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Barnard, Henry

(Encyclopedia)Barnard, Henry, 1811–1900, American educator, b. Hartford, Conn., grad. Yale, 1830. He studied law and was admitted to the bar in 1835. As a member (1837–39) of the Connecticut legislature, he ori...

retrograde motion

(Encyclopedia)retrograde motion, in astronomy, real or apparent movement of a planet, dwarf planet, moon, asteroid, or comet from east to west relative to the fixed stars. The most common direction of motion in the...

perturbation

(Encyclopedia)perturbation pŭrˌtərbāˈshən [key], in astronomy and physics, small force or other influence that modifies the otherwise simple motion of some object. The term is also used for the effect produce...

Lindsey, Benjamin Barr

(Encyclopedia)Lindsey, Benjamin Barr (Ben Lindsey), 1869–1943, American judge and reformer, b. Jackson, Tenn. As judge of the juvenile court of Denver from 1900 to 1927, he founded the American juvenile court sys...

Mineral Wells

(Encyclopedia)Mineral Wells, city (1990 pop. 14,870), Palo Pinto and Parker counties, N Tex.; inc. 1882. Aluminum products, bottled mineral water, clothing, and pharmaceuticals are produced, and there is gas proces...

Abu Hanifa

(Encyclopedia)Abu Hanifa äbo͞oˈ hänēˈfä [key], 699–767, Muslim jurist. He founded the Hanafite system of Islamic jurisprudence, which gives the judge considerable discretion when the Qur'an and the Sunna (...

Kawartha Lakes

(Encyclopedia)Kawartha Lakes kəwôrˈthə [key], group of 14 lakes, in a region c.50 mi (80 km) long and c.25 mi (40 km) wide, S Ont., Canada, near the towns of Lindsay and Peterborough. Balsam is the largest lake...

Ket

(Encyclopedia)Ket kĕˈtyə [key], river, c.845 mi (1,360 km) long, W central Siberian Russia. It rises in central Siberia, just N of Krasnoyarsk, and flows NW and W into the Ob. The Ket is navigable c.410 mi (660 ...

Fournier, Pierre Simon

(Encyclopedia)Fournier, Pierre Simon pyĕr sēmôNˈ fo͞ornyāˈ [key], 1712–68, Parisian type founder. Fournier devised the first point system for measuring and naming sizes of type in 1737. He designed a numbe...

Eichler, August Wilhelm

(Encyclopedia)Eichler, August Wilhelm ouˈgo͝ost vĭlˈhĕlm īkhˈlər [key], 1839–87, German botanist. He worked out the symmetry of the parts of a flower and developed a system of plant classification which, ...