closed force polygon
21virtual reality — a realistic simulation of an environment, including three dimensional graphics, by a computer system using interactive software and hardware. [1985 90] * * * Use of computer modeling and simulation to enable a person to interact with an… …
22Drainage basin — Example of a drainage basin. The dashed line is the main water divide of the hydrographic basin A drainage basin is an extent or an area of land where surface water from rain and melting snow or ice converges to a single point, usually the exit… …
23Devizes — For the constituency, see Devizes (UK Parliament constituency). Coordinates: 51°21′11″N 1°59′38″W / 51.353°N 1.994°W / 51.353; 1.99 …
24Another World (video game) — For the video game called The Another World , see Ni no Kuni. Another World One of several box arts used for Another World Developer(s) …
25Caleb Shang — Caleb James Shang C. J. Shang, c. September 1918 Cairns Historical Society Nickname Charlie Born 4 …
26Regular — The term regular can mean normal or obeying rules. Regular may refer to:In organizations: * Regular Army for usage in the U.S. Army * Regular clergy, members of a religious order subject to a rule of life * Regular Force for usage in the Canadian …
27Phoenix (spacecraft) — This article is about the Mars lander. For the Star Trek spacecraft, see Phoenix (Star Trek). For other uses, see Phoenix (disambiguation). Phoenix Mars Mission Artist s impression of the Phoenix spacecraft as it lands on Mars Operator NASA …
28fullerene — /fool euh reen /, n. any of a class of molecules of carbon having a roughly spherical shape. [1985 90; after R. Buckminster FULLER; see ENE] * * * Any of a class of all carbon molecules whose atoms are arranged in closed hollow shells. Allotropes …
29South America — South American. a continent in the S part of the Western Hemisphere. 271,000,000; ab. 6,900,000 sq. mi. (17,871,000 sq. km). * * * Continent, Western Hemisphere. The world s fourth largest continent, it is bounded by the Caribbean Sea to the… …
30Manchester Regiment — For the Jacobite unit, see Manchester Regiment (Jacobite). The Manchester Regiment …
