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Centralia

(Encyclopedia)Centralia sĕntrāˈlēə [key]. 1 City (2020 pop. 12,182), Clinton and Marion counties, S Il...

Langley, Samuel Pierpont

(Encyclopedia)Langley, Samuel Pierpont, 1834–1906, American scientist, b. Roxbury, Mass., received only a high school education but continued his studies in science in Boston libraries. He became, in 1866, profes...

compression

(Encyclopedia)compression, external stress applied to an object or substance, tending to cause a decrease in volume (see pressure). Gases can be compressed easily, solids and liquids to a very small degree if at al...

Morris, Robert, 1931–2018, American artist

(Encyclopedia)Morris, Robert (Robert Eugene Morris), 1931–2018, American artist, b. Kansas City, Mo., studied Kansas City Art Institute, California School of Fine Arts, Reed College. He settled in New York City i...

fog

(Encyclopedia)fog, aggregation of water droplets or ice crystals immediately above the surface of the earth (i.e., a cloud near the ground). A light or thin fog is usually called a mist. Fog may occur when the mois...

trade

(Encyclopedia)trade, traffic in goods. Conducted by gift, barter, or sale, trade is one of the most widespread of all social institutions. The theory of commerce as imposed by the national state has varied from...

shock absorber

(Encyclopedia)shock absorber, device for reducing the effect of a sudden shock by the dissipation of the shock's energy. On an automobile, springs and shock absorbers are mounted between the wheels and the frame. W...

Radek, Karl

(Encyclopedia)Radek, Karl kärl räˈdyĭk [key], 1885–1939?, international Communist leader and journalist, b. Lviv (then in Austrian Poland); his original name was Sobelsohn. Radek participated in the 1905 revo...

steering system

(Encyclopedia)steering system, in automobiles, steering wheel, gears, linkages, and other components used to control the direction of a vehicle's motion. Because of friction between the front tires and the road, es...

vertical takeoff and landing aircraft

(Encyclopedia)vertical takeoff and landing aircraft (VTOL), craft capable of rising and descending vertically from and to the ground, thus requiring no runway. While a balloon or an airship has obvious VTOL capabil...