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Barkla, Charles Glover

(Encyclopedia)Barkla, Charles Glover glŭˈvər bärˈklə [key], 1877–1944, English physicist. He was professor of natural philosophy at Edinburgh from 1913. For his discovery of the characteristic X rays of ele...

Hywel Dda

(Encyclopedia)Hywel Dda hŭˈwəl ᵺä [key], or Howel the Good, d. 950?, king of Wales. He brought much of Wales under a single rule and is credited with the codification of Welsh laws. The earliest extant texts ...

Perkins, Frances

(Encyclopedia)Perkins, Frances, 1882–1965, U.S. Secretary of Labor (1933–45), b. Boston. She worked at Hull House, was executive secretary of the New York Consumers' League (1910–12) and of the New York Commi...

Varona y Pera, Enrique José

(Encyclopedia)Varona y Pera, Enrique José ānrēˈkā hōsāˈ värōˈnä ē pāˈrä [key], 1849–1933, Cuban philosopher and vice president of Cuba (1913–17). Varona was a professor at the Univ. of Havana an...

Munn v. Illinois

(Encyclopedia)Munn v. Illinois, case decided by the U.S. Supreme Court in 1876. Munn, a partner in a Chicago warehouse firm, had been found guilty by an Illinois court of violating the state laws providing for the ...

dialectical materialism

(Encyclopedia)dialectical materialism, official philosophy of Communism, based on the writings of Karl Marx and Friedrich Engels, as elaborated by G. V. Plekhanov, V. I. Lenin, and Joseph Stalin. In theory dialecti...

alienation

(Encyclopedia)alienation, in property laws: see tenure. ...

Megan's law

(Encyclopedia)Megan's law, in the United States, a state or federal statute that requires the notification of public organizations and private citizens when a convicted sex offender has been released from prison an...

Intolerable Acts

(Encyclopedia)Intolerable Acts, name given by American patriots to five laws (including the Quebec Act) adopted by Parliament in 1774, which limited the political and geographical freedom of the colonists. Four of ...

planetary science

(Encyclopedia)planetary science or planetology, study of planets and planetary systems as a whole. Planetary science applies the theories and methods of traditional disciplines such as astronomy, geology, physics, ...