Greek Characters
| Symbol | Name | Meaning | SI Unit of Measure |
|---|---|---|---|
| alpha | angular acceleration | radian per second squared (rad/s²) | |
| beta | velocity in terms of the speed of light c | unitless | |
| gamma | Lorentz factor | unitless | |
| photon | |||
| gamma ray | |||
| shear strain | |||
| Heat capacity ratio | unitless (1) | ||
| delta | a change in a variable (e.g. ) | unitless | |
| Laplace operator | |||
| delta | displacement (usually small) | ||
| epsilon | permittivity | farad per meter (F/m) | |
| strain | unitless | ||
| eta | energy efficiency | unitless | |
| coefficient of viscosity also called simply viscosity |
pascal second (Pa s) | ||
| theta | angular displacement | radian (rad) | |
| kappa | torsion coefficient also called torsion constant |
newton meter per radian (N m/rad) | |
| lambda | cosmological constant | per second squared (s−2) | |
| wavelength | meter (m) | ||
| mu | magnetic moment | ampere square meter (A m²) | |
| coefficient of friction | |||
| dynamic viscosity | |||
| permeability (electromagnetism) | |||
| nu | frequency | hertz (Hz) | |
| kinematic viscosity | |||
| omega | ohm | ||
| omega | angular frequency | radian per second (rad/s) | |
| rho | mass density usually simply called density |
kilogram per cubic meter (kg/m³) | |
| free electric charge density, not including dipole charges bound in a material |
coulomb per cubic meter (C/m³) | ||
| resistivity | |||
| sigma | summation operator | ||
| sigma | electrical conductivity | ||
| normal stress | |||
| tau | torque | newton meter (N m) | |
| shear stress | |||
| time constant | s | ||
| phi | field strength | unit varies depending on context | |
| magnetic flux | |||
| phi | electric potential | ||
| pi | 3.14159... (irrational number) | ||
| psi | wave function | unitless | |
| zeta | damping ratio | unitless |
Read more about this topic: List Of Common Physics Notations
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