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Black Friday

(Encyclopedia)Black Friday, Sept. 24, 1869, in U.S. history, day of financial panic. In 1869 a small group of American financial speculators, including Jay Gould and James Fisk, sought the support of federal offici...

Friday

(Encyclopedia)Friday: see Sabbath; week. ...

Good Friday

(Encyclopedia)Good Friday, anniversary of Jesus' death on the cross. According to the Gospels, Jesus was put to death on the Friday before Easter Day. Since the early church Good Friday has been observed by fasting...

carbon black

(Encyclopedia)carbon black, mixture of partially burned hydrocarbons. Carbon black is produced by partial combustion of natural gas. It is used as a black pigment for inks and paints, and is used in large amounts b...

bone black

(Encyclopedia)bone black, solid black material, largely carbon, produced by heating animal bones to high temperatures in the absence of air so as to drive off volatile substances. Finely divided bone black is usefu...

Black, Hugh

(Encyclopedia)Black, Hugh, 1868–1953, Scottish-American theologian and author. After serving as a pastor in Paisley and Edinburgh, he emigrated to the United States in 1906 to begin a professorship of practical t...

Black, James

(Encyclopedia)Black, James, 1823–93, American temperance leader. A Pennsylvania lawyer, he was active in state and national temperance work. His plan for a National Publication House was adopted by the National T...

Black, Joseph

(Encyclopedia)Black, Joseph, 1728–99, Scottish chemist and physician, b. France. He was professor of chemistry at Glasgow (1756–66) and from 1766 at Edinburgh. He is best known for his theories of latent heat a...

Black, Max

(Encyclopedia)Black, Max, 1909–88, American analytical philosopher, b. Baku, Russia (now Bakı, Azerbaijan), grad. Cambridge, Ph.D. Univ. of London, 1939. He taught at the Univ. of Illinois (1940–46) before goi...

Black Belt

(Encyclopedia)Black Belt, term applied to several areas of Mississippi and Alabama, the heart of the Old South, which are characterized by black soil and excellent cotton-growing conditions. The Black Belt area was...