Columbia Encyclopedia

Search results

500 results found

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...

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...

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...

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...

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...

optical activity

(Encyclopedia)optical activity, the ability of asymmetric compounds to rotate the orientation of planar polarized light. Such compounds and their mirror images are know as enantiomers, or optical isomers. Although ...

cluster munitions

(Encyclopedia)cluster munitions or cluster bombs, air-dropped or ground-launched weapons that open in mid-air and scatter dozens, hundreds, or thousands of smaller submunitions (or bomblets) over a wide area. Such ...

Heath, Sir Edward Richard George

(Encyclopedia)Heath, Sir Edward Richard George, 1916–2005, British statesman. Educated at Oxford, he served in the Royal Artillery during World War II, rising to the rank of colonel. He was elected to Parliament ...

Marine Corps, United States

(Encyclopedia)Marine Corps, United States, military corps that forms a separate service within the U.S. Dept. of the Navy. The commandant of the Marine Corps is a member of the Joint Chiefs of Staff. During conflic...