sub-synchronous satellite
71Distributed operating system — A distributed operating system is the logical aggregation of operating system software over a collection of independent, networked, communicating, and spatially disseminated computational nodes.[1] Individual system nodes each hold a discrete… …
72Orbital elements — are the parameters required to uniquely identify a specific orbit. In celestial mechanics these elements are generally considered in classical two body systems, where a Kepler orbit is used (derived from Newton s laws of motion and Newton s law… …
73Elliptic orbit — A small body in space orbits a large one (like a planet around the sun) along an elliptical path, with the large body being located at one of the ellipse foci …
74Orbital eccentricity — This article is about eccentricity in astrodynamics. For other uses, see Eccentricity (disambiguation). An elliptic Kepler orbit with an eccentricity of 0.7 (red), a parabolic Kepler orbit (green) and a hyperbolic Kepler orbit with an… …
75Technology & Engineering Emmy Award — Infobox award name = Technology and Engineering Emmy Award imagesize = 165px caption = Technology and Engineering Emmy Award description = Outstanding achievement in technical or engineering development presenter = ATAS/NATAS country = USA year …
76Osculating orbit — In astronomy, and in particular in astrodynamics, the osculating orbit of an object in space (at a given moment of time) is the gravitational Kepler orbit (i.e. ellipse or other conic) that it would have about its central body (corresponding to… …
77n-body problem — This article is about the problem in classical mechanics. For the problem in quantum mechanics, see Many body problem. The n body problem is the problem of predicting the motion of a group of celestial objects that interact with each other… …
78Electric power transmission — Electric transmission redirects here. For vehicle transmissions, see diesel electric transmission. 400 kV high tension transmission lines near Madrid Electric power transmission or high voltage electric transmission is the bulk transfer of… …
79Lunar mare — The lunar maria  /ˈm …
80X-machine — The X machine ( XM ) is a theoretical model of computation introduced by Samuel Eilenberg in 1974.S. Eilenberg (1974) Automata, Languages and Machines, Vol. A . Academic Press, London.] The X in X machine represents the fundamental data type on… …
