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the motion acquired by a particle as a result of its emission of a photon or other particle
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



in firearms, the reverse movement of the barrel or breech caused by the energy of the powder gases when a pistol, rifle, or artillery gun is fired. The movement goes in the direction opposite to the direction of firing.

Recoil is manifested as a force that affects the firer or gun mount. In automatic weapons, the recoil is used for reloading (opening the breech, ejecting the used cartridge, loading the next round, closing the breech, and setting the firing pin).

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.


McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
In terminology used by scientists, the black hole may have "recoiled" - a phenomenon that occurs when two relatively smaller supermassive black holes collide and merge to form a single, larger supermassive black hole.
After having his retina surgically reattached, Bob made sure none of his firearms recoiled very hard or fast, mostly shooting gas-operated shotguns, since they stretch out recoil time, and never had another problem.
Upon firing, as the barrel recoiled rearward and the empty case was extracted, a lifter brought a fresh round up into alignment with the breech.