distant echo
51Dravidian languages — Family of 23 languages indigenous to and spoken principally in South Asia by more than 210 million people. The four major Dravidian languages of southern India Telugu, Tamil, Kannada, and Malayalam have independent scripts and long documented… …
52Radar — For other uses, see Radar (disambiguation). A long range radar antenna, known as ALTAIR, used to detect and track space objects in conjunction with ABM testing at the Ronald Reagan Test Site on Kwajalein Atoll …
53Videoconferencing — See also: List of video telecommunication services and product brands A Tandberg T3 high resolution telepresence room in use (2008) …
54Passive radar — systems (also referred to as passive coherent location and passive covert radar) encompass a class of radar systems that detect and track objects by processing reflections from non cooperative sources of illumination in the environment, such as… …
55performing arts — arts or skills that require public performance, as acting, singing, or dancing. [1945 50] * * * ▪ 2009 Introduction Music Classical. The last vestiges of the Cold War seemed to thaw for a moment on Feb. 26, 2008, when the unfamiliar strains …
56Music of the Final Fantasy series — Music of Final Fantasy Final Fantasy I and II Final Fantasy III Final Fantasy IV Final Fantasy V Final Fantasy VI Final Fantasy VII series Final Fantasy VIII Final Fantasy IX Final Fantasy X Final Fantasy X 2 Final Fantas …
57New Worlds Mission — Starshade. The New Worlds Mission is a project planning to build a large occulter in space designed to block the light of nearby stars in order to observe their orbiting planets. The observations could be taken with an existing space telescope,… …
58Arthur C. Clarke — Arthur Clarke redirects here. For other uses, see Arthur Clarke (disambiguation). Sir Arthur C. Clarke, CBE Arthur C. Clarke at his home office in Colombo, Sri Lanka, 28 March 2005 Born 16 December 1917(1917 12 16) …
59navigation — navigational, adj. /nav i gay sheuhn/, n. 1. the act or process of navigating. 2. the art or science of plotting, ascertaining, or directing the course of a ship, aircraft, or guided missile. [1520 30; < L navigation (s. of navigatio) a voyage.… …
60commercial fishing — Introduction the taking of fish and other seafood and resources from oceans, rivers, and lakes for the purpose of marketing them. Fishing is one of the oldest employments of humankind. Ancient heaps of discarded mollusk shells (shell… …
