage capacity Me transfer rate r n period of data elements T binary digit rate bit rate rb rbit nb nbit period of binary digits bit period Tb Tbit equivalent binary digit rate equivalent bit rate re ne modulation rate line digit rate rm u quantizing distortion power TQ carrier power Pc C signal energy per binary digit Eb Ebit error probability P Hamming distance dn clock frequency clock rate fcl decision content Da information content I x entropy H maximum entropy H0 Hmax relative entropy Hr redundancy R relative redundancy r joint information content I x y conditional information content I x y conditional entropy mean conditional information content average conditional information content H X Y equivocation H X Y irrelevance C transinformation content T x y mean transinformation content T character mean entropy H average information rate H character mean transinformation content T average transinformation rate T channel capacity per character channel capacity C channel time capacity channel capacity C The Standard also includes definitions for units relating to information technology such as the erlang E bit bit octet o byte B baud Bd shannon Sh hartley Hart and the natural unit of information nat Clause 4 of the Standard defines standard binary prefixes used to denote powers of 1024 as 10241 kibi 10242 mebi 10243 gibi 10244 tebi 10245 pebi 10246 exbi 10247 zebi and 10248 yobi International System of Quantities EditMain article International System of Quantities Part 1 of ISO 80000 introduces the International System of Quantities and describes its relationship with the International System of Units SI Specifically its introduction states The system of quantities including the relations among the quantities used as the basis of the units of the SI is named the International System of Quantities denoted ISQ in all languages It further clarifies that ISQ is simply a convenient notation to assign to the essentially infinite and continually evolving and expanding system of quantities and equations on which all of modern science and technology rests ISQ is a shorthand notation for the system of quantities on which the SI is based Units of the ISO and IEC 80000 series EditThe standard includes all SI units but is not limited to only SI units Units that form part of the standard but not the SI include the units of information storage bit and byte units of entropy shannon natural unit of information and hartley and the erlang a unit of traffic intensity The standard includes all SI prefixes as well as the binary prefixes kibi mebi gibi etc originally introduced by the International Electrotechnical Commission to standardise binary multiples of byte such as mebibyte MiB for 1024 2 bytes to distinguish them from their decimal counterparts such as megabyte MB for precisely one million 1000 2 bytes In the standard the application of the binary prefixes is not limited to units of information storage For example a frequency ten octaves above one hertz i e 210 Hz 1024 Hz is one kibihertz 1 KiHz 38 These binary prefixes were standardized first in a 1999 addendum to IEC 60027 2 The harmonized IEC 80000 13 2008 standard cancels and replaces subclauses 3 8 and 3 9 of IEC 60027 2 2005 which had defined the prefixes for binary multiples The only significant change in IEC 80000 13 is the addition of explicit definitions for some quantities See also EditInternational Vocabulary of Metrology International System of Units BIPM publishes freely available information on SI units NIST official U S representative for SI publishes freely available guide to use of SIReferences Edit Standards Catalogue TC 12 Quantities and Units Schirn Alexandra 9 January 2023 ISO 80000 1 2022 Quantities And Units ANSI Blog The ANSI Blog Retrieved 16 May 2023 a b ISO 80000 1 2009 International Organization for Standardization Retrieved 15 September 2019 a b ISO 80000 2 2019 International Organization for Standardization Retrieved 15 September 2019 a b ISO 80000 3 2019 International Organization for Standardization Retrieved 23 October 2019 a b ISO 80000 4 2019 International Organization for Standardization Retrieved 15 September 2019 a b ISO 80000 5 2019 International Organization for Standardization Retrieved 15 September 2019 a b IEC 80000 6 2022 International Organization for Standardization Retrieved 20 November 2022 a b ISO 80000 7 2019 International Organization for Standardization Retrieved 23 October 2019 ISO 80000 8 2020 International Organization for Standardization Retrieved 20 March 2020 ISO 80000 9 2019 International Organization for Standardization Retrieved 15 September 2019 ISO 80000 10 2019 International Organization for Standardization Retrieved 15 September 2019 ISO 80000 11 2019 International Organization for Standardization Retrieved 11 February 2020 ISO 80000 12 2019 International Organization for Standardization Retrieved 15 September 2019 a b IEC 80000 13 2008 International Organization for Standardization Retrieved 24 April 2020 IEC 80000 14 2008 International Organization for Standardization Retrieved 15 September 2019 IEC CD 80000 15 International Organization for Standardization Retrieved 24 April 2022 IEC CD 80000 16 International Organization for Standardization Retrieved 1 May 2021 IEC CD 80000 17 International Organization for Standardization Retrieved 1 May 2021 International standards for quantities and units are under revision EE Publishers 31 January 2017 Standards by ISO TC 12 Quantities and units International Organization for Standardization Retrieved 24 April 2020 a b ISO 80000 1 2009 en Quantities and units Part 1 General International Organization for Standardization Retrieved 2 August 2020 ISO 80000 2 2009 International Organization for Standardization Retrieved 15 September 2019 ISO 80000 2 2019 en Quantities and units Part 2 Mathematics International Organization for Standardization Retrieved 23 October 2019 ISO 80000 3 2006 International Organization for Standardization Retrieved 20 July 2013 ISO 80000 3 2019 en Quantities and units Part 3 Space and time International Organization for Standardization Retrieved 23 October 2019 ISO 80000 4 2006 International Organization for Standardization Retrieved 15 September 2019 ISO 80000 4 2019 Quantities and units Part 4 Mechanics International Organization for Standardization Retrieved 23 October 2019 ISO 80000 5 2007 International Organization for Standardization Retrieved 15 September 2019 ISO 80000 5 2019 en Quantities and units Part 5 Thermodynamics International Organization for Standardization Retrieved 23 October 2019 IEC 80000 6 2008 International Organization for Standardization Retrieved 20 November 2022 ISO 80000 6 2022 en fr Quantities and units Part 6 Electromagnetism International Organization for Standardization Retrieved 21 November 2022 ISO 80000 7 2008 International Organization for Standardization Retrieved 15 September 2019 ISO 80000 7 2019 en Quantities and units Quantities and units Part 7 Light and radiation International Organization for Standardization Retrieved 25 March 2021 ISO 80000 8 2007 International Organization for Standardization Retrieved 23 April 2020 ISO 31 7 1992 International Organization for Standardization Retrieved 23 April 2020 ISO 80000 8 2020 en Quantities and units Part 8 Acoustics International Organization for Standardization Retrieved 23 April 2020 Ainslie Michael A Halvorsen Michele B Robinson Stephen P January 2022 2021 11 09 A terminology standard for underwater acoustics and the benefits of international standardization IEEE Journal of Oceanic Engineering IEEE 47 1 179 200 Bibcode 2022IJOE 47 179A doi 10 1109 JOE 2021 3085947 eISSN 1558 1691 ISSN 0364 9059 S2CID 243948953 Retrieved 20 December 2022 1 22 pages External links EditBIPM SI Brochure ISO TC12 standards Quantities units symbols conversion factors NIST Special Publication 330 The International System of Units NIST Special Publication 811 Guide for the Use of the International System of Units Retrieved from https en wikipedia org w index php title ISO IEC 80000 amp oldid 1169944490, wikipedia, wiki, book, books, library,

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