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escape velocity

(Encyclopedia)escape velocity, the velocity a body must be given in order to escape the gravitational hold of some other larger body, e.g., the earth, moon, or sun. A body given less than the escape velocity will f...

Bruna, Dick

(Encyclopedia)Bruna, Dick (Hendrick Magdalenus Bruna), 1927–2017, Dutch children's book author and illustrator, b. Utrecht. The author of more than 120 books, Bruna is best known for his stories about a white rab...

suprematism

(Encyclopedia)suprematism, Russian art movement founded (1913) by Casimir Malevich in Moscow, parallel to constructivism. Malevich drew Aleksandr Rodchenko and El Lissitzky to his revolutionary, nonobjective art. I...

Willis Tower

(Encyclopedia)Willis Tower, formerly the Sears Tower, Chicago, the second tallest building in the United States. Until the completion of the 1,483-ft (452-m) Petronas Towers (1998) in Kuala Lumpur, Malaysia, it was...

Saint Helier

(Encyclopedia)Saint Helier sānt hĕlˈyər, Fr. săNtālyāˈ [key], town (1991 pop. 24,941), capital of Jersey, Channel Islands, Great Britain, on St. Aubin's Bay. The administrative and cultural center of Jersey...

Stern, Robert A. M.

(Encyclopedia)Stern, Robert A. M. (Robert Arthur Morton Stern), 1939–, American architect, b. New York City. He studied architecture at Yale Univ., became a practicing architect in the mid-1960s, and a professor ...

ring, mathematical system

(Encyclopedia)ring, in mathematics, system consisting of a set R of elements and two binary operations, such that addition makes R a commutative group and multiplication is associative and distributes over addition...

Communist party, in China

(Encyclopedia)Communist party, in China, ruling party of the world's most populous nation since 1949 and most important Communist party in the world since the disintegration of the USSR in 1991. After the People'...

Doric order

(Encyclopedia)Doric order, earliest of the orders of architecture developed by the Greeks and the one that they employed for most buildings. It is generally believed that the column and its capital derive from an e...

Eisenstaedt, Alfred

(Encyclopedia)Eisenstaedt, Alfred, 1898–1995, American photographer, b. Dirschau, Germany (now Tczew, Poland). Widely considered the father of photojournalism, he began creating photo essays in Berlin during the ...