international metric system of si units

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  • 8/12/2019 International Metric System of SI Units

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  • 8/12/2019 International Metric System of SI Units

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    13.3.2014 International Metric System of SI Units

    http://www.convertunits.com/SI-units.php

    inductance henry H

    mass flow

    ratekilogram/second kg/s

    mole flow

    ratemole/second mol/s

    power watt W

    pressure pascal Pa

    speed meter/second m/s

    surface

    tensionnewton/meter N/m

    torque newton meter N-m

    voltage volt V

    volume cubic meter m3

    volume flow

    rate

    cubic

    meter/second m3/s

    amount-of-

    substance

    concentration

    mole/cubic

    metermol/m3

    non-SI units used on

    ConvertUnits.com

    Type Name Symbol

    computer data

    storagebyte B

    computer data

    ratebit/second bit/s

    U.S. currency dollar $

    SI prefixes

    Factor Prefix Symbol

    1024 1E24 yotta Y

    1021 1E21 zetta Z

    1018 1E18 exa E

    1015 1E15 peta P

    1012 1E12 tera T

    109 1E9 giga G

    106 1E6 mega M

    103 1E3 kilo k

    102 1E2 hecto h

    101 1E1 deca da

    101 1E1 deka da

    10-1 1E-1 deci d

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    13.3.2014 International Metric System of SI Units

    http://www.convertunits.com/SI-units.php

    10-2 1E-2 centi c

    10-3 1E-3 m illi m

    10-6 1E-6 m icro

    10-9 1E-9 nano n

    10-12 1E-12 pico p

    10-15 1E-15 femto f

    10-18 1E-18 atto a

    10-21 1E-21 zepto z

    10-24 1E-24 yocto y

    International System of

    Units

    The International System of Units

    (abbreviated SI) is the modern form of

    the metric system. It is the world's mostwidely used system of units, both in

    everyday comm erce and in science.

    The older metric system included

    several groupings of units. The SI was

    developed in 1960 from the m etre-

    kilogram-second (mks) system, rather

    than the centimetre-gram-second (cgs)

    system which, in turn, had many

    variants.

    The SI introduced several newly named

    units. The SI is not static; it is a livingset of standards where units are

    created and definitions are modified

    with international agreement as

    measurement technology progresses .

    With few exceptions, the system is us ed

    in every country in the world , and many

    countries do not maintain official

    definitions of other units. In the United

    States, industrial use of SI is

    increasing, but popular use is s till

    limited. In the United Kingdom,

    conversion to metric units is officialpolicy but not yet complete. Those

    countries that still recognize non-SI

    units (e.g. the U.S. and UK) have

    redefined their traditional non-SI units in

    terms of SI units.

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    13.3.2014 International Metric System of SI Units

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