Name

UPPER

CASE

lower

case

Engineering Usage Definition

Alpha

  Α

 α

Absorption factor, angles, angular acceleration, attenuation constant, common-base current-amplification factor, deviation of state parameter, temperature coefficient of resistance, thermal expansion coefficient, thermal diffusivity

Beta

Β

β

Angles, common-emitter current amplification factor, flux density, phase constant, wavelength constant

Gamma

Γ

γ

Electrical conductivity, Grueneisen parameter

Delta

Δ

δ

Angles, damping coefficient (decay constant), decrement, increment, secondary emission ratio

Epsilon

Ε

ε

Capacitivity, dielectric coefficient, electric field intensity, electron energy, emissivity, permittivity, base of natural logarithms (2.7128)

Zeta

Ζ

ζ

Coefficients, coordinates, impedance

Eta

Η

η

Chemical potential, dielectric susceptibility (intrinsic capacitance), efficiency, hysteresis, intrinsic impedance of a medium, intrinsic standoff ratio

Theta

Θ

θ

Angle of rotation, angles, angular phase displacement, reluctance, thermal resistance, transit angle

Iota

Ι

ι

Inertia

Kappa

Κ

κ

Coupling coefficient, susceptibility

Lambda

Λ

λ

Line density of charge, permanence, photo-sensitivity , wavelength

Mu

Μ

μ

Amplification factor, magnetic permeability, micron, mobility, permeability, prefix micro

Nu

Ν

ν

Reflectivity

Xi

Ξ

ξ

Output coefficient

Omicron

Ο

ο

Pi

Π

π

Peltier coefficient, ratio of circumference to diameter (3.1416)

Rho

Ρ

ρ

Reflection coefficient, reflection factor, resistivity, volume density of electric charge

Sigma

Σ

σ

Conductivity, Stefan-Boltzmann constant, summation, surface density of charge

Tau

Τ

τ

Period, propagation constant, Thomson coefficient, time constant, time-phase displacement, transmission factor

Upsilon

Υ

υ

Admittance

Phi

Φ

φ

Angles, coefficient of performance, contact potential, magnetic flux, phase angle, phase displacement, radiant flux

Chi

Χ

χ

Angles

Psi

Ψ

ψ

Angles, dielectric flux, displacement flux, phase difference

Omega

Ω

ω

Angular frequency, angular velocity, Ohms, resistance, solid angle