FACTOID # 4: Just 1% of the houses in Nevada were built before 1939.
 
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Encyclopedia > Recoil
An early naval cannon design, allowing the gun to roll backwards a small distance when firing

The recoil when firing a gun is the backward momentum of a gun, which is equal to the forward momentum of the bullet or shell, due to conservation of momentum. It has to be absorbed by for example the wrist, the shoulder or the carriage. Image File history File links Download high resolution version (1280x960, 450 KB) Please see the file description page for further information. ... Image File history File links Download high resolution version (1280x960, 450 KB) Please see the file description page for further information. ... 155 mm M198 howitzer U.S. Army soldier with a compact M249 variant USS Iowa (BB-61) fires a full broadside of nine 16/50 and six 5/38 guns during a target exercise near Vieques Island, Puerto Rico, 1 July 1984. ... In physics, momentum is the product of the mass and velocity of an object. ... .357 Magnum cartridges, containing bullets. ... A shell is a projectile, which, as opposed to a bullet, is not solid but contains an explosive or other filling, though modern usage includes large projectiles without a filling which are properly termed shot. ... In physics, a conservation law states that a particular measurable property of an isolated physical system does not change as the system evolves. ... In human anatomy, the wrist is the flexible and narrower connection between the forearm and the hand. ... The human upper arm Grays Fig. ...


For handguns it has to be limited to avoid breaking one's wrist, see also cartridge. A handgun is a firearm small enough to be carried and used in one hand. ... Rimmed, centerfire . ...


It should be noted that the impact to the target can be no greater than the impact of the recoil, due to the law of conservation of momentum. However, the smaller size of the bullet, compared to the gun-and-shooter system, allows significantly higher energy to be imparted to the bullet than to the shooter. This is what gives guns their lethal effect. See physics of firearms for a more detailed discussion. For the viewpoint of physics (dynamics, to be exact), a firearm, as are most weapons, is a system for delivering maximum destructive energy to the target with minimum delivery of energy and momentum back to the shooter. ...


Hollywood depictions of firearm victims being thrown through plate-glass windows are inaccurate, as were this to be the case, the shooter would also be thrown backwards with equal force. However, gunshot victims frequently do collapse when shot, but this is usually due to the effect of the energy of the bullet on their body systems, not the momentum of the bullet pushing them over. Of course this does not apply if the victim is hit by heavy weapons fire such as aircraft cannon, where the momentum effects can be enormous. The recoil from such a weapon is equally enormous, and requires it to be mounted on a weapons platform. ... A weapons platform is generally any structure or system on which a weapon can be mounted. ...


A recoil system absorbs momentum, for example by the barrel moving backwards. Cannons and such weapons without a recoil system roll several meters backwards when fired. A small Civil War-era cannon on a carriage A cannon is any large tubular firearm designed to fire a heavy projectile over a considerable distance. ...


In a soft-recoil system, a gun's barrel is moved forward prior to shooting. As the barrel is forced backwards by the recoil force, the energy is reduced by friction, resulting in less of an overall "kick". One of the early guns to use this was the French 65mm mle.1906; however, this method did not receive much attention until the 1970s. To meet Wikipedias quality standards, this article or section may require cleanup. ... Friction is the force that opposes the relative motion or tendency of such motion of two surfaces in contact. ... The Canon de 65 M(montagne) modele 1906 (65mm mle. ... The 1970s decade refers to the years from 1970 to 1979, inclusive. ...

Recoilless designs allow larger projectiles to be shoulder-launched
Recoilless designs allow larger projectiles to be shoulder-launched

Recoilless rifles and rocket launchers exhaust gas to the rear, balancing the recoil. They are used as light anti-tank weapons. Image File history File links From http://www. ... Image File history File links From http://www. ... M67 recoilless rifle. ... M136 AT-4 rocket launcher A shoulder-launched missile weapon is a weapon that fires a rocket-propelled missile at a target, yet is small enough to be carried by one man, and fired whilst held on his shoulder. ... Anti-tank, or simply AT, refers to any method of combating military armored fighting vehicles, notably tanks. ...


See also


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