Some of the technological applications of superconductivity include: the production of sensitive magnetometers based on SQUIDs fast digital circuits (including those based on Josephson junctions and rapid single flux quantum technology), powerful superconducting electromagnets used in maglev trains, Magnetic Resonance Imaging (MRI) and Nuclear ...
An antenna (plural antennae or antennas), or aerial, is an electrical device which converts electric power into radio waves, and vice versa. It is usually used with a radio transmitter or radio receiver.
Antennas: The actual emitters of radio signals. Antennas can be placed on towers (multiple) or can be installed stand alone on top of existing buildings. Stand alone antennas are small (well below 200 ft). You may also check multiple antennas to determine which cell phone carriers are located on a particular tower.