Omega (Greek letter)

Omega (uppercase Ω, lowercase ω) is the 24th and last letter of the Greek alphabet. In the Greek numeric system, it has a value of 800. Pronounced [ɔ:] or 'aw' as in 'raw'.

Symbol uppercase Ω
Astronomy Chemistry Electricity Mathematics term Meteorology Statistics Literary Physics
 * density of the universe, also referred to as the cosmological density parameter. with components of mass density, ΩM, and vacuum energy density, ΩL.
 * designation for the last carbon on the chain in a fatty acid
 * Ohm: SI unit of electrical resistance
 * Siemens (unit), abbreviated S, is the reciprocal of the ohm.
 * Omega constant (Lambert’s W function)
 * Chaitin’s constant: the probability that a randomly selected valid program string is interpreted by a halting
 * Calculus: a 2-D region
 * A theoretical measure of the execution of an algorithm, (e.g. required time or memory) given the problem size n (e.g. the number of items).
 * Stochastic process
 * Used to designate vertical motion in the atmosphere
 * Sample space
 * Set of possible outcomes
 * End or last thing in a series
 * Solid angle or rate of precession in a gyroscope
 * Omega baryons (particle physics)
 * Negatively charged elementary particle with a mass 3270 times the mass of an electron.
 * Omega minus b: a very short-lived unstable meson with mass 1532 times the mass of an electron (aka omega meson)

Symbol lowercase ω
Mathematics
 * The set of all natural numbers