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Kahn, Louis Isadore

(Encyclopedia)Kahn, Louis Isadore , kän [key], 1901–74, American architect, b. Estonia. He and his family moved to Philadelphia in 1905, and he later studied at the Univ. of Pennsylvania. From the 1920s through ...

strength of materials

(Encyclopedia)strength of materials, measurement in engineering of the capacity of metal, wood, concrete, and other materials to withstand stress and strain. Stress is the internal force exerted by one part of an e...

Pei, I. M.

(Encyclopedia)Pei, I. M. (Ieoh Ming Pei) pā [key], 1917–2019, Chinese-American architect, b. Guangzhou, China. Pei immigrated to the United States in 1935 and studied at the Univ. of Pennsylvania, the Massachuse...

calcium

(Encyclopedia)calcium kălˈsēəm [key] [Lat.,=lime], metallic chemical element; symbol Ca; at. no. 20; at. wt. 40.078; m.p. about 839℃; b.p. 1,484℃; sp. gr. 1.55 at 20℃; valence +2. Calcium is a malleable, ...

Helena

(Encyclopedia)Helena. 1 City (2020 pop. 20,633), Jefferson and Shelby cos., central Ala.; inc. 1877. White settlers began to occupy the area after the War of ...

Lima, city, Peru

(Encyclopedia)Lima lēˈmə, Span. lēˈmä [key], city (1990 metropolitan area est. pop. 6,400,000), W Peru, capital and largest city of Peru. Its port is Callao. The Lima urban area is Peru's economic center and ...

Montaigne, Michel Eyquem, seigneur de

(Encyclopedia)Montaigne, Michel Eyquem, seigneur de mŏntānˈ, Fr. mēshĕlˈ ākĕmˈ sānyörˈ də môNtĕnˈyə [key], 1533–92, French essayist. Montaigne was one of the greatest masters of the essay as a li...

Corpus Juris Civilis

(Encyclopedia)Corpus Juris Civilis kôrˈpəs jo͝oˈrĭs sĭvīˈlĭs [key], most comprehensive code of Roman law and the basic document of all modern civil law. Compiled by order of Byzantine Emperor Justinian I,...

cluster munitions

(Encyclopedia)cluster munitions or cluster bombs, air-dropped or ground-launched weapons that open in mid-air and scatter dozens, hundreds, or thousands of smaller submunitions (or bomblets) over a wide area. Such ...

stadium

(Encyclopedia)stadium stāˈdēəm [key], racecourse in Greek cities where footraces and other athletic contests took place. The name is the Latin form of the Greek word for a standard of length and originally refe...