firing cycle
71Control of chromosome duplication — A key feature of the DNA replication mechanism in eukaryotes is that it is designed to replicate relatively large genomes rapidly and with high fidelity. Replication is initiated at multiple origins of replication on multiple chromosomes… …
72Cartridge (firearms) — From left: .50 BMG, .300 Win Mag, .308 Winchester, 7.62×39mm, 5.56×45mm NATO, .22LR. A cartridge, also called a round, packages the bullet, gunpowder and primer into a single metallic case precisely made to fit the firing chamber of a firearm …
73Coast Artillery fire control system — A conceptual diagram of the flow of fire control data in the Coast Artillery (in 1940). The set forward point of the target was generated by using the plotting board (1). This position was then corrected for factors affecting range and azimuth… …
74Gatling gun — The Gatling gun is considered by some to have been the first machine gun: although it did not automatically reload under its own power, it was capable of firing continuously. Each barrel fires a single shot as it reaches a certain point in the… …
75Sleep — Waking up redirects here. For other uses, see Waking Up (disambiguation). This article is about sleep in general; for specifically non human sleep see Sleep (non human); for other uses, see Sleep (disambiguation). Sleeping child Sleep is a… …
76M60 machine gun — Infobox Weapon name=Machine Gun, 7.62 mm, M60 caption=M60 machine gun origin=flagcountry|United States type= General purpose machine gun is ranged=yes service= 1957 present used by=See Operators wars= Vietnam War Cambodian Civil War Gulf War War… …
77Action potential — In physiology, an action potential is a short lasting event in which the electrical membrane potential of a cell rapidly rises and falls, following a consistent trajectory. Action potentials occur in several types of animal cells, called… …
78Suppressor — Several firearms with detachable suppressors, from top to bottom: An Uzi, An AR 15 variant, A Heckler Koch USP Tactical, A Beretta 92FS, and a SIG Mosquito …
79M16 rifle — Rifle, 5.56 mm, M16 From top to bottom: M16A1, M16A2, M4A1, M16A4 Type Assault rifle Place  …
80Trigger (firearms) — For other uses, see Trigger (disambiguation). Trigger mechanism in a bolt action rifle. A trigger is a mechanism that actuates the firing sequence of a firearm. Triggers almost universally consist of levers or buttons actuated by the index finger …
