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The International System of Units

By Taylor, Barry N.

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Book Id: WPLBN0000661629
Format Type: PDF eBook
File Size: 813.13 KB.
Reproduction Date: 2005
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Title: The International System of Units  
Author: Taylor, Barry N.
Volume:
Language: English
Subject: Science., Physics, Physics--Research
Collections: Physics Literature
Historic
Publication Date:
Publisher:

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Taylor, B. N. (n.d.). The International System of Units. Retrieved from http://community.worldlibrary.net/


Description
Physics Literature

Excerpt
Foreword: The International System of Units, universally abbreviated SI, is the modern metric system of measurement. Long the dominant system used in science, the SI is rapidly becoming the dominant measurement system used in international commerce. In recognition of this fact and the increasing global nature of the marketplace, the Omnibus Trade and Competitiveness Act of 1988, which changed the name of the National Bureau of Standards (NBS) to the National Institute of Standards and Technology (NIST) and gave to NIST the added task of helping U.S. industry increase its competitiveness, designates ?the metric system of measurement as the preferred system of weights and measures for United States trade and commerce.? ...

Table of Contents
Contents Page Foreword. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iii Preface to the 7th edition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv 1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.1 Historical note . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.2 Two classes of SI units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.3 The SI prefixes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.4 System of quantities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1.5 SI units in the framework of general relativity. . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1.6 Legislation on units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2 SI units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.1 SI base units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.1.1 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.1.1.1 Unit of length (meter) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.1.1.2 Unit of mass (kilogram) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.1.1.3 Unit of time (second). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.1.1.4 Unit of electric current (ampere). . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.1.1.5 Unit of thermodynamic temperature (kelvin) . . . . . . . . . . . . . . . . . 7 2.1.1.6 Unit of amount of substance (mole) . . . . . . . . . . . . . . . . . . . . . . . . 8 2.1.1.7 Unit of luminous intensity (candela). . . . . . . . . . . . . . . . . . . . . . . . 8 2.1.2 Symbols for base units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.2 SI derived units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.2.1 Units expressed in terms of base units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.2.2 Units with special names and symbols; units which incorporate units with special names and symbols . . . . . . . . . . . . . . . . . . . 10 2.2.3 Units for dimensionless quantities, quantities of dimension one . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 3 Decimal multiples and submultiples of SI units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 3.1 SI prefixes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 3.2 The kilogram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 4 Units outside the SI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 4.1 Units used with the SI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 4.2 Other non-SI units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

 

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