The International System of Units (SI)

Cover
......Page 1
THE INTERNATIONAL SYSTEM OF UNITS (SI) - Title Page......Page 2
Foreword......Page 4
Note from the BIPM† on copyright and the use of the English text......Page 5
The BIPM and the Meter Convention......Page 6
Table of Contents......Page 10
Preface to the 8th edition......Page 12
1.1 Quantities and units......Page 14
1.2 The International System of Units (SI) and the correspondingsystem of quantities......Page 15
1.3 Dimensions of quantities......Page 16
1.4 Coherent units, derived units with special names,and the SI prefixes......Page 17
1.6 Units for quantities that describe biological effects......Page 18
1.8 Historical note......Page 19
2.1.1 Definitions......Page 22
2.1.1.2 Unit of mass (kilogram)......Page 23
2.1.1.4 Unit of electric current (ampere)......Page 24
2.1.1.6 Unit of amount of substance (mole)......Page 25
2.1.2 Symbols for the seven base units......Page 27
2.2.1 Derived units expressed in terms of base units......Page 28
2.2.2 Units with special names and symbols; units that incorporate specialnames and symbols......Page 29
2.2.3 Units for dimensionless quantities, also called quantities of dimensionone......Page 32
3.1 SI prefixes......Page 33
3.2 The kilogram......Page 35
4.1 Non-SI units accepted for use with the SI, and units based onfundamental constants......Page 36
4.3 The curie, roentgen, rad, and rem......Page 42
5.1 Unit symbols......Page 44
5.3.1 Value and numerical value of a quantity, and the use of quantitycalculus......Page 45
5.3.4 Formatting numbers, and the decimal marker......Page 47
5.3.7 Stating values of dimensionless quantities, or quantities of dimensionone......Page 48
Appendix 1. Decisions of the CGPM and the CIPM......Page 50
Table of Contents of Appendix 1......Page 52
Sanction of the international prototypes of the meter and the kilogram(CR, 34-38)*......Page 55
Declaration concerning the definition of the liter (CR, 38-39)*......Page 56
Definitions of photometric units (PV, 20, 119-122)*......Page 57
Triple point of water; thermodynamic scale with a single fixed point;unit of quantity of heat (joule) (CR, 55 and 63)......Page 58
Proposal for establishing a practical system of units of measurement(CR, 64)......Page 59
Definition of the thermodynamic temperature scale (CR, 79)*......Page 60
Definition of the unit of time (second) (PV, 25, 77)*......Page 61
Definition of the meter (CR, 85)*......Page 62
Système International d’Unités (CR, 87)*......Page 63
Atomic standard of frequency (CR, 93)......Page 65
SI prefixes femto and atto (CR, 94)*......Page 66
SI unit of thermodynamic temperature (kelvin) (CR, 104 and Metrologia,1968, 4, 43)*......Page 67
SI derived units (CR, 105 and Metrologia, 1968, 4, 44)*......Page 68
Système International d’Unités, Rules for application of Resolution 12 ofthe 11th CGPM (1960) (PV, 37, 30 and Metrologia, 1970, 6, 66)*......Page 69
International Atomic Time, function of CIPM (CR, 77-78 and Metrologia,1972, 8, 35)......Page 70
Recommended value for the speed of light (CR, 103 and Metrologia, 1975,11, 179-180)......Page 71
SI prefixes peta and exa (CR, 106 and Metrologia, 1975, 11, 180-181)*......Page 72
Special name for the SI unit of dose equivalent (sievert) (CR, 100 andMetrologia, 1980, 16, 56)*......Page 73
SI supplementary units (radian and steradian) (PV, 48, 24 and Metrologia,1981, 17, 72)*......Page 74
Definition of the meter (CR, 97 and Metrologia, 1984, 20, 25)......Page 75
Forthcoming adjustment to the representations of the volt and of theohm (CR, 100 and Metrologia, 1988, 25, 115)......Page 76
Representation of the volt by means of the Josephson effect (PV, 56, 44and Metrologia, 1989, 26, 69)......Page 77
The International Temperature Scale of 1990 (PV, 57, 115 and Metrologia,1990, 27, 13)......Page 78
Elimination of the class of supplementary units in the SI (CR, 223 andMetrologia, 1996, 33, 83)......Page 79
Special name for the SI derived unit mole per second, the katal, for theexpression of catalytic activity (CR, 334-335 and Metrologia, 2000, 37, 95)......Page 80
Revision of the practical realization of the definition of the meter (PV, 70,194-204 and Metrologia, 40, 103-133)......Page 81
Dose equivalent (PV, 70, 205)......Page 83
Symbol for the decimal marker (CR, 381 and Metrologia, 2004, 41, 104)......Page 84
Clarification of the definition of the kelvin, unit of thermodynamictemperature (PV, 94, in press and Metrologia, 2006, 43, 177-178)......Page 85
Revision of the Mise en pratique list of recommended radiations (PV, 94,in press and Metrologia, 2006, 43, 178)......Page 86
Appendix 2. Practical realization of the definitions of someimportant units......Page 88
1 Actinic action spectrum......Page 90
2 Measurement of photochemical or photobiological quantities and their corresponding units......Page 91
1 Acronyms for laboratories, committees and conferences*......Page 92
2 Acronyms for scientific terms......Page 93
Index......Page 94