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In genetic engineering, a gene gun or biolistic particle delivery system is a device used to deliver exogenous DNA , RNA, or protein to cells. By coating particles of a heavy metal with a gene of interest and firing these micro-projectiles into cells using mechanical force, an integration of desired genetic information can be introduced into ...
Blast from a US Navy fuel–air explosive used against a decommissioned ship, USS McNulty, 1972 A thermobaric weapon, also called an aerosol bomb, or a vacuum bomb, [1] is a type of explosive munition that works by dispersing an aerosol cloud of gas, liquid or powdered explosive.
A general-purpose machine gun is usually a lightweight medium machine gun that can either be used with a bipod and drum in the light machine gun role or a tripod and belt feed in the medium machine gun role. DShK in the heavy role. Machine guns usually have simple iron sights, though the use of optics is becoming more common.
A particle-beam weapon uses a high-energy beam of atomic or subatomic particles to damage the target by disrupting its atomic and/or molecular structure. A particle-beam weapon is a type of space-based directed-energy weapon, which directs focused energy toward a target using atomic scale particles.
The back blast may also reveal the user's position to the enemy. The problem of back blast was solved with the AT4-CS (Confined Space) version, specially designed for urban warfare. This version uses a saltwater countermass in the rear of the launcher to absorb the back blast; the resulting spray captures and dramatically slows down the ...
Researchers in Arizona say they have discovered the oldest gun in the U.S., a cannon used during the first European expedition across the Southwest. Blast from the past: Researchers discover ...
The M240 machine gun, officially the Machine Gun, 7.62 mm, M240, is the U.S. military designation for the FN MAG, [6] a family of belt-fed, gas-operated medium machine guns that chamber the 7.62×51mm NATO cartridge. [1] The M240 has been used by the United States Armed Forces since the late 1970s.
Rifle and machine-gun bullets were used against early military aircraft during World War I. Artillery was used when aircraft flew above the range of rifle and machine-gun cartridges. Since the probability of actually striking the aircraft was small, artillery shells were designed to explode at the approximate altitude of the aircraft to throw a ...