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Normandy campaign

(Encyclopedia)Normandy campaign, June to Aug., 1944, in World War II. The Allied invasion of the European continent through Normandy began about 12:15 a.m. on June 6, 1944 (D-day). The plan, known as Operation Over...

Rhadamanthus

(Encyclopedia)Rhadamanthus rădˌəmănˈthəs [key], in Greek mythology, son of Zeus and Europa. Renowned for his justice on earth, the gods made him one of the judges of the dead. ...

gravitation

(Encyclopedia)gravitation, the attractive force existing between any two particles of matter. The term gravitygravity is commonly used synonymously with gravitation, but in correct usage a definite distinction is...

mountain

(Encyclopedia)mountain, high land mass projecting conspicuously above its surroundings and usually of limited width at its summit. Although isolated mountains are not unusual, mountains commonly form ranges, compri...

planetary system

(Encyclopedia)planetary system, a star and all the celestial bodies bound to it by gravity, especially planets and their natural satellites. Until the last decade of the 20th cent., the only planetary system known ...

Epiphany

(Encyclopedia)Epiphany ĭpĭfˈənē [key] [Gr.,=showing], a prime Christian feast, celebrated Jan. 6, called also Twelfth Day or Little Christmas. Its eve is Twelfth Night. It commemorates three events—the bapti...

White, Ellen Gould (Harmon)

(Encyclopedia)White, Ellen Gould (Harmon), 1827–1915, leader of the Seventh-day Adventists, b. Gorham, Maine. Converted at the age of 15 to the beliefs of the Adventists, she began to receive visions accepted as ...

altimeter

(Encyclopedia)altimeter ăltĭmˈĭtər, ălˈtĭmēˌtər [key], device for measuring altitude. The most common type is an aneroid barometer calibrated to show the drop in atmospheric pressure in terms of linear e...

horizon

(Encyclopedia)horizon, in astronomy, roughly circular line bounding an observer's view of the surface of the earth where the sky and earth seem to meet. This is the visible horizon. At sea the visible horizon is a ...

Hansen, James Edward

(Encyclopedia)Hansen, James Edward, 1941–, American astrophysicist and climatologist, b. Denison, Iowa, Ph.D. Univ. of Iowa, 1967. In 1967 he joined the Goddard Institute for Space Studies, and served as director...