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Playfair, John

(Encyclopedia)Playfair, John, 1748–1819, Scottish mathematician, physicist, and geologist. He was educated at St. Andrews and Edinburgh and taught first mathematics and then physics and astronomy at the latter un...

Dollond, John

(Encyclopedia)Dollond, John dŏlˈənd [key], 1706–61, English optician and inventor. A silk weaver, he taught himself languages, mathematics, and science, becoming a noted scholar as well as a scientist. He inve...

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...

Torricelli, Evangelista

(Encyclopedia)Torricelli, Evangelista āvänjālēˈstä tōr-rēchĕlˈlē [key], 1608–47, Italian physicist and mathematician. He was Galileo's secretary (1641–42) and his successor as professor of philosophy...

Haavelmo, Trygve

(Encyclopedia)Haavelmo, Trygve trügˈvə hävelmō [key], 1911–99, Norwegian economist. In the 1940s, he was a pioneer in the field of econometrics, using mathematics and statistics in the formation of economic ...

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...

Snell, Willebrord

(Encyclopedia)Snell or Snellius, Willebrord vĭlˈəbrôrt snĕl, snĕlēəs [key], 1591–1626, Dutch mathematician. He is generally credited with the discovery (1621) of the law of the refraction of light. In 161...

Göttingen

(Encyclopedia)Göttingen götˈĭng-ən [key], city, Lower Saxony, central Germany, on the Leine River. It is ...

Laurentian University

(Encyclopedia)Laurentian University, main campus at Sudbury, Ont., Canada; bilingual, coeducational; founded 1960. Among its faculties are those in astronomy, commerce, computer science, education, engineering, law...

Kronecker, Leopold

(Encyclopedia)Kronecker, Leopold lāˈōpôlt krōˈnĕkˌər [key], 1823–91, German mathematician. After making a fortune in business he devoted his attention to mathematics and became professor at the Univ. of ...