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Glaisher, James

(Encyclopedia)Glaisher, James glāˈshər [key], 1809–1903, English meteorologist and balloonist, b. London. He served as superintendent of the department of meteorology and magnetism at Greenwich Observatory fro...

Galle, Johann Gottfried

(Encyclopedia)Galle, Johann Gottfried yōˈhän gôtˈfrēt gäˈlə [key], 1812–1910, German astronomer. He is noted for his discovery of the planet Neptune, Sept. 23, 1846, by following the guidance of calculat...

geophysics

(Encyclopedia)geophysics, study of the structure, composition, and dynamic changes of the earth, its atmosphere, hydrosphere and magnetosphere, based on the principles of physics. The term was probably first used i...

Wegener, Alfred Lothar

(Encyclopedia)Wegener, Alfred Lothar älˈfrĕt lōtärˈ vĕgˈənər [key], 1880–1930, German geologist, meteorologist, and Arctic explorer. Early in his life, he was on the staff of the aeronautical observator...

Hough, George Washington

(Encyclopedia)Hough, George Washington hŭf [key], 1836–1909, American astronomer, b. Montgomery co., N.Y., grad. Union College, 1856. He discovered 627 double stars and made systematic studies of the surface of ...

Saussure, Horace Bénédict de

(Encyclopedia)Saussure, Horace Bénédict de də sōsürˈ [key], 1740–99, Swiss physicist and geologist. He was professor at the Univ. of Geneva from 1762 to 1786. He is famous for his studies of the geology, m...

Hoffmann, Friedrich

(Encyclopedia)Hoffmann, Friedrich hôfˈmän [key], 1660–1742, German physician. He taught and practiced at Halle from 1693. He studied and wrote on such varied topics as pediatrics, mineral waters, and meteorol...

Deluc, Jean André

(Encyclopedia)Deluc, Jean André zhäN äNdrāˈ dəlükˈ [key], 1727–1817, Swiss geologist. During the first half of his life he was engaged mainly in business in Switzerland. He also made scientific excursions...

theodolite

(Encyclopedia)theodolite thēŏdˈəlītˌ [key], calibrated optical instrument used to determine relative position in surveying, navigation, and meteorology. It is similar in construction to a surveyor's transit, ...

MacCready, Paul Beattie

(Encyclopedia)MacCready, Paul Beattie, 1925–2007, American engineer and inventor known for his achievements in human-powered flight, b. New Haven, Conn., Ph.D. California Institute of Technology, 1952. In 1997 he...

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