By 42beast, Updated
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Today we will learn how sound travels from phone to phone.
First you talk into the microphone.
Your voice then gets converted into electrical signals.
The electrical signals are turned into radio waves which are sent to the cell tower.
The cell tower sends radio waves to caller "B"s phone and turns them into electrical signals then they get turned into sound waves that go to the earpeice and caller "B" receives the call.
Now callers "A" & "B" can continue to communicate using the process.
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