FM Radio Without Headphones
every time your phone commands you to put in headphones as soon as you try to access FM radio. Why is it that we have phones that can help us communicate with the other side of the globe without any problems, but we can’t create a more efficient way of listening to the radio? After all, the radio has existed for about a century now! Even so, how is it that our 21st century phones can’t access this age-old technology without the assistance of a simple wire?
Something seems fishy here.
Before we try to answer this question, let’s look at how the radio works.
Radio suggests the act of sending energy from one place to another without any form of direct wired connection. Radio waves move from one piece of equipment called the transmitter, travel through the air wirelessly, and are then collected by another piece of equipment called the receiver.
It goes something like this. First, you capture sound energy from a recording or a voice, and then convert it into electrical energy. This energy then flows into a tall antenna that boosts the strength of the electric energy. You can control this boosting process depending on how far you want the signal to go from the location of the antenna. The electrons in the electric current become agitated and start moving back and forth to create invisible electromagnetic radiation in the form of radio waves.
These waves then travel at the speed of light to the receiving antenna. This in turn converts the radio waves back into electric current. The sound energy is then decoded from this electric current to grace your ears with the sound of radio music!
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Telecommunications Knowledge
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