Daf first tellephone picture.jpg
The first telephone

The Start
On March 3rd, 1847, Alexander Graham Bell was born in Edinburgh, Scotland. In the fall of 1865, Bell starts his serious work on the science of speech production at. This started at Weston house Academy in Elgin, Scotland. Five year later, Bell immigrated to Canada, and the very next year he started to teach the deaf here in the United States. This was the start of his life in America.
Inventing the Telephone
Over the next few years, Bell started working on and perfecting the Harmonic Telegraph. On the date of March 1st, 1875 Bell takes his invention to the office of 78-year-old Joseph Henry. Joseph was not very interested in the invention that was brought to his office. But when Bell started to talk about an electrical interference he had noticed in his work, Joseph shot up like a start. When he shot an electrical current through an insulated copper wire and interrupted the current at intervals he here a sound coming from the spiraling cords. After a long year of working on the speech production, Bell and his assistant Watson had finally perfected the telephone. During that year, Bell had tested the telephone by having Watson go into a room with a receiver will he was in another room with the telephone. Bell said into the speaker, “Watson come here, I want to see you.” And seconds later Watson arrived in the room and said he could understand what he was saying. Bell then showed his invention to the world and started the existence of the telephone. The telephone later evolved into the cellular phone or cell phone.
DAF first telephone diagrame.jpg
Bell spoke into the telephone, "Watson, come here, I want to see you." In seconds, watson arrived.
The Start of Something New
7 years after the invention of the telephone, President Garfield was shot. His doctors could not find the bullet within his body, and with no X-rays it was very difficult. After much gossip and press reports, someone mentioned that we should use a device to detect the metal bullet. Alexander Graham Bell read this article. He had a challenge, to build the first metal detector. He started at work with his assistant Watson. After days of work, Bell had arrived at the White House with his metal detector. He entered the Presidents room to test his invention. He tightened the copper cords that wrapped around his detector. He started at work finding the bullet. He searched and searched, but he could not find the bullet. He returned home embarrassed.
He Finds the Solution
He finds that he incorrectly wired one wire. He works on improving the detector and to do it, he had solider arrive at his house with bullets still in his body. He used his new and improved detector to find the bullet in them, it worked. He returned to the White House to find the bullet. He searched around and heard clicking all over. He moved the detector to one end of the bed to the other. He could not find the exact location of the bullet. He returned home embarrassed again.
Our Great Leader Dies
After 80 painful days, President Garfield died from infection. Doctors could never find the bullet. It was the second American President assassination ever.
After the president died, Bell investigated the bed that the president was sleeping on. Under the traditional horse hair mattress was a new metal spring mattress. This metal spring mattress was interfering the detector. He could always hear the clicking because he was always detecting metal, but not the bullet.

In the End
The metal detector ended up saving many lives. It evolved in to the common metal detector and the mine detector, which saved many from hidden bombs underground. Alexander Graham Bell was a very large help in safety and communication. He evolved the entire world of communication. He is one of the most important inventers ever. He dies August 2nd, 1922.

  • http://streaming.discoveryeducation.com/student_index.cfm
  • The Editors of Salem Press Great Scientific Achievements, the Twentieth Century. California: Salem Press, Inc. 1994. Print
  • Pasachoff, Naomi E. Alexander Graham Bell: Making Connections. New York: Oxford University Press, 1996. Print