In the present. People can communicate more easily, have a State-of-the-art medical equipment,Equipment and facilities, These things are caused by bringing scientific knowledge applied, such as sound waves, is the principle, the phone will change as the radio waves radio waves. Electromagnetic radiation) this wave will dissipate in the air and to the station of mobile radio. When someone calls come in waves as radio waves. Submitted by the recipient and sent to the station.
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