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neutrino astronomy

(Encyclopedia)neutrino astronomy, study of stars by means of their emission of neutrinos, fundamental particles that result from nuclear reactions and are emitted by stars along with light. Approximately 100 billio...

galvanometer

(Encyclopedia)CE5 Galvanometer galvanometer gălˌvənŏmˈətər [key], instrument used to determine the presence, direction, and strength of an electric current in a conductor. All galvanometers are based upo...

Sebastiano del Piombo

(Encyclopedia)Sebastiano del Piombo sābästyäˈnō dĕl pyômˈbō [key], c.1485–1547, Italian painter of the Venetian school, whose real name was Sebastiano Luciani. Although he was trained by Giovanni Bellini...

Coeur d'Alene, indigenous people of North America

(Encyclopedia)Coeur d'Alene kûrdəlānˈ [key], indigenous people of North America whose language belongs to the Salishan branch of the Algonquian-Wakashan linguistic stock (see Native American languages). They oc...

Ctenophora

(Encyclopedia)CE5 Pleurobrachia, representative of the phylum Ctenophora Ctenophora tĭnŏfˈərə [key], a small phylum of exclusively marine, invertebrate animals, commonly known as comb jellies. Because they...

Northwest Passage

(Encyclopedia)Northwest Passage, water routes through the Arctic Archipelago, N Canada, and along the northern coast of Alaska between the Pacific and Atlantic oceans. Even though the explorers of the 16th cent. de...

Somerset, Edmund Beaufort, 2d duke of

(Encyclopedia)Somerset, Edmund Beaufort, 2d duke of, d. 1455, English statesman and general. He fought in France in the Hundred Years War, receiving his first command in 1431, recapturing Harfleur in 1440, and reli...

mass spectrograph

(Encyclopedia)mass spectrograph, device used to separate electrically charged particles according to their masses; a form of the instrument known as a mass spectrometer is often used to measure the masses of isotop...

mast

(Encyclopedia)mast, large metal or timber pole secured vertically or nearly vertically in a ship, used primarily for supporting sails and rigging. The mast is as old as sailing vessels, and the oldest sailboats dep...

Ross Sea

(Encyclopedia)Ross Sea, arm of the Pacific Ocean, Antarctica, between Victoria Land and Marie Byrd Land. It was discovered in 1841 by Sir James Clark Ross, a British explorer. Ross Island with Mt. Erebus, an active...