• ISO 80000 or IEC 80000, Quantities and units, is an international standard describing the International System of Quantities (ISQ). It was developed and...
    22 KB (2,062 words) - 01:03, 24 April 2024
  • revised and replaced by ISO/IEC 80000. The standard comes in 14 parts: ISO 31-0: General principles (replaced by ISO/IEC 80000-1:2009) ISO 31-1: Space and time...
    7 KB (798 words) - 05:38, 12 February 2024
  • other parts of the ISO 31 standard. ISO 31-0 was withdrawn on 17 November 2009. It is superseded by ISO 80000-1. Other parts of ISO 31 have also been withdrawn...
    10 KB (1,447 words) - 01:58, 11 March 2024
  • and technology. It was superseded in 2009 by ISO 80000-2:2009 and subsequently revised in 2019 as ISO-80000-2:2019. Its definitions include the following:...
    17 KB (149 words) - 00:58, 12 March 2024
  • to space and time. It was superseded in 2006 by ISO 80000-3. Its definitions include: Annex A of ISO 31-1 lists units of space and time based on the foot...
    4 KB (92 words) - 19:59, 16 February 2023
  • light and related electromagnetic radiations. It is superseded by ISO 80000-7. ISO 31-6 was initially published in 1980, and amended in 1985. It received...
    3 KB (175 words) - 15:20, 16 February 2024
  • quantities and units related to heat. It is superseded by ISO 80000-5. Its definitions include: Annex A of ISO 31-4 lists units of heat based on the foot, pound...
    2 KB (82 words) - 04:28, 13 March 2024
  • other countries. Its use to denote division is not recommended in the ISO 80000-2 standard for mathematical notation. The obelus, a historical glyph consisting...
    7 KB (579 words) - 20:26, 12 April 2024
  • quantities and units related to electricity and magnetism. It is superseded by ISO 80000-6. Some of its definitions are below, with values taken from NIST values...
    1 KB (53 words) - 04:29, 13 March 2024
  • 31 that defines names and symbols for quantities and units related to acoustics. It is superseded by ISO 80000-8. Its definitions include: v t e v t e...
    2 KB (39 words) - 19:00, 15 January 2023