direct driven antenna
51Wardenclyffe Tower — (1901 ndash; 1917) also known as the Tesla Tower, was an early wireless telecommunications aerial tower designed by Nikola Tesla and intended for commercial trans Atlantic wireless telephony, broadcasting, and to demonstrate the transmission of… …
52Spirit rover — (MER A) Artist s concept of Rover on Mars Operator NASA Mission type Rover Launch date …
53Defence Research and Development Organisation — Sanskrit: बलस्य मूलं विज्ञानम् Strength s Origin is in Science [1] Agency overvi …
54EDO Corporation — Former type Public (NYSE:EDO) Fate Acquired by ITT Corporation Predecessor Edo Aircraft Corporation Successor ITT Defense Elec …
55Algonquin Radio Observatory — The Algonquin Radio Observatory (ARO) is a radio telescope research facility located in the Algonquin Provincial Park in Ontario, Canada. The site s primary instrument is a major 46 m (150 ft) parabolic dish radio antenna. This instrument is… …
56radioactivity — /ray dee oh ak tiv i tee/, n. Physics, Chem. the phenomenon, exhibited by and being a property of certain elements, of spontaneously emitting radiation resulting from changes in the nuclei of atoms of the element. Also called activity. [1895… …
57Mir — This article is about the Soviet/Russian space station. For other uses, see Mir (disambiguation). Mir …
58Volleyball — For other uses, see Volleyball (disambiguation). V ball redirects here. For the cricket variant, see V Ball cricket. Volleyball …
59Amelia Earhart — Earhart redirects here. For the asteroid, see 3895 Earhart. Amelia Earhart Amelia Earhart …
60Spark-gap transmitter — A spark gap transmitter is a device for generating radio frequency electromagnetic waves. These devices served as the transmitters for most wireless telegraphy systems for the first three decades of radio (1887 ndash;1916) and the first… …
