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Instructional design: The radio
The radio is one of the most useful objects ever invented. This is a device that s used to receive radio signals which are transmitted from a radio transmitter. The signals are classified in terms of strength. There are long wave signals and short wave signals. The signals are transmitted by way of modulation of the electromagnetic waves, which have frequencies found to be below the frequencies of the visible light. The radiations that are electromagnetic in nature are known to travel by way of oscillating electromagnetic fields, which go
