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Fire-and-forget[ 1][ 2] is a type of missile guidance which does not require further external intervention after launch such as illumination of the target or wire guidance, and can hit its target without the launcher being in line-of-sight of the target. This is an important property for a guided weapon to have, since a person or vehicle that ...
The game's main playable character, Boyfriend. Friday Night Funkin' is a rhythm game in which the player controls a character called Boyfriend, who must defeat a series of opponents in order to continue dating his significant other, Girlfriend. The player must pass multiple levels, referred to as "Weeks" in-game, containing three songs each.
FN P90. The FN P90 is a personal defense weapon (PDW) chambered for the 5.7×28mm cartridge, also classified as a submachine gun, designed and manufactured by FN Herstal in Belgium. [ 9][ 10][ 11] Created in response to NATO requests for a replacement for 9×19mm Parabellum firearms, the P90 was designed as a compact but powerful firearm for ...
Firefighting foam is a foam used for fire suppression. Its role is to cool the fire and to coat the fuel, preventing its contact with oxygen, thus achieving suppression of the combustion. Firefighting foam was invented by the Russian engineer and chemist Aleksandr Loran in 1902. [ 1]
External ballistics. This schlieren image of a bullet travelling in free-flight demonstrates the air-pressure dynamics surrounding the bullet. External ballistics or exterior ballistics is the part of ballistics that deals with the behavior of a projectile in flight. The projectile may be powered or un-powered, guided or unguided, spin or fin ...
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Aerial firefighting, also known as waterbombing, is the use of aircraft and other aerial resources to combat wildfires. The types of aircraft used include fixed-wing aircraft and helicopters. Smokejumpers and rappellers are also classified as aerial firefighters, delivered to the fire by parachute from a variety of fixed-wing aircraft, or ...
Firefighter from Warsaw wearing equipment for breathing in smoke ca. 1870. The history of organized firefighting began in ancient Rome while under the rule of the first Roman Emperor Augustus. [ 1] Prior to that, Ctesibius, a Greek citizen of Alexandria, developed the first fire pump in the third century BC, which was later improved upon in a ...