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Fort Sill

(Encyclopedia)Fort Sill, U.S. military reservation, Comanche co., SW Okla., 4 mi (6.4 km) N of Lawton; est. 1869 by Gen. Philip Sheridan. A 95,000-acre (38,445-hectare) field artillery and missile base, it is the h...

Paeonius

(Encyclopedia)Paeonius pēōˈnēəs [key], Gr. Paionios, fl. 5th cent. b.c., Greek sculptor from Mende in Thrace. An inscription on the triangular base of the statue of Nike (Victory) at Olympia states that Paeoni...

Lewis, Wyndham

(Encyclopedia)Lewis, Wyndham (Percy Wyndham Lewis) wĭnˈdəm [key], 1886–1957, English author and painter, born on a ship on the Bay of Fundy. With Ezra Pound, he was cofounder and editor of Blast (1914–15), a...

torsion balance

(Encyclopedia)torsion balance, instrument used to measure small forces. It is based on the principle that a wire or thread resists twisting with a force that is proportional to the stress. The torsion balance consi...

grease

(Encyclopedia)grease, mixture of lubricant and thickener. It is used to reduce friction between surfaces from which oils would leak away or cause damage by dripping, or where lubrication must be assured for extende...

cyclone

(Encyclopedia)cyclone, atmospheric pressure distribution in which there is a low central pressure relative to the surrounding pressure. The resulting pressure gradient, combined with the Coriolis effect, causes air...

smoke

(Encyclopedia)smoke, visible gaseous product of incomplete combustion. Smoke varies with its source, but it usually comprises hot gas and suspended particles of carbon and tarry substances, or soot. To reduce the a...

shuffleboard

(Encyclopedia)shuffleboard, sport in which players use cue sticks to push disks onto a scoring diagram at either end of a concrete or terrazzo court. The court is 52 ft (15.85 m) long and 6 ft (1.83 m) wide. The ba...

basic oxygen process

(Encyclopedia)basic oxygen process, method of producing steel from a charge consisting mostly of pig iron. The charge is placed in a furnace similar to the one used in the Bessemer process of steelmaking except tha...

buoyancy

(Encyclopedia)buoyancy boiˈənsē, bo͞oˈyən– [key], upward force exerted by a fluid on any body immersed in it. Buoyant force can be explained in terms of Archimedes' principle. ...