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Pair production is a nuclear physics process which occurs where a high-energy photon, generally interacting with an atomic nucleus, produces a particle and an antiparticle. It is the chief method by which energy from gamma rays is observed in condensed matter. Electrons and positrons are frequently produced by this process because the light weight of the electron/positron (0.51MeV) allows relatively low-energy gamma rays (>1.02MeV) to create particle pairs.

These interactions were first observed in Patrick Maynard Stuart Blackett's counter-controlled bubble chamber, leading to the 1948 nobel prize for physics.

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Topics: Pair Production, Pair Programming, Paired Disparity Code...

Pair programmingPair programming requires two software engineers to participate in a combined development effort at one workstation. Each member performs the action the other is not currently doing: While one types in unit tests the other thinks about the class that will	Paired disparity codeIn telecommunication, a paired disparity code is a code in which some or all of the characters are represented by two sets of digits of opposite disparity that are used in sequence so as to minimize the total disparity of a longer sequence of digits.	Pair productionPair production is a nuclear physics process which occurs where a high-energy photon, generally interacting with an atomic nucleus, produces a particle and an antiparticle. It is the chief method by which energy from gamma rays is observed in condensed ma
Pair-up puzzleIn pair-up puzzles the player has to match tokens, usually two at a time. The matched tokens are usually taken from the board, and the player wins when the board is empty. Examples of pair-up puzzles Bowls Pairs Solitaire Memory game Board games Puzzles.	Pair gain systemIn telecommunications, a pair-gain system is a network amplifier system used to increase the strength of signals on paired wires installed to reach distances up to about five miles (8 km). A pair-gain system includes an exchange unit and a remote pair-gai	Pair gainA pair gain system is a transmission system that uses concentrators or multiplexers so that fewer wire pairs may be used than would otherwise be required to provide service to a given number of subscribers. Usually used in telephone systems.
Páirc Uí Chaoimh	Pairwise independence	Pair of opposing forces
Paired Comparison Analysis	Pairing function	Pairing

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