Search

Search results

Displaying 341 - 350

Death Valley

(Encyclopedia) Death Valley, SE Calif. and SW Nev., a deep, arid basin, 140 mi (225 km) long, bordered on the W by the Panamint Range and on the E by the Amargosa Range. In summer the valley has…

hockey, field

(Encyclopedia) hockey, field, outdoor stick and ball game. Field hockey, like many sports, is of obscure origins, but traces in one form or another to the ancient Egyptians and Persians, making it…

rhythm, biological

(Encyclopedia) rhythm, biological, or biorhythm, cyclic pattern of physiological changes or changes in activity in living organisms, most often synchronized with daily, monthly, or annual cyclical…

Schelling, Friedrich Wilhelm Joseph von

(Encyclopedia) Schelling, Friedrich Wilhelm Joseph vonSchelling, Friedrich Wilhelm Joseph vonfrēˈdrĭkh vĭlˈhĕlm yōˈzĕf fən shĕˈlĭng [key], 1775–1854, German philosopher. After theological study at…

school vouchers

(Encyclopedia) school vouchers, government grants aimed at improving education for the children of low-income families by providing school tuition that can be used at public or private schools. The…

sextant

(Encyclopedia) CE5 Sextant sextant, instrument for measuring the altitude of the sun or another celestial body; such measurements can then be used to determine the observer's geographical…

programmed instruction

(Encyclopedia) programmed instruction, method of presenting new subject matter to students in a graded sequence of controlled steps. Students work through the programmed material by themselves at…

Pius V, Saint

(Encyclopedia) Pius V, Saint, 1504–72, pope (1566–72), an Italian named Michele Ghislieri, b. near Alessandria; successor of Pius IV. He was ordained in the Dominicans (1528) and became celebrated…

peptide

(Encyclopedia) peptide, organic compound composed of amino acids linked together chemically by peptide bonds. The peptide bond always involves a single covalent link between the α-carboxyl (oxygen-…

Erechtheum

(Encyclopedia) ErechtheumErechtheumĭrĕkˈthēəm [key] [for Erechtheus], Gr. Erechtheion, temple in Pentelic marble, on the Acropolis at Athens. One of the masterpieces of Greek architecture, it was…