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daylight saving time

(Encyclopedia)daylight saving time (DST), time observed when clocks and other timepieces are set ahead so that the sun will rise and set later in the day as measured by civil time. The amount of daylight on a given...

space medicine

(Encyclopedia)space medicine, study of the medical and biological effects of space travel on living organisms. The principal aim is to discover how well and for how long humans can withstand the extreme conditions ...

George, Saint

(Encyclopedia)George, Saint, 4th cent.?, perhaps a soldier in the imperial army who died for the faith in Asia Minor. His life is cloaked in legends; Gibbon's identification of him with George of Cappadocia is fals...

Faber, Frederick William

(Encyclopedia)Faber, Frederick William fāˈbər [key], 1814–63, English theologian and hymn writer. A friend of John Henry Newman and an adherent of the Oxford movement, he became (1843) rector of Eton. In 1845 ...

reredos

(Encyclopedia)reredos rērˈdŏs [key], ornamented wall or screen that rises behind the high altar of a church, forming a background for it. It may be placed against the apse wall at the extreme end or directly beh...

Stein, Gertrude

(Encyclopedia)Stein, Gertrude, 1874–1946, American author and patron of the arts, b. Allegheny (now part of Pittsburgh), Pa. A celebrated personality, she encouraged, aided, and influenced—through her patronage...

Shrove Tuesday

(Encyclopedia)Shrove Tuesday, day before Ash Wednesday (the beginning of Lent). In the Latin countries it is the last day of the carnival, called by the French Mardi Gras. ...

Tiw

(Encyclopedia)Tiw tür [key], ancient Germanic god. Originally a highly revered sky god, he was later worshiped as a god of war and of athletic events. He was identified with the Roman war god Mars, and among Germa...

Cambrian period

(Encyclopedia)Cambrian period [Lat. Cambria=Wales], first period of the Paleozoic geologic era (see Geologic Timescale, tablegeologic timescale, table) extending from approximately 570 to 505 million years ago. It ...

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...