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John Paul I

(Encyclopedia)John Paul I, 1912–78, pope (1978), an Italian (b. Canale d'Agordo) named Albino Luciani; successor of Paul VI. Born into a poor, working-class family, he trained at local seminaries and at the Grego...

brocade

(Encyclopedia)brocade brōkādˈ [key], fabric, originally silk, generally reputed to have been developed to a high state of perfection in the 16th and 17th cent. in France, Italy, and Spain. In China the weaving o...

Calef, Robert

(Encyclopedia)Calef, Robert kāˈləf [key], 1648–1719, known primarily as author of More Wonders of the Invisible World (1700). A Boston cloth merchant, probably born in England, he bitterly attacked Cotton Math...

photoengraving

(Encyclopedia)photoengraving, photomechanical process in the graphic arts, used principally for reproducing illustrations. The subject is photographed, and the image is recorded on a sensitized metal plate, which i...

zinc oxide

(Encyclopedia)zinc oxide, chemical compound, ZnO, that is nearly insoluble in water but soluble in acids or alkalies. It occurs as white hexagonal crystals or a white powder commonly known as zinc white. Zinc white...

Bialik, Hayyim Nahman

(Encyclopedia)Bialik, Hayyim Nahman hīˈyəm näˈmən byäˈlēk [key], 1873–1934, Hebrew poet, publisher in Odessa, Berlin, and Tel-Aviv, b. Volhynia, Russia. As an editor and publisher Bialik spread the ideas...

Black Monday

(Encyclopedia)Black Monday, Oct. 19, 1987, in U.S. history, day of financial panic. The Dow Jones Average fell 508.32 points, a drop of 22.6%, the largest since 1914. The point decline as well as the volume, 604.33...

Braga, Teófilo

(Encyclopedia)Braga, Teófilo təôˈfəlo͝o bräˈgä [key], 1843–1924, Portuguese intellectual and political leader, b. Ponta Delgada in the Azores. At the Univ. of Coimbra he was a member of the positivist ci...

Le Châtelier's principle

(Encyclopedia)Le Châtelier's principle, chemical principle that states that if a system in equilibrium is disturbed by changes in determining factors, such as temperature, pressure, and concentration of components...

red shift

(Encyclopedia)red shift or redshift, in astronomy, the systematic displacement of individual lines in the spectrum of a celestial object toward the red, or longer wavelength, end of the visible spectrum. The effect...