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frozen foods

(Encyclopedia)frozen foods, products of the food preservation process of freezing. This process has been employed by people in the Arctic from prehistoric times. Eskimos throw fresh-caught fish on the ice to freeze...

Condé, Louis II de Bourbon, prince de

(Encyclopedia)Condé, Louis II de Bourbon, prince de, 1621–86, French general, called the Great Condé; son of Henri II de Condé. Among his early victories in the Thirty Years War were those of Rocroi (1643), Fr...

depth charge

(Encyclopedia)depth charge, explosive device used against submarines and other underwater targets, either rolled into the water from rails on the stern of a ship or propelled from depth charge throwers. The charge ...

Evans, Frederick H.

(Encyclopedia)Evans, Frederick H., 1853–1943, English photographer. Evans retired from bookselling in 1898 when he began his photographic career. He became internationally famous for his exquisite platinotype ima...

Beolco, Angelo

(Encyclopedia)Beolco, Angelo änjĕˈlō bāôlˈkō [key], 1502–42, Italian actor and playwright. While managing farms belonging to his family, Beolco had much contact with Paduan peasants, with whom he was deep...

scheelite

(Encyclopedia)scheelite shāˈlīt, shēˈ– [key], heavy white or yellow mineral, calcium tungstate, CaWO4, crystallizing in the tetragonal system. It is found in granite pegmatites, in contact-metamorphic deposi...

African swine fever

(Encyclopedia)African swine fever (ASF), highly contagious, deadly viral disease of swine. Its acute form, which is typically fatal, is characterized by high fever, loss of appetite, lethargy, and redness in the sk...

pesticide

(Encyclopedia)pesticide, biological, physical, or chemical agent used to kill plants or animals that are harmful to people; in practice, the term pesticide is often applied only to chemical agents. Various pesticid...

cryosurgery

(Encyclopedia)cryosurgery krīˈōsrˌjərē [key], bloodless surgical technique using a supercooled probe to destroy diseased or superfluous tissue. Liquid nitrogen circulating through the instrument cools it to t...

Menzel, Donald Howard

(Encyclopedia)Menzel, Donald Howard, 1901–76, American astrophysicist, b. Florence, Colo. From 1926 to 1932 he was with the Lick Observatory in Calif. In 1932 he joined the faculty at Harvard, where he became pro...