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Symbol Name Meaning SI unit of measure alpha: alpha particle: angular acceleration: radian per second squared (rad/s 2) fine-structure constant: unitless beta: velocity in terms of the speed of light c: unitless beta particle: gamma: Lorentz factor: unitless photon: gamma ray: shear strain: radian
Variant kappa Greek word καί written with a handwritten variant of kappa, from the Byzantine period. Kappa (/ ˈ k æ p ə /; [1] uppercase Κ, lowercase κ or cursive ϰ; Greek: κάππα, káppa) is the tenth letter of the Greek alphabet, representing the voiceless velar plosive IPA: sound in Ancient and Modern Greek.
the population mean or expected value in probability and statistics; a measure in measure theory; micro-, an SI prefix denoting 10 −6 (one millionth) Micrometre or micron (retired in 1967 as a standalone symbol, replaced by "μm" using the standard SI meaning) the coefficient of friction in physics; the service rate in queueing theory
The symbol ϑ ("script theta") is a cursive form of theta (θ), frequent in handwriting, and used with a specialized meaning as a technical symbol. The symbol ϰ ("kappa symbol") is a cursive form of kappa (κ), used as a technical symbol. The symbol ("variant pi") is an archaic script form of pi (π), also used as a technical symbol.
In thermal physics and thermodynamics, the heat capacity ratio, also known as the adiabatic index, the ratio of specific heats, or Laplace's coefficient, is the ratio of the heat capacity at constant pressure (C P) to heat capacity at constant volume (C V).
The specific conductance (conductivity), κ (kappa) is the reciprocal of the specific resistance. = = Conductivity is also temperature-dependent. Sometimes the conductance (reciprocical of the resistance) is denoted as G = 1 ⁄ R. Then the specific conductance κ (kappa) is:
The kappa opacity mechanism is the driving mechanism behind the changes in luminosity of many types of pulsating variable stars. The term Eddington valve has been used for this mechanism, but this is increasingly obsolete. [1] Here, the Greek letter kappa (κ) is used to indicate the radiative opacity at any particular depth of the stellar ...
In mechanical engineering, chi is used as a symbol for the reduction factor of relevant buckling loads in the EN 1993, a European Standard for the design of steel structures. In graph theory, a lowercase chi is used to represent a graph's chromatic number. In analytic number theory, chi is used for the Dirichlet character.