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Euler, Leonhard

(Encyclopedia)Euler, Leonhard lāˈônhärt oiˈlər [key], 1707–83, Swiss mathematician. Born and educated at Basel, where he knew the Bernoullis, he went to St. Petersburg (1727) at the invitation of Catherine ...

Panofsky, Erwin

(Encyclopedia)Panofsky, Erwin pănŏfˈskē [key], 1892–1968, American art historian, b. Germany, Ph.D. Univ. of Freiburg, 1914. After teaching (1921–33) at the Univ. of Hamburg and serving as professor of fine...

Pareto, Vilfredo

(Encyclopedia)Pareto, Vilfredo vēlfrĕˈdō pärĕˈtō [key], 1848–1923, Italian economist and sociologist, b. Paris, of an exiled noble family that returned to Italy in 1858. He studied mathematics and enginee...

Eco, Umberto

(Encyclopedia)Eco, Umberto əmbĕrˈtō ĕcō [key], 1932–2016, Italian novelist, essayist, and semiotics scholar. His first novel, the best-selling Il nome della rosa (1980; tr. The Name of the Rose, 1983, film ...

Hansen, Lars Peter

(Encyclopedia)Hansen, Lars Peter, 1952–, U.S. economist, b. Champaign, Ill., Ph.D. Univ. of Minnesota, 1978. After teaching at Carnegie-Mellon Univ., Pittsburgh (1978–81), he joined the faculty of the Univ. of ...

Bjerknes, Vilhelm Frimann Koren

(Encyclopedia)Bjerknes, Vilhelm Frimann Koren vĭlˈhĕlm frēˈmän kôˈrən byĕrkˈnĕs [key], 1862–1951, Norwegian physicist and pioneer in modern meteorology. He worked on applying hydrodynamic and thermody...

universe

(Encyclopedia)universe, totality of matter and energy in existence. The study of the origin of the universe, or cosmos, is known as cosmogony, and that of its structure and evolution, cosmology. The age of the univ...

periodic law

(Encyclopedia)periodic law, statement of a periodic recurrence of chemical and physical properties of the elements when the elements are arranged in order of increasing atomic number. Such an arrangement in the for...

Martineau, James

(Encyclopedia)Martineau, James, 1805–1900, English philosopher and Unitarian clergyman; brother of Harriet Martineau. He strongly upheld the theist position against the negations of physical science. A renowned t...

Cournot, Antoine Augustin

(Encyclopedia)Cournot, Antoine Augustin äNtwänˈ ōgüstăNˈ ko͞ornōˈ [key], 1801–77, French mathematician and economist. He developed mathematical theories of chance and probability and was one of the firs...