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Rogers, Fred McFeely

(Encyclopedia)Rogers, Fred McFeely, 1928–2003, American children's television personality, b. Latrobe, Pa. Rogers began working in television immediately after he graduated (1951) from Rollins College and in 1953...

Roosebeke, battle of

(Encyclopedia)Roosebeke, battle of rōˈzəbāˌkə [key], 1382, in the modern-day village of Westrozebeke, Staden commune, West Flanders prov., W Belgium. The French under Olivier de Clisson defeated Flemish weave...

Servile Wars

(Encyclopedia)Servile Wars, name given in Roman history to three slave uprisings. The agricultural slaves were exploited by their owners, who had extreme powers and were never averse to using them. The first of the...

Sternberg, George Miller

(Encyclopedia)Sternberg, George Miller stûrnˈbərg [key], 1838–1915, American bacteriologist and surgeon-general of the U.S. army, b. Hartwick, N.Y., M.D. Columbia, 1860. He was assistant surgeon in the U.S. ar...

Rivera, Mariano

(Encyclopedia)Rivera, Mariano, 1969–, Panamanian baseball player. A right-handed relief pitcher nicknamed the Sandman, he joined the New York Yankees organization in 1990 and spent his entire career with them. He...

psittacosis

(Encyclopedia)psittacosis sĭtəkōˈsĭs [key] or parrot fever, infectious disease caused by the species of Chlamydia psittaci and transmitted to people by birds, particularly parrots, parakeets, and lovebirds. In...

elephantiasis

(Encyclopedia)elephantiasis ĕlˈəfăntīˈəsĭs [key], abnormal enlargement of any part of the body due to obstruction of the lymphatic channels in the area (see lymphatic system), usually affecting the arms, le...

computer program

(Encyclopedia)computer program, a series of instructions that a computer can interpret and execute; programs are also called software to distinguish them from hardware, the physical equipment used in data processin...

hysteresis

(Encyclopedia)hysteresis hĭsˌtərēˈsĭs [key], phenomenon in which the response of a physical system to an external influence depends not only on the present magnitude of that influence but also on the previous...

Aceh

(Encyclopedia)Aceh äˈchā [key], special region (1980 pop. 2,875,634), 21,387 sq mi (55,392 sq km), N Sumatra, Indonesia, formerly known as Atjeh or Achin. The capital and largest city is Banda Aceh. The northern...