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X
(Encyclopedia)X, 24th letter of the alphabet. In English it has no peculiar sound, but stands for the combination ks as in fox, or gz as in exempt, or, initially, for the sound of z as in xenia. In words from Greek...analog-to-digital conversion
(Encyclopedia)analog-to-digital or A/D conversion, the process of changing continuously varying data, such as voltage, current, or shaft rotation, into discrete digital quantities that represent the magnitude of th...Point Judith
(Encyclopedia)Point Judith, promontory extending into Block Island Sound, S R.I., in the town of Narragansett. A U.S. Coast Guard station and a lighthouse are there. ...thunder
(Encyclopedia)thunder, sound produced along a path of a lightning flash, caused by the rapid heating and expansion of the adjacent air; lightning can heat air to temperatures as much as five times hotter than those...Gance, Abel
(Encyclopedia)Gance, Abel, 1889–1981, pioneering French filmmaker. He acted on the stage in the early 1900s and appeared on the silent screen. From 1911 he wrote and directed several films; his first important fi...Outer Banks
(Encyclopedia)Outer Banks or the Banks, chain of sand barrier islands and peninsulas, c.175 mi (280 km), along the Atlantic coast of SE Va. and E N.C. Separated by inlets and enclosing several saltwater lagoons, or...wind tunnel
(Encyclopedia)wind tunnel, apparatus for studying the interaction between a solid body and an airstream. A wind tunnel simulates the conditions of an aircraft in flight by causing a high-speed stream of air to flow...Deal Island
(Encyclopedia)Deal Island, small island, off the western shore of Delmarva peninsula, in Tangier Sound, SE Md. It is an oyster, clam, and crab shipping and processing center. ...sonar
(Encyclopedia)sonar sōˈnär [key], device used underwater for locating submerged objects and for submarine communication by means of sound waves. The term sonar is an acronym for sound navigation ranging. The mai...Greenwich, town, United States
(Encyclopedia)Greenwich grĕnˈĭch [key], residential town (2020 pop. 63,518), Fairfield co., SW Conn., on ...Browse by Subject
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