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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
apparent ground-water velocity — See specific discharge … Lexicon of Cave and Karst Terminology
field velocity of ground water — Actual interstitial velocity of ground water [16] … Lexicon of Cave and Karst Terminology
velocity, average interstitial — The average rate of ground water flow in interstices expressed as the product of hydraulic conductivity and hydraulic gradient divided by the effective porosity. Synonymous with average linear ground water velocity or effective velocity … Lexicon of Cave and Karst Terminology
Water pollution — Raw sewage and industrial waste flows across international borders New River passes from Mexicali to Calexico, California. Water pollution is the contamination of water bodies (e.g. lakes, rivers, oceans and groundwater). Water p … Wikipedia
Water turbine — A water turbine is a rotary engine that takes energy from moving water.Water turbines were developed in the nineteenth century and were widely used for industrial power prior to electrical grids. Now they are mostly used for electric power… … Wikipedia
Water rocket — A water rocket is a type of model rocket using water as its reaction mass. The pressure vessel mdash;the engine of the rocket mdash;is usually a used plastic soft drink bottle. The water is forced out by a pressurized gas, typically compressed… … Wikipedia
true velocity — Ground water flow velocity in porous interstice or cavernous opening [16] … Lexicon of Cave and Karst Terminology
Nuclear salt-water rocket — A nuclear salt water rocket (or NSWR) is a proposed type of nuclear thermal rocket designed by Robert Zubrin that would be fueled by water bearing dissolved salts of Plutonium or U235. These would be stored in tanks that would prevent a critical… … Wikipedia
Dallas Water Utilities — (DWU) is the water and wastewater service operated by the City of Dallas, Texas, in the United States. DWU is a non profit City of Dallas department that provides services to the city and 31 nearby communities, employs approximately 1450 people,… … Wikipedia
Personnel Armor System for Ground Troops — U.S. soldiers wearing the PASGT helmet Personnel Armor System for Ground Troops, sometimes abbreviated to PASGT, was a combat helmet and ballistic vest used by the American military from the mid 1980s until 2005, when the system was succeeded by… … Wikipedia
