pressurized reservoir
41Flamethrower — A flamethrower is a mechanical device designed to project a long controllable stream of fire.Some flamethrowers project a stream of ignited flammable liquid; some project a long gas flame. Most military flamethrowers use liquids, but commercial… …
42Fire hydrant — in Charlottesville, Virginia, USA A fire hydrant (also known colloquially as a fire plug in the United States or as a johnny pump in New York City, because the firemen of the late 19th century were called Johnnies[ …
43building construction — Techniques and industry involved in the assembly and erection of structures. Early humans built primarily for shelter, using simple methods. Building materials came from the land, and fabrication was dictated by the limits of the materials and… …
44Abiogenic petroleum origin — is a largely abandoned hypothesis that was proposed as an alternative to theory of biological petroleum origin. It was relatively popular in the past, but it went largely forgotten at the end of the 20th century after it failed to predict the… …
45Aeroponics — is the process of growing plants in an air or mist environment without the use of soil or an aggregate medium. Aeroponic culture differs from both hydroponics and in vitro (Plant tissue culture) growing. Unlike hydroponics, which uses water as a… …
46Navette Spatiale Américaine — Premier décollage de la navette spatiale Columbia le 12 avril 1981 (NASA) La navette spatiale américaine (space shuttle en anglais) est une navette spatiale conçue et utilisée par les États Unis, dont le vol inaugural eut lieu le …
47Navette spatiale americaine — Navette spatiale américaine Premier décollage de la navette spatiale Columbia le 12 avril 1981 (NASA) La navette spatiale américaine (space shuttle en anglais) est une navette spatiale conçue et utilisée par les États Unis, dont le vol inaugural… …
48Space Shuttle — Navette spatiale américaine Premier décollage de la navette spatiale Columbia le 12 avril 1981 (NASA) La navette spatiale américaine (space shuttle en anglais) est une navette spatiale conçue et utilisée par les États Unis, dont le vol inaugural… …
49Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… …
50Cannon — A cannon is a type of artillery, usually large and tubular, that uses gunpowder or other explosive based propellants to launch a projectile over a distance. Cannon vary in caliber, range, mobility, rate of fire, angle of fire, and firepower;… …
