The History of the Phone

Group 14a0c0118 Linda 陳雯琪4a0c0125 Mo 鄭琇文4a0c0116 Victoria 王鈺潔

Vocabulary-definition

in the vicinity of- in the area around particular place

transmission-sending or passing from one person, place, or thing to another

via- going or sending something through something else “I talked to him via the internet”

Vocabulary-definition

cables- a plastic or rubber tube containing wires that carry telephone messages, electronic signals, television pictures etc.

simultaneously- happen at exactly the same time

audible- you can hear it

Vocabulary-definition

patented- a special document that gives you the right to make or sell a new invention or product that no one else is allowed to copy

vibration-a continuous slight shaking movement

History of phone A telephone, or phone, is

a telecommunications device that permits two or more users to conduct a conversation when they are not in the same vicinity of each other to be heard directly. A telephone converts sound, typically and most efficiently the human voice, into electronic signals suitable for transmission via cables or other transmission media over long distances, and replays such signals simultaneously in audible form to its user. The word telephone has been adapted into the vocabulary of many languages. It is derived from the Greek: τῆλε, tēle, "far" and φωνή, phōnē, "voice", together meaning "distant voice".

History of phone

First patented in 1876 by Alexander Graham Bell and further developed by many others, the telephone was the first device in history that enabled people to talk directly with each other across large distances. Telephones rapidly became indispensable to businesses, government, and households, and are today some of the most widely used small appliances.

History of phone

http://www.youtube.com/watch?v=xdIXoceFgk8

Theory of phone

When we speak against the side of the cups, sound waves will shake bottom of the cup. The vibrations transmit to the bottom of another cup via a string. The bottom of the cup shakes air, producing the same sound waves. When our eardrum vibrates then we can hear each other's voice.

This proves that sound can be transmitted by vibrating air. You need to make sure the rope is tense or the sound waves won’t be transmitted.

Evolution of phone

In 1896

Evolution of phone

Early 1990

Evolution of phone

In 1946

Evolution of phone

In 1985

Evolution of phone

In 2000

Evolution of phone

In 2000s

Evolution of phone

Video

http://www.youtube.com/watch?v=qWUP9EigdjY

http://www.youtube.com/watch?v=OD8OcPGScRU

Materials of making homemade phone

Two cups About 1 meter long cotton Two paper clips A pen and scissors

Materials of making homemade phone

Step production: Drill holes in the bottom of the

cups Thread the cotton between caps Fasten paperclip on cotton of the

cup’s bottom Tie the cotton