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α
|
Alpha
|
Fine structure constant; an angle.
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ß
|
Beta
|
v/c; 1/κBΤ ; an angle.
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γ
|
Gamma
|
E/mc2; an angle.
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τ
|
Tau
|
torque; a rate of force.
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Τ
|
Tau
|
Periodic time.
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Δ
|
Delta
|
'change in . . . ', as in Δx.
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δ
|
Delta
|
An infinitesimal; like Δ but smaller.
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σ
|
Delta
|
Cross section; areal density; conductivity.
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| |
Epsilon
|
An infinitesimal quantity; permittivity.
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e
|
e
|
A small energy, electron.
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ζ
|
Zeta
|
A general parameter.
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η
|
Eta
|
Index of refraction; a meson.
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Θ
|
Null
|
An angle; Debye temperature.
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θ
|
Theta
|
An angle (most common symbol).
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κ
|
Kappa
|
Dielectric constant; thermal conductivity.
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Λ
|
Lambda
|
A rate; a type of baryon.
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λ
|
Lambda
|
Wavelength; a rate; linear density.
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μ
|
Meu
|
Reduced mass; muon; prefix micro.
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|
ν
|
Nu
|
Frequency in cycle/s (Hz); neutrino.
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|
v
|
Nu
|
Rarely used (looks like v).
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|
Ξ
|
Xi
|
A type of baryon.
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|
ξ
|
Xi
|
A general parameter; coherence length.
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|
Π
|
Pi
|
Product operator.
|
|
π
|
Pi
|
3.14159... ; pion (a meson).
|
|
ρ
|
Rho
|
Density per unit volume; resistivity.
|
|
Σ
|
Sigma
|
Summation operator.
|
|
Φ
|
Phi
|
A wave function; an angle.
|
| |
Phi
|
An angle; a wave function.
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|
φ
|
Phi
|
Electrostatic potential.
|
|
χ
|
Chi
|
Susceptibility.
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|
ψ
|
Psi
|
A wave function.
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| |
Mho
|
Used as inductance.
|
|
Ω
|
Ohm
|
Solid angle; angular frequency; a baryon.
|
|
ω
|
Omega
|
Angular frequency (radian/s); a meson.
Cube root of unity.
|