synchronous satellite communications system
71celestial mechanics — the branch of astronomy that deals with the application of the laws of dynamics and Newton s law of gravitation to the motions of heavenly bodies. [1815 25] * * * Branch of astronomy that deals with the mathematical theory of the motions of… …
72Geosynchronous orbit — A geosynchronous orbit is an orbit around the Earth with an orbital period matching the Earth s sidereal rotation period [V. Chobotov, ed., (1996) Orbital Mechanics, 2nd edition , AIAA Education Series, p. 304.] . This synchronization means that… …
73History of virtual learning environments 1990s — In the history of virtual learning environments, the 1990s was a time of growth, primarily due to advent of the affordable computer and of the Internet.1990s1990* Formal Systems Inc. of Princeton, NJ, USA introduces a DOS based Assessment… …
74History of virtual learning environments — A virtual learning environment (VLE) is a system that creates an environment designed to facilitate teachers in the management of educational courses for their students, especially a system using computer hardware and software, which involves… …
75Abkürzungen/Computer — Dies ist eine Liste technischer Abkürzungen, die im IT Bereich verwendet werden. A [nach oben] AA Antialiasing AAA authentication, authorization and accounting, siehe Triple A System AAC Advanced Audio Coding AACS …
76Liste der Abkürzungen (Computer) — Dies ist eine Liste technischer Abkürzungen, die im IT Bereich verwendet werden. A [nach oben] AA Antialiasing AAA authentication, authorization and accounting, siehe Triple A System AAC Advanced Audio Coding AACS …
77aerospace industry — Introduction assemblage of manufacturing concerns that deal with vehicular flight within and beyond the Earth s atmosphere. (The term aerospace is derived from the words aeronautics and spaceflight.) The aerospace industry is engaged in the …
78E-learning — For the term online learning as used in machine learning, see Online machine learning. E learning comprises all forms of electronically supported learning and teaching. The information and communication systems, whether networked learning or not …
79Space elevator — A space elevator for Earth would consist of a cable anchored to the Earth s equator, reaching into space. By attaching a counterweight at the end (or by further extending the cable upward for the same purpose), the center of mass is kept well… …
80Radio — is the transmission of signals, by modulation of electromagnetic waves with frequencies below those of visible light.Electromagnetic radiation travels by means of oscillating electromagnetic fields that pass through the air and the vacuum of… …
