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1.2 Regeling luchtvaarteenheden BES

International standardization began with an 1870 meeting of 15 States in that led to the International Metric Convention in 1875 and the establishment of a permanent International Bureau of Weights and Measures. A General Conference on Weights and Measures (CGPM) was also constituted to handle all international matters concerning the metric system. In 1889 the first meeting of the CGPM legalized the old prototype of the metre and the kilogram as the international standard for unit of length and unit of mass respectively. Other units were agreed in subsequent meetings and by its 10th Meeting in 1954, the CGPM had adopted a rationalized and coherent system of units based on the metrekilogram-second-ampere (MKSA) system which had been developed earlier, plus the addition of the Kelvin as the unit of temperature and the candela as the unit of luminous intensity.

The 11th CGPM, held in 1960 and in which 36 States participated, adopted the name International System of Units (SI) and laid down rules for the prefixes, the derived and supplementary units and other matters, thus establishing comprehensive specifications for international units of measurement.

The 12th CGPM in 1964 made some refinements in the system, and the 13th CGPM in 1967 redefined the second, renamed the unit of temperature as the Kelvin (K) and revised the definition of the candela. The 14th CGPM in 1971 added a seventh base unit, the mole (mol) and approved the pascal (Pa) as a special name for the S1 unit of pressure or stress, the Newton (N) per square metre (m2) and the siemens (S) as a special name for the unit of electrical conductance. In 1975 the CGPM adopted the becquerel (Bq) as the unit of the activity of radionuclides and the gray (Gy) as the unit for absorbed dose.

Regeling
Regeling luchtvaarteenheden BES
Soort
Ministeriële regeling BES
Geldend vanaf
10-10-2010
BWB-id
BWBR0028673
Versie
2010-10-10_0

In de hele regeling · Officiële tekst op wetten.overheid.nl