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Mach number

(Encyclopedia)Mach number mäk [key] [for E. Mach], ratio between the speed of an object and the speed of sound in the medium in which the object is traveling. An airplane that has the velocity of Mach 3.0 is trave...

Marini, Marino

(Encyclopedia)Marini, Marino märēˈnō märēˈnē [key], 1901–66, Italian sculptor. Marini is best known for his many vigorous sculptures of horses and horsemen (e.g., Horse and Rider, 1949–50), although he ...

Peabody, George Foster

(Encyclopedia)Peabody, George Foster pēˈbädē [key], 1852–1938, American banker and philanthropist, b. Columbus, Ga. Successful early in life as a banker and organizer of railroads and utility companies, he re...

Toomer, Jean

(Encyclopedia)Toomer, Jean, 1894–1967, American writer, b. Washington, D.C., as Nathan Eugene Toomer. A major figure of the Harlem Renaissance, he is known mainly for Cane (1923, rev. ed. 1988, 2011), a collectio...

Rodbertus, Karl Johann

(Encyclopedia)Rodbertus, Karl Johann kärl yōˈhän rôdbĕrˈto͝os [key], 1805–75, German economist and conservative socialist. He held several public offices but after 1849 devoted himself to writing on econo...

Rosa, João Guimarães

(Encyclopedia)Rosa, João Guimarães rŏˈzä [key], 1908–67, Brazilian novelist. In The Devil to Pay in the Backlands (1956, tr. 1963), Rosa combines naturalism with psychological analysis in his examination of ...

Cohen, Hermann

(Encyclopedia)Cohen, Hermann kōˈən [key], 1842–1918, German philosopher. He was a founder of the Neo-Kantian Marburg school and was known for his commentaries on Kant. His own works include Logik der reinen Er...

Dam, Henrik

(Encyclopedia)Dam, Henrik hănˈrēk däm [key], 1895–1976, Danish biochemist. He identified vitamin K in 1934 and later investigated the role of vitamin E in nutrition. The 1943 Nobel Prize in Physiology or Medi...

Fish, Stuyvesant

(Encyclopedia)Fish, Stuyvesant stīˈvəsənt [key], 1851–1923, American railroad executive, b. New York City; son of Hamilton Fish (1808–93). He became (1877) a director of the Illinois Central RR, and as its ...

Greenaway, Kate

(Encyclopedia)Greenaway, Kate, 1846–1901, English illustrator and watercolorist. She is famous for her fanciful, humorous, delicately colored drawings of child life. She influenced children's clothing and the ill...