Amorphous Solid, Amorphous semiconductors in electronics

Amorphous semiconductors, in the form of thin films prepared by methods such as that shown in Figure 4D, are important in applications requiring large areas of electronically active material. The first electronic application of amorphous semiconductors to occur on a large scale was

Smith Sound

The sound was discovered in 1616 by William Baffin and named for Sir Thomas Smythe (Smith), promoter of voyages to find a Northwest Passage. It was not until the mid-19th century that any explorer reached

Holcroft, Thomas

The son of a peddler, Holcroft worked as a stableboy, cobbler, and teacher before he was able to make his living as a writer. He is remembered for his melodrama The Road to Ruin (performed 1792, often revived); his translation of Beaumarchais's play Le Mariage de Figaro (Paris, 1784) under the title The Follies

Water Cock

(Gallicrex cinerea), marsh bird of the rail family, Rallidae (order Gruiformes). It occurs from India to Japan and throughout Southeast Asia to the Philippines. The male is blue-black with red legs, a strongly conical red bill, and a protruding red frontal shield. The female is mottled and barred yellowish brown. The water cock is troublesome in rice fields, where it likes

Pavese, Cesare

Born in a small town in which his father, an official, owned property, he moved with his family to Turin, where he attended high school and the university. Denied an outlet for his creative powers by Fascist control of literature,

Hammar, Lake

Arabic  Hawr Al-hammar,   large swampy lake in southeastern Iraq, south of the junction of the Tigris and Euphrates rivers. Fed by distributaries of the Euphrates, the lake (70 miles [110 km] long; 750 square miles [1,950 square km] in area) drains via a short channel into the Shatt al-Arab near Basra. It was once only a reed-filled marshland but was later utilized as a natural irrigation reservoir for the fertile soils

Antarctica, Birds

About 45 species of birds live south of the Antarctic Convergence, but only three—the emperor penguin (see photograph), Antarctic petrel, and South Polar (McCormick's) skua—breed exclusively on the continent or on nearby islands. An absence of mammalian land predators and the rich offshore food supply make Antarctic coasts a haven for immense seabird