Beta (disambiguation)

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Beta (B, β) is the second letter of the Greek alphabet.

Beta or BETA may also refer to:


  • Betacam, a family of half-inch professional videotape products developed by Sony
  • Betamax, home videocassette tape recording format developed by Sony
  • 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




  • Beta, a rank in a community of social animals; See Alpha
  • Beta-endorphin, a kind of neurotransmitter
  • 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 (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 (plasma physics), the ratio of thermal to magnetic pressure in plasma
  • Beta (velocity), the speed of an object relative to the speed of light
  • 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
  • β, a symbol for compressibility, a measure of the relative volume change of a fluid or solid as a response to a pressure change
  • Thermodynamic beta, in thermodynamics and statistical mechanics—a numerical quantity related to the thermodynamic temperature of a system
  • 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

Mathematics, finance, and statistics[edit]



Media and entertainment[edit]

  • Beta (film), a 1992 Bollywood film directed by Indra Kumar
  • Beta Test (film), a 2016 American film co-written, co-produced, and directed by Nicholas Gyeney.
  • Beta (film), a 2017 film written and directed by Layton Matthews
  • Beta (Magic: The Gathering), the second (revised) part of the first set of the card game Magic: The Gathering
  • β, a classification of strength in the Earthbound, or Mother, series of Nintendo role-playing games
  • Beta chord

Popular culture[edit]

Fictional characters and communities[edit]


  • Beta (climbing), climbing jargon that designates information about a climb
  • Beta Ethniki, the second tier division of the Greek football (soccer) league


Other uses[edit]

See also[edit]

  • B3ta, a British humour webcommunity
  • Perpetual beta, software or a system that never leaves the beta development stage
  • Betta, a genus of fish, often misspelled “beta”
  • ß, a German letter that resembles β