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Pensacola

(Encyclopedia)Pensacola pĕnsəkōˈlə [key], city (1990 pop. 58,165), seat of Escambia co., extreme NW Fla., on Pensacola Bay; inc. 1822. It is a port of entry with a natural harbor and shipping and fishing indus...

wind tunnel

(Encyclopedia)wind tunnel, apparatus for studying the interaction between a solid body and an airstream. A wind tunnel simulates the conditions of an aircraft in flight by causing a high-speed stream of air to flow...

curium

(Encyclopedia)curium kyo͝orˈēəm [key], artificially produced radioactive chemical element; symbol Cm; at. no. 96; mass no. of most stable isotope 247; m.p. about 1,340℃; b.p. 3,110℃; sp. gr. 13.5 (calculate...

hygrometer

(Encyclopedia)hygrometer hīgrŏmˈətər [key], instrument used to measure the moisture content of a gas, as in determining the relative humidity of air. The temperature at which dew or frost forms is a measure of...

carbon monoxide

(Encyclopedia)carbon monoxide, chemical compound, CO, a colorless, odorless, tasteless, extremely poisonous gas that is less dense than air under ordinary conditions. It is very slightly soluble in water and burns ...

dark matter

(Encyclopedia)dark matter, material that is believed to make up nearly 27% of the mass of the universe but is not readily visible because it neither emits nor reflects electromagnetic radiation, such as light or ra...

Millington

(Encyclopedia)Millington, city (1990 pop. 17,866), Shelby co., SW Tenn., a suburb of Memphis, in a livestock and cotton region; inc. 1903. Memphis Naval Air Station is a major source of employment. ...

Maurer, Alfred Henry

(Encyclopedia)Maurer, Alfred Henry môrˈər [key], 1868–1932, American painter, b. New York City. He was apprenticed as a lithographer, taught himself painting, and went to Europe in 1897, studying briefly at th...

Tanaka, Koichi

(Encyclopedia)Tanaka, Koichi, 1959–, Japanese engineer, B.S. Tohoku Univ., 1983. He has been a researcher at Shimadzu Corporation in Kyoto, Japan, since 1983. Tanaka shared the 2002 Nobel Prize in Chemistry with ...

pressure

(Encyclopedia)pressure, in mechanics, ratio of the force acting on a surface to the area of the surface; it is thus distinct from the total force acting on a surface. A force can be applied to and sustained by a si...