Effective height — In telecommunication, the term effective height can refer to the height of the center of radiation of an antenna above the effective ground level. Or in low frequency applications involving loaded or nonloaded vertical antennas, the moment of the … Wikipedia
ground — ground1 [ground] n. [ME grund < OE, ground, bottom, akin to Ger grund, ON grunnr: for IE base see GRIND] 1. a) Obs. the lowest part, base, or bottom of anything b) the bottom of a body of water 2. the surface of the earth, specif. the solid… … English World dictionary
Ground Control II: Operation Exodus — Developer(s) Massive Entertainment Publisher(s) … Wikipedia
Ground fighting — (in martial arts sometimes referred to as ground work or ground game ) is hand to hand combat which takes place while the combatants are on the ground, generally involving a degree of grappling. The term is commonly used in martial arts and… … Wikipedia
Ground granulated blast furnace slag — (GGBS or GGBFS) is obtained by quenching molten iron slag (a by product of iron and steel making) from a blast furnace in water or steam, to produce a glassy, granular product that is then dried and ground into a fine powder.ApplicationsGGBS is… … Wikipedia
Ground-coupled heat exchanger — Earth cooling tubes or earth warming tubes (also known as ground coupled heat exchangers) utilize the earth s near constant subterranean temperature to warm or cool air for residential, agricultural or industrial uses. They are often a viable and … Wikipedia
Ground (electricity) — In electrical engineering, ground or earth may be the reference point in an electrical circuit from which other voltages are measured, or a common return path for electric current, or a direct physical connection to the Earth. A typical earthing… … Wikipedia
Effective stress — Karl von Terzaghi first proposed the relationship for effective stress in 1936. [http://fbe.uwe.ac.uk/public/geocal/SoilMech/stresses/stresses.htm] For him, the term ‘effective’ meant the calculated stress that was effective in moving soil, or… … Wikipedia
Ground effect in cars — For another similarly named effect relating to aircraft, see Ground effect in aircraft. Ground effect is term applied to a series of aerodynamic effects used in car design, which has been exploited to create downforce, particularly in racing cars … Wikipedia
ground effect — i. The change in the aerodynamic reaction on an aircraft caused by the proximity of the ground. An aircraft, helicopter, or any other flying machine flying very near to the ground experiences an increase in lift. This additional lift or… … Aviation dictionary
ground-water travel time — 1. The time required for ground water to travel between two locations [22]. 2. The time required for a unit volume of ground water to travel between two locations. The travel time is the length of the flow path divided by the velocity,… … Lexicon of Cave and Karst Terminology
