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Tanganyika, Lake

(Encyclopedia)Tanganyika, Lake, second largest lake of Africa, c.12,700 sq mi (32,890 sq km), E central Africa on the borders of Tanzania, Congo (Kinshasa), Zambia, and Burundi. It is c.420 mi (680 km) long and up ...

Pennines

(Encyclopedia)Pennines pĕnˈīnz [key] or Pennine Chain, mountain range, sometimes called the “backbone of England,” extending c.160 mi (260 km) from the Cheviot Hills on the Scottish border to the Peak Distri...

hat

(Encyclopedia)hat, headdress developed from the simple close-fitting cap and hood of antiquity. The first hat, which was distinguished as such by having a brim, was the felt petasus of the Greeks, which tied under ...

automatic tuning control

(Encyclopedia)automatic tuning control (ATC), method or device to keep a radio or television receiver automatically tuned to a desired frequency or channel. Assuming that the receiver is at least approximately tune...

Nordhaus, William Dabney

(Encyclopedia)Nordhaus, William Dabney, 1941–, American economist, b. Albuquerque, N.Mex., Ph.D. Massachusetts Institute of Technology, 1967. A professor at Yale since 1967, he has focused on the economic effects...

note, in music

(Encyclopedia)note, in musical notation, symbol placed on or between the lines of a staff to indicate the pitch and the relative duration of the tone to be produced by voice or instrument. The largest note value in...

molecular modeling

(Encyclopedia)molecular modeling, the computer simulation, by various means, of chemical structures or processes. Special computer-graphics programs can display three-dimensional images of molecular structures and ...

Morgan, Edmund Sears

(Encyclopedia)Morgan, Edmund Sears, 1916–2013, U.S. historian, b. Minneapolis. After receiving his Ph.D. from Harvard in 1942, he taught at the Univ. of Chicago (1945–46) and at Brown (1946–55) before becomin...

Murray, James

(Encyclopedia)Murray, James, 1721?–94, British general, first civil governor of Canada, b. Scotland. He went to Canada as an army officer in 1757 and was prominent at the siege of Louisburg (1758) and in the cruc...

Arish, Al

(Encyclopedia)Arish, Al äl ärēshˈ [key], town (1986 pop. 67,337), NE Egypt, in the Sinai peninsula, on the Mediterranean Sea. It is a fishing port and a military and administrative center; since the 1980s it ha...