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Fisher, Irving

(Encyclopedia) Fisher, Irving, 1867–1947, American economist, b. Saugerties, N.Y., Ph.D. Yale, 1891. He began teaching at Yale in 1890 and was active there until 1935. His earliest work was in…

amenorrhea

(Encyclopedia) amenorrheaamenorrheaāmĕnˌərēˈa, əmĕnˌ– [key], cessation of menstruation. Primary amenorrhea is a delay in or a failure to start menstruation; secondary amenorrhea is an unexpected stop…

Burnham, Forbes

(Encyclopedia) Burnham, Forbes, 1923–85, prime minister (1964–80) and president (1980–85) of Guyana, formerly British Guiana. His full name was Linden Forbes Sampson Burnham. Of African descent, he…

winch

(Encyclopedia) winch, mechanical device for hauling or lifting consisting essentially of a movable drum around which a cable is wound so that rotation of the drum produces a drawing force at the end…

Beeckman, Isaac

(Encyclopedia) Beeckman, IsaacBeeckman, Isaacbākˈmən [key], 1588–1637, Dutch physicist. An early proponent of mathematical reasoning and experimental verification in natural philosophy, he…

Sankara, Thomas Isidore Noël

(Encyclopedia) Sankara, Thomas 1948–87, president (1983–87) of Burkina Faso. Thomas Sankara, sometimes referred to as the African Che Guevara, was an…

microcredit

(Encyclopedia) microcredit, the extension to individuals of small loans to be used for income-generating activities that will improve the borrowers' living standards. The borrowers, most of whom…

chain reaction

(Encyclopedia) CE5 Chain reaction: A neutron (n) strikes the uranium nucleus (U-235), causing it to split into fission products A and B and release two neutrons. These neutrons can in turn cause…

Sen, Amartya Kumar

(Encyclopedia) Sen, Amartya Kumar, 1933–, Indian economist, b. Bengal, Ph.D. Cambridge, 1959. He has taught at Jadavpur Univ.,…

Bakiyev, Kurmanbek Saliyevich

(Encyclopedia) Bakiyev, Kurmanbek SaliyevichBakiyev, Kurmanbek Saliyevichk&oomacr;rmänbĕkˈ bäkēˈyĕv [key], 1949–, Kyrgyz political leader, president of Kyrgyzstan (2005–2010), b. Masadan. A…