13-letter words containing r, a, v, e, h
- vannevar bush — (person) Dr. Vannevar Bush, 1890-1974. The man who invented hypertext, which he called memex, in the 1930s. Bush did his undergraduate work at Tufts College, where he later taught. His masters thesis (1913) included the invention of the Profile Tracer, used in surveying work to measure distances over uneven ground. In 1919, he joined MIT's Department of Electrical Engineering, where he stayed for twenty-five years. In 1932, he was appointed vice-president and dean. At this time, Bush worked on optical and photocomposition devices, as well as a machine for rapid selection from banks of microfilm. Further positions followed: president of the Carnegie Institute in Washington, DC (1939); chair of National Advisory Committee for Aeronautics (1939); director of Office of Scientific Research and Development. This last role was as presidential science advisor, which made him personally responsible for the 6,000 scientists involved in the war effort. During World War II, Bush worked on radar antenna profiles and the calculation of artillery firing tables. He proposed the development of an analogue computer, which later became the Rockefeller Differential Analyser. Bush is the pivotal figure in hypertext research. His ground-breaking 1945 paper, "As We May Think," speculated on how a machine might be created to assist human reasoning, and introduced the idea of an easily accessible, individually configurable storehouse of knowledge. This machine, which he dubbed "memex," in various ways anticipated hypermedia and the World Wide Web by nearly half a century.
- vapourer moth — a tussock moth, Orgyia antiqua, of hedgerows and trees, the female of which is wingless and lays her eggs on her former cocoon
- vapourishness — the quality or state of being vapourish
- varied thrush — a plump thrush, Ixoreus naevius, of western North America, resembling a robin with a dark band across the chest.
- vice-chairman — a member of a committee, board, group, etc., designated as immediately subordinate to a chairman and serving as such in the latter's absence; a person who acts for and assists a chairman.
- vindhya range — a mountain range in central India: separates the Ganges basin from the Deccan, marking the limits of northern and peninsular India. Greatest height: 1113 m (3651 ft)
- visceral arch — Embryology. branchial arch.
- vowel harmony — a phonological rule in some languages, as Hungarian and Turkish, requiring that the vowels of a word all share a specified feature, such as front or back articulation, thereby conditioning the form that affixes may take, as in forming the Turkish plurals evler “houses” from ev “house” and adamlar “men” from adam “man.”.
- white slavery — the condition of or traffic in white slaves.
- wolverhampton — a city in West Midlands, in W England.