March 21 2012
1. The telephone is a device that you use to
talk to people from long distances.
2. There were many people who invented the
telephone but Alexander Graham Bell is
the inventor that I am using.
3. The telephone was started in 1844 and
Here is one of the newest phones: the I
ended in 1898. Phone
1. Bell got the idea in Brantford, Ontario. But was
physically created in Boston, Massachusetts.
4. The problem before the telephone was that people
couldn’t talk with people from long distances
very fast. It was made for the people who wanted
Here is a map of Boston
to speak with people from long distances.
5. Humans used the mail, which took a long time, or messenger birds, which also
took a long time.
6. The telephone has four parts. The housing, the hook switch, the dialer, and the
handset. They are all connected by a wire, which is connected to the telephone
network by a wire too. The process of converting sound to electricity and
electricity to sound is in the handset. There are two components the handset:
the microphone and the speaker. The microphone is made from three
components the diaphragm a piece of plastic that has been polarized and
connected by a copper wire to a circuit. The way it works is when you talk
into the microphone the sound waves hit the diaphragm that makes the
diaphragm vibrate which activates the circuit by the copper wire. It then gets
amplified into the wire, which gets sent to the microprocessor. Finally it gets
sent through into the telephone network by the telephone network wire. The
second part of the handset is the speaker is also made of three parts. A magnet
and another diaphragm connected with a copper wire looped around it self
many times. The electricity goes into the wire that magnetizes the wire, which
moves the diaphragm. That makes the diaphragm make sound waves that you
can hear from the other side.
7. Human life has been improved by the telephone so people can talk to people
far away faster and you can hear other people’s voices. It changed lives so
people can get news of your loved ones quickly.
8. 1844: Innocenzo Manzetti got the idea of a speaking telegraph.
1861: Johann Phillip Reis manages to transfer voice electrically over 340 feet.
2nd June 1875: Alexander Graham Bell transmits the voice of a plucked steel
reed using electromagnetic instruments.
10th March 1876: Bell transmits speech saying: “Mr. Watson, come here! I
want to see you!”.
10th August 1876: Bell makes the first long distance call. About 6 miles
between Brantford and Paris, Ontario, Canada.
9th October 1876: Bell makes first two-way long distance call between
Cambridge and Boston, Massachusetts, USA.
19th February 1880: Alexander Graham Bell and Charles Sumner Tainter
invent the photophone also known as the radiophone.
April 1st 1880: World’s first wireless telephone call from the Franklin School
in Washington D.C. to Bell’s laboratory window 213 meters away, on the
25 January 1915: First U.S. coast-to-coast long-distance call by the new
vacuum tube amplifier. Made by Alexander Graham Bell in New York City
to his former assistant Thomas A. Watson in San
1919: First rotary dial telephone installed with a Bell
system in Norfolk, Virginia. Here is a rotary
7th March 1926: First transatlantic telephone call from London to New York.
7th April 1927: From Washington D.C. to New York City.
1935: First telephone call around the world.
1946: First Commercial Mobile Phone call.
1960s: Bell Labs develop Cellular Phones.
9. People will write less and kids will get addicted to the phone and start playing