Beta (B, β) is the second letter of the Greek alphabet.
Beta or BETA may also refer to:
Arts, entertainment, and media Films Beta (film), a 1992 Bollywood film directed by Indra Kumar Beta Test (film), a 2016 American science fiction film directed by Nicholas Gyeney The Beta Test, a 2021 American dark comedy directed by Jim Cummings
Fictional entities BETA (Muv-Luv) (Beings of the Extra Terrestrial origin which is Adversary of human race), an alien race from the video game series Muv-Luv β, a classification of strength in the EarthBound, or Mother, series of Nintendo role-playing games Beta, a wolf character in the animated film Storks BETA, an organization in the 1986 TV series The Adventures of the Galaxy Rangers Beta (The Walking Dead), an antagonist in the Walking Dead comic series Beta Hirogen, the second in command of a Hirogen hunting party, as seen in Star Trek: Voyager Beta Quadrant, one of four quadrants in the galaxy in Star Trek , an elf character and the second member of Shadow Garden in the light novel and anime series The Eminence in Shadow Beta, a humanised Dalek from The Evil of the Daleks Beta, a dog character in the film Up
Other uses in arts, entertainment, and media Beta (Magic: The Gathering), the second (revised) part of the first set of the card game Magic: The Gathering Beta chord Beta News Agency, Serbian independent news agency Beta Recordings, a record label headed by John B Lifetime (TV network), pre-launch branded as BETA beta, a combat robot competing in BattleBots Beta, a mountain biking magazine and website launched by Outside (company) in 2021 Minecraft Beta, a development stage of Minecraft
Mathematics, finance, and statistics Beta (finance), the β coefficient in the capital asset pricing model β, the probability of a Type II error in statistics; see Type I and type II errors β-reduction, a reduction rule for lambda calculus Beta distribution, in statistics, a family of continuous probability distributions Beta function, a special function also known as the Euler integral of the first kind Beta invariant, of a matroid Dirichlet beta function Eratosthenes, Greek mathematician nicknamed Beta (Βῆτα) Standardized coefficient or beta coefficient, in statistics, the estimate of an analysis performed on variables that have been standardized so that they have variances of 1
Organisations Beta (motorcycle manufacturer), an Italian off-road motorcycles manufacturer BETA Cargo, a defunct Brazilian airline Beta Technologies, a US electric aircraft manufacturer BETA UAS, drone manufacturer based in Bandung, Indonesia British Equestrian Trade Association, a membership organisation in the UK Broadcasting and Entertainment Trades Alliance, sometimes known by the acronym "BETA" National Beta Club, a high school honor society South Texas Business Education & Technology Academy (BETA)
Places Beta, Ohio, a ghost town in the US Beța, a village in Lopadea Nouă Commune, Alba County, Romania Beta, a village in Mugeni Commune, Harghita County, Romania Beta Israel, a name given to Jewish communities that occupied territories of the Aksumite and Ethiopian (Habesh or Abyssinia) empires Beta (Olt), a tributary of the Olt in Harghita County, Romania Beta, a tributary of the Târnava Mare in Harghita County, Romania
Psychology Beta movement, a perceptual illusion whereby two or more still images are combined by the brain into surmised motion Beta quadra, one of the four quadras in socionics Type-beta, a personality type now commonly referred to as type-B; see Type A and Type B personality theory
Science Biology and medicine Beta (plant), a genus of flowering plants, mostly referred to as beets Beta (grape), a variety of North American grape β1 and β2, or beta-1 and beta-2, adrenergic receptors Beta, a rank in a community of social animals; see Alpha Beta carbon, in organic chemistry, the second carbon atom in a chain when counting from a functional group; see Alpha and beta carbon Beta cell, a type of cell in the pancreas, which produces insulin Beta sheet, a secondary protein structure Beta-endorphin, a kind of neurotransmitter SARS-CoV-2 Beta variant, one of the variants of SARS-CoV-2, the virus that causes COVID-19
Physics Beta (plasma physics), the ratio of thermal to magnetic pressure in plasma Beta (velocity), the speed of an object relative to the speed of light in special relativity Compressibility, a measure of the relative volume change of a fluid or solid as a response to a pressure change (symbol "β") Beta function (physics), also β(g)—a function in quantum field theory Beta particle, a name used to refer to high-energy electrons (β−) or positrons (β+) emitted by certain types of radioactive nuclei Phase Constant (β), in electromagnetics and electrical engineering, used in the theory of plane waves; see Propagation constant Precursor yield fraction, leading to delayed neutrons in nuclear reactors Thermodynamic beta, in thermodynamics and statistical mechanics, a numerical quantity related to the thermodynamic temperature of a system
Other uses in science Hurricane Beta, a 2005 hurricane Tropical Storm Beta (2020), a tropical storm
Sports Beta (climbing), jargon that designates information about a climb Beta Ethniki, the second tier division of the Greek football (soccer) league
Technology Beta (time signal), a time signal service broadcast in the very low frequency range in Russia Beta, the common-emitter current gain of a bipolar junction transistor Betacam, a family of half-inch professional videotape products developed by Sony Betamax, home videocassette tape recording format developed by Sony BETA (programming language) Beta release, or betaware, a phase in software development before an official release Beta mode, flat or reverse-pitch propeller settings used for ground operations in airplanes with turboprop engines Perpetual beta, software or a system that never leaves the beta development stage
Transport Lancia Beta, a car produced by Lancia Beta (1864 barque), a Norwegian barque in service 1880-93
Other uses Beta male (slang), a pejorative term for a man considered as weak and emasculated Beta reader, a person who critiques a written work prior to public release Beta Vukanović (1872–1972), Serbian painter and centenarian Voiced bilabial fricative (β), the voiced bilabial fricative symbol of the International Phonetic Alphabet
See also ß, a German letter that resembles β B3ta, a British humour webcommunity Betta, a genus of fish, often misspelled "beta" Coral the Betta, a character in the Sonic the Hedgehog comics by Archie Beti (disambiguation)