head rise coefficient
41Tidal power — Tidal power, sometimes called tidal energy, is a form of hydropower that converts the energy of tides into electricity or other useful forms of power.Although not yet widely used, tidal power has potential for future electricity generation. Tides …
42Countercurrent chromatography — (CCC) or partition chromatography is a category of chromatography techniques;[1] laboratory techniques for the separation of mixtures, in this case liquid liquid mixtures. Contents 1 Chromatography 2 Techniques …
43Porsche 911 — Infobox Automobile name=Porsche 911 predecessor=Porsche 356 manufacturer=Porsche AG assembly=Leipzig, Germany classSports car layout=Rear engine, rear wheel drive / four wheel drive production=1964 ndash;present body style=2 door coupe 2 door… …
44Dual-sector model — This article is about the economic model. For the diagram representing atomic bonding, see Lewis structure. Sir W. Arthur Lewis Sir William Arthur Lewis, official Nobel Prize photo …
45History of post-Soviet Russia — With the dissolution of the Soviet Union in December 1991, the Russian Federation became an independent country. Russia was the largest of the fifteen republics that made up the Soviet Union, accounting for over 60% of the GDP and over half of… …
46PID controller — A block diagram of a PID controller A proportional–integral–derivative controller (PID controller) is a generic control loop feedback mechanism (controller) widely used in industrial control systems – a PID is the most commonly used feedback… …
47China — This article is about the People s Republic of China. For the state commonly known as Taiwan, see the Republic of China. For other uses, see China (disambiguation). PRC redirects here. For other uses, see PRC (disambiguation). People …
48Norway — For other uses, see Norway (disambiguation). Kingdom of Norway Kongeriket Norge (Bokmål) Kongeriket Noreg (Nynorsk) …
49Transformer — This article is about the electrical device. For the toy line franchise, see Transformers. For other uses, see Transformer (disambiguation). Pole mounted distribution transformer with center tapped secondary winding. This type of transformer is… …
50Household income in the United States — For information on the income of individuals, see Personal income in the United States. Median household income in the United States, by county, in 2008 Income in the United States …
