(Encyclopedia) Sprengel, Christian KonradSprengel, Christian Konradkrĭsˈtyän kônˈrät shprĕngˈəl [key], 1750–1816, German botanist. Although director of a school at Spandau and tutor in Berlin, he…
HEARING ABILITYDOPPLER EFFECTULTRASOUNDFIND OUT MORESound can be low-pitched, like the rumble of a large truck, or high-pitched, like a whistle. The pitch of a sound depends on the frequency of…
(Encyclopedia) Christian art and architecture: see especially the survey articles on Early Christian art and architecture, Byzantine art and architecture, Coptic art, Merovingian art and architecture…
(Encyclopedia) grace, in Christian theology, the free favor of God toward humans, which is necessary for their salvation. A distinction is made between natural grace (e.g., the gift of life) and…
(Encyclopedia) Kaboré, Roch Marc Christian, 1957–, Burkinabé political leader. Following a career in banking, he joined Blaise Compaoré's government, serving as minister of transport and…
(Encyclopedia) patriarch, in Christian churches, title of certain exalted bishops, implying authority over a number of other bishops. There were originally three patriarchates: the West, held by the…
(Encyclopedia) Southern Christian Leadership Conference (SCLC), civil-rights organization founded in 1957 by Martin Luther King, Jr., and headed by him until his assassination in 1968. Composed…
(Encyclopedia) Woman's Christian Temperance Union (WCTU), organization that seeks to upgrade moral life, especially through abstinence from alcohol. The National WCTU of the United States was founded…
(Encyclopedia) Young Men's Christian Association, (the Y or YMCA), organization having as its objective the development of values and behaviors that are consistent with Christian principles. Despite…
