Air Force reports on the Roswell UFO incident — The two Air Force reports on the Roswell UFO incident, published in 1994/5 and 1997, form the basis for much of the skeptical explanation for the 1947 incident, the purported recovery of aliens and their craft from the vicinity of Roswell, New… … Wikipedia
navigation — 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.… … Universalium
Compass — This article is about the direction finding instrument used in navigation. For other uses, see Compass (disambiguation). A simple dry magnetic pocket compass … Wikipedia
List of G.I. Joe: A Real American Hero characters: S-Z — This is an alphabetical List of G.I. Joe: A Real American Hero characters whose code names start with the letters S Z. Contents 1 Salvo 2 Scarlett 3 Sci Fi … Wikipedia
Earth exploration — Introduction the investigation of the surface of the Earth and of its interior. By the beginning of the 20th century most of the Earth s surface had been explored, at least superficially, except for the Arctic and Antarctic regions. Today the… … Universalium
Coast Artillery fire control system — A conceptual diagram of the flow of fire control data in the Coast Artillery (in 1940). The set forward point of the target was generated by using the plotting board (1). This position was then corrected for factors affecting range and azimuth… … Wikipedia
Mount Whitney — This article is about the mountain. For the former town with this name, see Lone Pine Station, California. For the ship, see USS Mount Whitney (LCC 20). Mount Whitney East Face close up seen from the Whitney Portal … Wikipedia
beacon — i. An aeronautical light arranged, either through optical design or mechanical motion, to be visible to all azimuths, either continuously or consecutively, to designate a particular point on the surface of the earth. It emits a distinctive, or… … Aviation dictionary
