# Greek Alphabet Letters and Symbol

**List of the letter in the Greek Alphabet (Greek Symbols) and their use in mathematics, science and communication engineering.**

Contents

# Greek Alphabet Letters, Symbol & Characters:

Greek Alphabet is one of the oldest method of **representing constants and variable** in the field of mathematics and science. Greek Letters are widely used to denote the various mathematical constants and values. Letters including (**Beta**, **Alpha**, **Gamma**, **omega**, **Delta**, **theta**, **zeta**, **pi** and many more) are one of the oldest representation of different constant in the field of mathematics, science and communication engineering.

Every Greek Alphabet letter has a unique use, most of them are used for the measurement of Angles, Resistivity, Temperature, density, length, electric conductivity and much more.

Greek alphabet was first used by Johannes Bayer around the year 1600’s and now we have total **24 Greek letters** and in this post we will provide all of those 24 letters with their meaning, However just like the modern English Alphabets, Greek alphabet also have both capital and small versions, and fortunately all of the Greek letters are used for different measurements which means all of these letters are worth understanding.

**The different Greek letters have different use and meaning and in this post we will explain use of every Greek letter, Table down below shows the use of different Greek Letters.**

**Greek Symbol and Character List**

NO: | GREEK LETTER | GREEK SYMBOL | GREEK SYMBOL | USED FOR |
---|---|---|---|---|

CAPITAL | SMALL | |||

1 | Alpha | Α | α | area, Angles, coefficients, absorption factor, attenuation constant. |

2 | Beta | B | β | Angles, coefficients, phase constant |

3 | Gamma | Γ | γ | Complex propagation constant (cap), specific gravity, angles, electrical conductivity, propagation constant |

4 | Delta | Δ | δ | Increment or decrement, determinant (cap), permitting (cap), density, angles |

5 | Epsilon | Ε | ε | Dielectric constant, permittivity, electric intensity |

6 | Zeta | Z | ζ | Coordinates, coefficients |

7 | Eta | Η | η | Intrinsic impedance, efficiency, surface charge density, hysteresis, coordinates |

8 | Theta | Θ | θ | Angular phase displacement, angles, time constant, reluctance |

9 | Iota | Ι | ι | Unit vector |

10 | Kappa | Κ | κ | Susceptibility, coupling coefficient, thermal conductivity |

11 | Lambda | Λ | λ | Permeance (cap), wavelength, attenuation constant |

12 | Mu | Μ | μ | Permeability, amplification factor (in valves/ vacuum tubes), prefix for the micro multiplier. |

13 | Nu | N | ν | Reluctivity, frequency |

14 | Xi | Ξ | ξ | Coordinates |

15 | Omicron | Ο | ο | Magnitude, Position |

16 | Pi | Π | π | Universally used for 3.1416... |

17 | Rho | Ρ | ρ | Resistivity, volume charge density, coordinates |

18 | Sigma | Σ | σ | Summation (cap), surface charge density, complex propagation constant, electrical conductivity, leakage coefficient, deviation |

19 | Tau | Τ | τ | Time constant, volume resistivity, time-phase displacement, transmission factor, density |

20 | Upsilon | Υ | υ | Mass-to-Light ratio, Upsilon particle, labiodental approximant. |

21 | Phi | Φ | φ | Scalar potential (cap), magnetic flux, angles |

22 | Chi | Χ | χ | Electric susceptibility, angles |

23 | Psi | Ψ | ψ | Dielectric flux, phase difference, coordinates, angles |

24 | Omega | Ω | ω | Electrical resistance (cap), solid angle, angular velocity |

**You can download all these Greek Symbols in Image format:**