How do you make a phone call?
Telephones are made by assembling many parts in a factory. Let us explain just the important parts.
First of all, a telephone has two parts: the part that sends your voice and the part that receives your voice. The transmitter is called a mouthpiece, which converts the voice into an electric current. The one that hears the voice is called the receiver, which converts the electric current into voice.
The transmitter is made of a thin steel plate, carbon particles, and electromagnets. The one that listens to the voice contains a thin steel plate, an electromagnet, and an ordinary magnet.
In addition, there is a dial or push-button that sends the telephone number to the exchange.
These dials and push buttons are connected to a machine that converts the numbers into electrical signals and transmits them. The telephone also has a bell to indicate that a call has come in. A telephone is made up of approximately the above components.
For your home
In 1876, Bell invented the telephone in the United States. In Japan, long-distance telephone service between Tokyo, Osaka, and Kobe began in 1899.
