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Heaviside, Oliver

(Encyclopedia)Heaviside, Oliver hĕvˈēsīdˌ [key], 1850–1925, English physicist. He did valuable work in telephony and in the theory of electrical conduction in cables and other areas of electric theory. He su...

Kennelly, Arthur Edwin

(Encyclopedia)Kennelly, Arthur Edwin kĕnˈəlē [key], 1861–1939, American electrical engineer, b. Bombay (now Mumbai), India, educated at University College School, London. He was Edison's chief electrical assi...

ionosphere

(Encyclopedia)ionosphere īŏnˈəsfēr [key], series of concentric ionized layers forming part of the upper atmosphere of the earth from around 30 to 50 mi (50 to 80 km) to 250 to 370 mi (400 to 600 km) where it m...

Cromwell, Oliver

(Encyclopedia)Cromwell, Oliver krŏmˈwĕl, krŭmˈ–, –wəl [key], 1599–1658, lord protector of England. Opinions of Cromwell have always varied widely. His military skill and force of character are univers...

Evans, Oliver

(Encyclopedia)Evans, Oliver, 1755–1819, American inventor, b. near Newport, Del. He joined his brothers in a flour-milling business in Wilmington, and after studying similar earlier devices, he developed, install...

Ellsworth, Oliver

(Encyclopedia)Ellsworth, Oliver, 1745–1807, American political leader, 3d chief justice of the United States (1796–1800), b. Windsor, Conn. A Hartford lawyer, he was (1778–83) a member of the Continental Cong...

Holden, Oliver

(Encyclopedia)Holden, Oliver hōlˈdən [key], 1765–1844, American composer and compiler of hymns, b. Shirley, Mass. His popular tune Coronation, to Edward Perronet's hymn All Hail the Power of Jesus' Name, first...

Goldsmith, Oliver

(Encyclopedia)Goldsmith, Oliver, 1730?–1774, Anglo-Irish author. The son of an Irish clergyman, he was graduated from Trinity College, Dublin, in 1749. He studied medicine at Edinburgh and Leiden, but his career ...

Oliver, Andrew

(Encyclopedia)Oliver, Andrew, 1706–74, lieutenant governor of colonial Massachusetts (1771–73), b. Boston. Oliver was elected to the provincial council in 1746 and later served as secretary of the province. His...

Oliver, Isaac

(Encyclopedia)Oliver or Olivier, Isaac ōlĭvˈēər [key], 1556?–1617, English miniature painter. Oliver was a worthy follower of Hilliard as miniature painter to Elizabeth's court. His work, more naturalistic t...