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Radio Astronomy , Matter in the universe emits radiation (energy) from all parts of the electromagnetic spectrum, the range of wavelengths produced by the interaction… Frequency modulation , frequency modulation (FM) Form of radio transmission. It is the variation of the frequency of a transmitted radio carrier wave by the signal being br… Modulation , modulation (in communications)
modulation, in communications, process in which some characteristic of a wave (the carrier wave) is made to vary in ac… Antenna , antenna (ăntĕn´ə), in electronics, system of wires or other conductors used to transmit or receive radio or other electromagnetic waves (see radio);… Radio waves , radio telescope Instrument used to collect and record radio waves from space. The basic design is the large single dish or parabolic reflector, up to… Mountain Waves , lee waves
lee waves Air waves in the lee of a mountain barrier, where a stable layer of air, after displacement by movement over the barrier, returns…
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airwaves