This document 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. Where appropriate, conversion factors are also given.

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    • Standard
      41 pages
      English language
    • e-Library read for
      1 day
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    • Standard
      34 pages
      English language
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    • Standard
      32 pages
      French language
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    • Draft
      43 pages
      English language
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      1 day

This document gives names, symbols, definitions and units for quantities of space and time. Where
appropriate, conversion factors are also given.

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    • Standard
      18 pages
      English language
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      1 day

This document gives names, symbols and definitions for characteristic numbers used in the description
of transport and transfer phenomena.

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    • Standard
      58 pages
      English language
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      1 day

EN-ISO 80000-8 gives names, symbols, definitions and units for quantities of acoustics. Where appropriate, conversion factors are also given.

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    • Standard
      16 pages
      English language
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      1 day

This document gives names, symbols, definitions and units for quantities of acoustics. Where appropriate, conversion factors are also given.

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    • Standard
      16 pages
      English language
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      1 day

This document gives names, symbols, definitions and units for quantities of acoustics. Where appropriate, conversion factors are also given.

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    • Standard
      9 pages
      English language
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    • Standard
      10 pages
      French language

This document gives names, symbols, definitions and units for quantities of acoustics. Where appropriate, conversion factors are also given.

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    • Standard
      9 pages
      English language

This document gives names, symbols, definitions and units for quantities of condensed matter physics.
Where appropriate, conversion factors are also given.

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    • Standard
      22 pages
      English language
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      1 day

This document gives names, symbols, definitions and units for quantities of physical chemistry and
molecular physics. Where appropriate, conversion factors are also given.

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    • Standard
      25 pages
      English language
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This document gives names, symbols, definitions and units for quantities used in atomic and nuclear
physics. Where appropriate, conversion factors are also given.

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    • Standard
      53 pages
      English language
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This document specifies mathematical symbols, explains their meanings, and gives verbal equivalents
and applications.
This document is intended mainly for use in the natural sciences and technology, but also applies to
other areas where mathematics is used.

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    • Standard
      45 pages
      English language
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      1 day

This document gives names, symbols, definitions and units for quantities of mechanics. Where
appropriate, conversion factors are also given.

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      22 pages
      English language
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This document gives names, symbols, definitions and units for quantities of thermodynamics. Where
appropriate, conversion factors are also given.

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    • Standard
      23 pages
      English language
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This document gives names, symbols and definitions for characteristic numbers used in the description of transport and transfer phenomena.

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    • Standard
      50 pages
      English language
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    • Standard
      51 pages
      French language

ISO 80000-3:2019 gives names, symbols, definitions and units for quantities of space and time. Where appropriate, conversion factors are also given.

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    • Standard
      11 pages
      English language

This document gives names, symbols, definitions and units for quantities of space and time. Where appropriate, conversion factors are also given.

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    • Standard
      11 pages
      English language
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    • Standard
      10 pages
      French language

ISO 80000-11:2019 gives names, symbols and definitions for characteristic numbers used in the description of transport and transfer phenomena.

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    • Standard
      50 pages
      English language

This document gives names, symbols, definitions and units for quantities of mechanics. Where appropriate, conversion factors are also given.

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    • Standard
      22 pages
      English language
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This document gives names, symbols, definitions and units for quantities of physical chemistry and molecular physics. Where appropriate, conversion factors are also given.

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    • Standard
      25 pages
      English language
    • e-Library read for
      1 day

This document specifies mathematical symbols, explains their meanings, and gives verbal equivalents and applications.
This document is intended mainly for use in the natural sciences and technology, but also applies to other areas where mathematics is used.

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    • Standard
      45 pages
      English language
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This document gives names, symbols, definitions and units for quantities used in atomic and nuclear physics. Where appropriate, conversion factors are also given.

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    • Standard
      53 pages
      English language
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      1 day

This document gives names, symbols, definitions and units for quantities of thermodynamics. Where appropriate, conversion factors are also given.

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    • Standard
      23 pages
      English language
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      1 day

This document gives names, symbols, definitions and units for quantities of condensed matter physics. Where appropriate, conversion factors are also given.

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    • Standard
      22 pages
      English language
    • e-Library read for
      1 day

This document gives names, symbols, definitions and units for quantities used in atomic and nuclear physics. Where appropriate, conversion factors are also given.

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    • Standard
      45 pages
      English language

This document gives names, symbols, definitions and units for quantities of thermodynamics. Where appropriate, conversion factors are also given.

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    • Standard
      16 pages
      English language

This document gives names, symbols, definitions and units for quantities of thermodynamics. Where appropriate, conversion factors are also given.

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    • Standard
      16 pages
      English language
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    • Standard
      16 pages
      French language

This document gives names, symbols, definitions and units for quantities used in atomic and nuclear physics. Where appropriate, conversion factors are also given.

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    • Standard
      45 pages
      English language
    • sale 15% off
    • Standard
      44 pages
      French language

This document specifies mathematical symbols, explains their meanings, and gives verbal equivalents and applications. This document is intended mainly for use in the natural sciences and technology, but also applies to other areas where mathematics is used.

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    • Standard
      37 pages
      English language
    • sale 15% off
    • Standard
      35 pages
      French language

This document gives names, symbols, definitions and units for quantities of condensed matter physics. Where appropriate, conversion factors are also given.

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    • Standard
      15 pages
      English language
    • sale 15% off
    • Standard
      16 pages
      French language

This document 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. Where appropriate, conversion factors are also given.

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    • Standard
      34 pages
      English language

This document specifies mathematical symbols, explains their meanings, and gives verbal equivalents and applications.
This document is intended mainly for use in the natural sciences and technology, but also applies to other areas where mathematics is used.

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    • Standard
      37 pages
      English language

This document 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. Where appropriate, conversion factors are also given.

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    • Standard
      41 pages
      English language
    • e-Library read for
      1 day
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    • Standard
      34 pages
      English language
    • sale 15% off
    • Standard
      32 pages
      French language
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    • Draft
      43 pages
      English language
    • e-Library read for
      1 day

This document gives names, symbols, definitions and units for quantities of mechanics. Where appropriate, conversion factors are also given.

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    • Standard
      15 pages
      English language

This document gives names, symbols, definitions and units for quantities of mechanics. Where appropriate, conversion factors are also given.

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    • Standard
      15 pages
      English language
    • sale 15% off
    • Standard
      14 pages
      French language

This document gives names, symbols, definitions and units for quantities of physical chemistry and molecular physics. Where appropriate, conversion factors are also given.

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    • Standard
      17 pages
      English language
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    • Standard
      17 pages
      French language

This document gives names, symbols, definitions and units for quantities of physical chemistry and molecular physics. Where appropriate, conversion factors are also given.

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    • Standard
      17 pages
      English language

This document gives names, symbols, definitions and units for quantities of condensed matter physics. Where appropriate, conversion factors are also given.

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    • Standard
      15 pages
      English language

Defines rules for the use and writing of letter symbols for telecommunications and electronics.

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    • Standard
      76 pages
      English language
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      1 day

IEC 60027-2:2019 is applicable to telecommunications and electronics. It gives names and symbols for quantities and their units.

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    • Standard
      149 pages
      English and French language

IEC 60375:2018 specifies the rules for signs and reference directions and reference polarities for electric currents and voltages in electric networks.

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    • Standard
      40 pages
      English language
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      1 day

This International Standard defines physical quantities used in the field thermal performance of
buildings and building elements, and gives the corresponding Symbols and units.
NOTE Because the scope of this International Standard is restricted to thermal performance and energy use
in the built environment, some of the definitions given in clause 2 differ from those given ISO 80000-5 Quantities
and units - Part 5: Thermodynamics (ISO 80000-5:2007).

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    • Standard
      20 pages
      English language
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IEC 60375:2018 specifies the rules for signs and reference directions and reference polarities for electric currents and voltages in electric networks.

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    • Standard
      74 pages
      English and French language

ISO 7345:2018 defines physical quantities used in the thermal performance of buildings and building elements, and gives the corresponding symbols and units.
NOTE Because the scope of this document is restricted to thermal performance and energy use in the built environment, some of the definitions it contains differ from those given ISO 80000-5.

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    • Standard
      20 pages
      English language
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ISO 7345:2018 defines physical quantities used in the thermal performance of buildings and building elements, and gives the corresponding symbols and units. NOTE Because the scope of this document is restricted to thermal performance and energy use in the built environment, some of the definitions it contains differ from those given ISO 80000-5.

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    • Standard
      12 pages
      English language
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    • Standard
      12 pages
      French language

IEC TS 62720:2017(E) specifies identifiers for units to support computer-based processing of product data. It provides a survey of quantities with associated collections of internationally standardized as well as non–standardized units used in business and science.
It covers any standard or non-standard units of measure currently in use, in two or more distinct ethno-linguistic groups or nations, at least in one domain of industry, for which an explicit method of conversion to a known standard ...
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    • Technical specification
      87 pages
      English language

In IEC 80000-6:2008, names, symbols, and definitions for quantities and units of electromagnetism are given. Where appropriate, conversion factors are also given. International Standard IEC 80000-6 has been prepared by IEC technical committee 25: Quantities and units, and their letter symbols in close cooperation with ISO/TC 12, Quantities, units, symbols, conversion factors. This first edition of IEC 80000-6 cancels and replaces the second edition of ISO 31-5, published in 1992, and its amendme...view more

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    • Standard
      37 pages
      English language
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      1 day
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    • Standard – translation
      36 pages
      Slovenian language
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      1 day

IEC TR 62690:2014 which is a technical report provides information concerning the behaviour of fibres and cables when exposed to hydrogen effects. The application of multimode fibres is very rarely subject to hydrogen effects. For that reason, this technical report only highlights the effects of hydrogen to single-mode fibres. Keywords: hydrogen effects, single-mode fibres

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    • Technical report
      9 pages
      English language