International System of Units, SI Units, Roman Numerals

GENERAL REFERENCES Roman numerals, SI units, International System of Units, mole, electric current, ampere, length, meter, luminous intensity, candela, mass, kilogram, thermodynamic, temperature, Kelvin, time, second, inductance. acceleration, angular acceleration, radian, angular velocity, area, square meter, density, kilogram per cubic meter, dynamic viscosity, Pascal second, electric capacitance, Farad, electric charge, Coulomb, electric conductance, Siemens. electric field strength, volt per meter, electric potential, volt, electric resistance, Ohm, electromotive force, Volt, energy, Joule, force, Newton, frequency, Hertz, heat capacity, heat flux density, illuminance, lux, luminance, candela. luminous flux, lumen, magnetic field strength, magnetic flux, weber, magnetic flux density, tesla, momentum, plane angle, radian, potential difference, volt, power, watt, pressure, Pascal, electricity, coulomb, joule, radiant flux. Henry, irradiance, kinematic viscosity, solid angle, steradian, heat capacity, kilogram Kelvin, stress, surface tension, thermal conductivity, velocity, viscosity, voltage.

Prefixes of International System of Units

SI Units (Système International d'Unités)
International System of Units

Unit of	Base SI Units

Amount of substance	= Mole
Electric current	= Ampere
Length	= Meter
Luminous intensity	= Candela
Mass	= Kilogram
Thermodynamic temperature	= Kelvin
Time	= Second

Unit of	Derived or Supplementary SI Units

Acceleration	= Meter per second squared
Angular acceleration	= Radian per second squared
Angular velocity	= Radian per second
Area	= Square meter
Density	= Kilogram per cubic meter
Dynamic viscosity	= Pascal second
Electric capacitance	= Farad
Electric charge	= Coulomb
Electric conductance	= Siemens
Electric field strength	= Volt per meter
Electric potential	= Volt
Electric resistance	= Ohm
Electromotive force	= Volt
Energy	= Joule
Force	= Newton
Frequency	= Hertz
Heat capacity	= Joule per Kelvin
Heat flux density	= Watt per square meter
Illuminance	= Lux
Inductance	= Henry
Irradiance	= Watt per square meter
Kinematic viscosity	= Square meter per second
Luminance	= Candela per square meter
Luminous flux	= Lumen
Magnetic field strength	= Ampere per meter
Magnetic flux	= Weber
Magnetic flux density	= Tesla
Momentum	= Kilogram meter per second
Plane angle	= Radian
Potential difference	= Volt
Power	= Watt
Pressure	= Pascal
Quantity of electricity	= Coulomb
Quantity of heat	= Joule
Radiant flux	= Watt
Solid angle	= Steradian
Specific heat capacity	= Joule per kilogram Kelvin
Stress	= Newton per square meter
Surface tension	= Newton per meter
Thermal conductivity	= Watt per meter Kelvin
Velocity	= Meter per second
Viscosity	= Newton-second per square meter
Voltage	= Volt
Volume	= Cubic meter
Work	= Joule

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Roman Numerals

In Roman numerals, a letter preceding a letter of greater value subtracts from it, for example

IX = 9
XL = 40

A letter preceding a letter of equal or lesser value adds to it, for example

XX = 20
XI = 11

A bar placed over a Roman numeral has the effect of multiplying the number by 1000, for example

= 8000
= 15000

Number	Roman Numeral

1 =	I
2 =	II
3 =	III
4 =	IV
5 =	V
6 =	VI
7 =	VII
8 =	VIII
9 =	IX
10 =	X
11 =	XI
12 =	XII
13 =	XIII
14 =	XIV
15 =	XV
16 =	XVI
17 =	XVII
18 =	XVIII
19 =	XIX
20 =	XX
21 =	XXI
22 =	XXII
23 =	XXIII
24 =	XXIV
25 =	XXV
26 =	XXVI
27 =	XXVII
28 =	XXVIII
29 =	XXIX
30 =	XXX
40 =	XL
50 =	L
60 =	LX
70 =	LXX
80 =	LXXX
90 =	XC
100 =	C
200 =	CC
300 =	CCC
400 =	CD
500 =	D
600 =	DC
700 =	DCC
800 =	DCCC
900 =	CM
1000 =	M
1500 =	MD
1900 =	MCM
2000 =	MM
3000 =	MMM

Examples of Roman Numeral

49 =	XLIX
96 =	XCVI
115 =	CXV
248 =	CCXLVIII
569 =	DLXIX
873 =	DCCCLXXIII
1355 =	MCCCLV
1967 =	MCMLXVII
1994 =	MCMXCIV
2003 =	MMIII
2004 =	MMIV
2010 =	MMX

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