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Honorius II

(Encyclopedia)Honorius II, d. 1130, pope (1124–30), an Italian named Lamberto, b. Bologna; successor of Calixtus II. Before becoming pope he spent several years in Germany adjusting the quarrel over investiture b...

civics

(Encyclopedia)civics, branch of learning that treats of the relationship between citizens and their society and state, originally called civil government. With the large immigration into the United States in the la...

solar cell

(Encyclopedia)solar cell, semiconductor devised to convert light to electric current. It is a specially constructed diode, usually made of forms of crystalline silicon or of thin films (as of copper indium gallium ...

radio astronomy

(Encyclopedia)radio astronomy, study of celestial bodies by means of the electromagnetic radio frequency waves they emit and absorb naturally. Radio waves also come from outside the Milky Way. These extragalact...

erg

(Encyclopedia)erg ûrg [key], unit of work or energy in the cgs system of units, which is based on the metric system; it is the work done or energy expended by a force of 1 dyne acting through a distance of 1 centi...

Josephson, Brian David

(Encyclopedia)Josephson, Brian David, 1940–, British physicist, Ph.D. Cambridge, 1964. After several postdoctoral appointments, he joined the faculty at Cambridge in 1974. Josephson was co-recipient, with Leo Esa...

prime mover

(Encyclopedia)prime mover: see energy, sources of. ...

dream

(Encyclopedia)dream, mental activity associated with the rapid-eye-movement (REM) period of sleep. It is commonly made up of a number of visual images, scenes or thoughts expressed in terms of seeing rather than in...

Texas, University of

(Encyclopedia)Texas, University of, main campus at Austin; coeducational; state supported; chartered 1881, opened 1883. Medical facilities include health science centers with medical schools at Houston and San Anto...

calorie

(Encyclopedia)calorie, abbr. cal, unit of heat energy in the metric system. The measurement of heat is called calorimetry. The calorie, or gram calorie, is the quantity of heat required to raise the temperature of ...