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Tolong dong terjemahin ini. Jangan pake google translate Radio is a form of communication in which intelligence is transmitted without wires from one point to another by means of electromagnetic waves. Early forms of communication over great distances were the telephone and the telegraph. They required wires between the sender and receiver. Radio, on the other hand, requires no such physical connection. It relies on the radiation of energy from a transmitting antenna in the form of radio waves. These radio waves, traveling at the speed of light (300,000 km/sec), carry the information. When the waves arrive at a receiving antenna,when the waves arrive at a receiving antenna, the original information contained in the radio waves is retrieved and presented in an understanable form such as sound from a loudspeaker. The principles of radio had been demonstrated in the early 1800s by scientist, such as michael faraday and joseph henry. They had individually induced a current ini another wire that was not physically connected to the first. All radio progammes or signals are transmitter within a broad spectrum of waves called the electromaknetic spectrum . this spectrum is responsible for producing a variety of waves, including those that can be detected by man-made machines, such as X-rays. Radio waves are among the many types of electromagnetic waves that travel within the elektromagnetic spectrum. Radio waves can be defined by their frequency, which is the number of times they pass through a complete cycle per second.besides, we can define radio waves by their wavelength, which is determined by the distance travelled from the crest of one wave to the crest of the next Tolong dong yaa.. Please
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