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Kahn, Robert Elliot

(Encyclopedia)Kahn, Robert Elliot, 1938–, American computer scientist, b. Brooklyn, N.Y., B.E.E. City College of New York, 1960, Ph.D. Princeton, 1964. With Vinton Cerf, he is responsible for the design and imple...

Smith, David

(Encyclopedia)Smith, David, 1906–65, American sculptor, b. Decatur, Ind. He arrived in New York City in 1926 and studied painting at the Art Students League. In the 1930s he began experimenting with sculpture and...

age grade and age set

(Encyclopedia)age grade and age set, differentiation of social role based on age, commonly found in small-scale societies of North America and East Africa. Age sets are a type of sodality (nonresidential groups tha...

Butenandt, Adolf Friedrich Johann

(Encyclopedia)Butenandt, Adolf Friedrich Johann, 1903–95, German biochemist, Ph.D. Univ. of Göttingen, 1927. Butenandt held academic posts at the Univ. of Göttingen (1927–33) and the Institute of Technology a...

Zamboanga

(Encyclopedia)Zamboanga sāmˌbōängˈgä [key], city (1990 pop. 442,345), Zamboanga del Sur prov., SW Mindanao, the Philippines, at the tip of the Zamboanga peninsula, on Basilan Strait. One of the chief cities o...

Billy the Kid

(Encyclopedia)Billy the Kid, 1859–81, American outlaw, b. New York City. His real name was probably Henry McCarty; he was known as William H. Bonney. His family moved to Kansas and then to New Mexico when he was ...

Birkeland, Kristian

(Encyclopedia)Birkeland, Kristian or Olaf Christian krĭsˈtyän bērˈkəlän, ōˈläv [key], 1867–1917, Norwegian physicist. From 1898 Birkeland was a professor at the Univ. of Christiania (now Oslo). Noted fo...

mode, in music

(Encyclopedia)mode, in music. 1 A grouping or arrangement of notes in a scale with respect to a most important note (in the pretonal modes of Western music, this note is called the final or finalis), and the patter...

conscription

(Encyclopedia)conscription, compulsory enrollment of personnel for service in the armed forces. Obligatory service in the armed forces has existed since ancient times in many cultures, including the samurai in Japa...

expansion

(Encyclopedia)expansion, in physics, increase in volume resulting from an increase in temperature. Contraction is the reverse process. When heat is applied to a body, the rate of vibration and the distances between...