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Greek Alphabet / Letters / Symbols

Greek letters are commonly used as numerical prefixes and to represent physical and mathematical quantities. After only four years of engineering school, we have all written most of them hundreds of times. Most of us know the entire Greek alphabet my heart, kind of like the learning a language by immersion method - you do it without knowing. Unfortunately, as with a language, a lot of it disappears after many years of sparse usage.

Included in the table are common uses for the Greek symbols in engineering. All are used on occasion for representing angles.

If you know of others that should be added, please send me an e-mail.





AlphaAα 
BetaΒβmodulation index
GammaΓγreflection coefficient
DeltaΔδdifference
EpsilonΕεdielectric coefficient, permittivity
ZetaΖζ 
EtaΗη 
ThetaΘθvector angle
IotaΙι 
KappaΚκ 
LambdaΛλwavelength
MuΜμpermeability
NuΝνfrequency
XiΞξ 
OmicronΟο 
PiΠπ 
RhoΡρresistivity
SigmaΣσ 
TauΤτtime, group delay
UpsilonΥυ 
PhiΦφ 
ChiΧχ 
PsiΨψ 
OmegaΩωresistance, impedance


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