Class Apparatus and installations for lighting, heating, cooling, steam generating, cooking, drying, ventilating, water supply and sanitary purposes. Microwave radar grew to become the central technology used in air visitors management, maritime navigation, anti-aircraft defense, ballistic missile detection, and later many different makes use of. Radar and satellite communication motivated the development of modern microwave antennas; the parabolic antenna , cassegrain antenna, lens antenna, slot antenna, and phased array. Some of the dish antennas of the Atacama Large Millimeter Array a radio telescope situated in northern Chile.

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