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Realizing and disseminating international reference time scales UTC, UTCr and TT(BIPM)

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  • Metrology areas

    • AUV: Acoustics, Ultrasound and Vibrations
      • Committee structure: CCAUV
      • BIPM contact: Dr Gianna Panfilo
    • EM : Electricity and Magnetism
      • Metrologia: Focus on Metrology in Electricity and Magnetism
      • Committee structure: CCEM
      • BIPM contact: Dr Michael Stock
    • L: Length
      • Committee structure: CCL
      • BIPM contact: Dr Gianna Panfilo
    • M: Mass and related quantities
      • Committee structure: CCM
      • BIPM contact: Dr Hao Fang
    • PR: Photometry and Radiometry
    • QM: Chemistry and Biology
      • BIPM contact
    • RI: Ionizing radiation
    • T: Thermometry
    • TF: Time and Frequency
      • Committee structure: CCTF
      • BIPM Time Department Database
      • Time FTP Server
      • BIPM contact: Dr Patrizia Tavella
    • U: The SI (International System of Units)
      • Committee structure: CCU

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Metrology areas

  • AUV: Acoustics, Ultrasound and Vibrations
    • Committee structure: CCAUV
    • BIPM contact: Dr Gianna Panfilo
  • EM : Electricity and Magnetism
    • Metrologia: Focus on Metrology in Electricity and Magnetism
    • Committee structure: CCEM
    • BIPM contact: Dr Michael Stock
  • L: Length
    • Committee structure: CCL
    • BIPM contact: Dr Gianna Panfilo
  • M: Mass and related quantities
    • Committee structure: CCM
    • BIPM contact: Dr Hao Fang
  • PR: Photometry and Radiometry
  • QM: Chemistry and Biology
    • BIPM contact
  • RI: Ionizing radiation
  • T: Thermometry
  • TF: Time and Frequency
    • Committee structure: CCTF
    • BIPM Time Department Database
    • Time FTP Server
    • BIPM contact: Dr Patrizia Tavella
  • U: The SI (International System of Units)
    • Committee structure: CCU

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  • The 2018 revision of the SI
    • Celebrating the vote by the CGPM
    • 26th CGPM (November 2018)
    • 2018 values of the Fundamental Physical Constants
    • Resolution 1 of the 26th CGPM (2018)
    • SI Brochure (2019)
  • World Metrology Day
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