Greek Alphabet

Α, α	Alpha	Ι, ι	Iota	Ρ, ρ	Rho
Β, β	Beta	Κ, κ	Kappa	Σ, σ	Sigma
Γ, γ	Gamma	Λ, λ	Lambda	Τ, τ	Tau
Δ, δ	Delta	Μ, μ	Mu	Υ, υ	Upsilon
Ε, ε	Epsilon	Ν, ν	Nu	Φ, φ	Phi
Ζ, ζ	Zeta	Ξ, ξ	Xi	Χ, χ	Chi
Η, η	Eta	Ο, ο	Omicron	Ψ, ψ	Psi
Θ, θ	Theta	Π, π	Pi	Ω, ω	Omega

SI Units

Physical Quantity	Name of Unit	Symbol
	base units
Length (l)	meter	m
Mass (m)	kilogram	kg
Time (t)	second	s
Temperature (T)	Kelvin	K
Electric Current (I)	Ampere	A
Luminous Intensity (φ)	candela	cd
Amount of Substance	mole	mol
	derived units
Area (A)	square meter	m^2
Volume (V)	cubic meter	m^3
Frequency (f)	hertz	Hz [s^-1]
Mass Density, Density (D)	kilogram per cubic meter	kg/m^3
Speed, velocity (v)	meter per second	m/s
Angular velocity (ω)	radian per second	rad/s
Acceleration (a)	meter per second squared	m/s^2
Angular Acceleration (α)	radian per second squared	rad/s^2
Force (F)	Newton	N [kg·m/s^2]
Pressure (p)	Pascal	Pa [N/m^2]
Kinematic viscosity	square meter per second	m^2/s
Dynamic viscosity	Newton-second per square meter	N·s/m^2

Physical Quantity	Name of Unit	Symbol
Energy (E)	Joule	J [kg·m^2/s^2]
Power (P)	Watt	W [j/s]
Electric Charge (q)	Coulomb	C [A·s]
Electric Potential (V)	Volt	V [J/C, W/A]
Electric field strength	Volt per meter	V/m [N/C]
Electric resistance	Ohm	Ω [V/A]
Capacitance	Farad	F [A·s/V]
Magnetic flux	Weber	Wb [V·s]
Inductance	Henry	H [V·s/A]
Magnetic flux density	Tesla	T [Wb/m^2]
Magnetic field strength	Ampere per meter	A/m
Magnetomotive force	Ampere	A
Luminous flux	Lumen	lm [cd·sr]
Luminance	Candela per square meter	cd/m^2
Illuminance	Lux	lx [lm/m^2]
Wave number	1 per meter	m^-1
Entropy	Joule per Kelvin	J/K
Specific heat capacity	Joule per kilogram-Kelvin	J/kg·K
Thermal conductivity	Watt per meter-Kelvin	W/m·K
Radiant intensity	Watt per steradian	W/sr
Activity (of a radioactive source)	Becquerel	Bq [s^-1]
Radiation dose	gray	J/kg
Radiation dose equivalent	sievert	J/kg
	supplementary units
Plane angle	radian	rad
Solid angle	steradian	sr

Molecular Bond Prefixes

1-	mono	6-	hexa
2-	di	7-	hepta
3-	tri	8-	octa
4-	tetra	9-	nona
5-	penta	10-	deca

Hierarchy of Numbers

Name	American-French	English-German
Ten	10	10
Hundred	10^2	10^2
Thousand	10^3	10^3
Million	10^6	10^6
Billion	10^9	10^12
Trillion	10^12	10^18
Quadrillion	10^15	10^24
Quintillion	10^18	10^30
Sextillion	10^21	10^36
Septillion	10^24	10^42
Octillion	10^27	10^48
Nonillion	10^30	10^54
Decillion	10^33	10^60
Undecillion	10^36	10^66
Duodecillion	10^39	10^72
Tredecillion	10^42	10^78
Quatuordecillion	10^45	10^84
Quindecillion	10^48	10^90
Sexdecillion	10^51	10^96
Septendecillion	10^54	10^102
Octodecillion	10^57	10^108
Novemdecillion	10^60	10^114
Vigintillion	10^63	10^120
Googol	10^100
Googolplex	10^googol

SI Prefixes

Factor	Prefix	Symbol	Factor	Prefix	Symbol
10^24	yotta	Y	10^-1	deci	d
10^21	zetta	Z	10^-2	centi	c
10^18	exa	E	10^-3	milli	m
10^15	peta	P	10^-6	micro	μ
10^12	tera	T	10^-9	nano	n
10^9	giga	G	10^-12	pico	p
10^6	mega	M	10^-15	femto	f
10^3	kilo	k	10^-18	atto	a
10^2	hecto	h	10^-20	yocto	y
10^1	deca	da	10^-21	zepto	z

Fundamental Physical Constants

Name	Symbol	Value
Speed of light	c	2.99792458 ×10^8 m/s
Magnitude of charge of electron	e	1.60217733(49) ×10^-19 C
Gravitational constant	G	6.67259(85) ×10^-11 N·m^2/kg^2
Planck’s constant	h	6.6260755(40) ×10^-34 J·s
Boltzmann constant	k	1.380658(12) ×10^-23 J/K
Avogadro’s number	NA	6.0221367(36) ×10^23 molecules/mol
Gas constant	R	8.314510(70) J/mol·K
Mass of electron	me	9.1093897(54) ×10^-31 kg
Mass of proton	mp	1.6726231(10) ×10^-27 kg
Mass of neutron	mn	1.6749286(10) ×10^-27 kg
Permeability of free space	μ0	4π ×10^-7 Wb/A·m
Permeability of free space	ε0 = 1/μoc^2 1/4πε0	8.854187817… ×10^-12 C^2/N·m^2 8.987551787…×10^9 N·m^2/C^2

Other Physical Constants

Name	Symbol	Value
Mechanical equivalent of heat		4.186 J/cal (15° calorie)
Standard atmospheric pressure	1 atm	1.01325 ×10^5 Pa
Absolute zero	0 K	-273.15°C
Electron volt	1 eV