Pair production

Pair" pro*duc"tion

(Physics) The simultaneous creation of a particle and its antiparticle, such as an electron and positron, from a photon; -- usually due to its interaction with the strong field near a nucleus.


(p`"), n. [OF. pus, F. pays, country.] (O. E. Law) The country; the people of the neighborhood.
[1913 Webster]

A trial per pais is a trial by the country, that is, by a jury; and matter in pais is matter triable by the country, or jury.
[1913 Webster]


(p`*s"n), n. [Sp., of the country, native.] 1. (Zol.) The chaparral cock; the roadrunner.

2. A compatriot.

3. A comrade; a pal; a buddy.


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Mon 09th December 2019