-
Period: to
Decade Dates
-
First Principle of the Telephone
Alexander Bell discovers the first principle of the telephone. The prinicple was that if a message is spoken at one end it produces impulses which reproduce the message to the one listening. January 1rst was not the actual date. -
First Telephone Call
Alexander Graham Bell made the first telephone call to Thomas Watson. This took place on March, 10, 1876. -
The Electro- Motograph
In 1877 Thomas Edison revieved the patent in Britain for the electro-motograph. His carbon-based transmitter is still used today in telephones. January 1rst was not the actual date. -
The Bell Telephone Company
In 1887 Gardiner Hubbard formed the Bell Telephone Company. They made phones under the direction of Thomas Watson. January rst was not the actual date. -
The telephone exchange
In 1878 Tivadar Puska's made the first telephone exchange. This allowed subscribers to get on the same line as another subscrber because of a human operator that switched the lines. January 1rst was not the actual date. -
The Phonograph
On November 21, 1878 Thomas Edison annouced his invention the phonograph. It was a device for recording and replaying sound. -
The Pay Telephone
In 1880 WIlliam Gray installed the first pay telephone. You could insert money and call someone. January 1rst was not the actual date. -
The Edison Effect
In 1883 Thomas Edison discovered the flow of electronic in a vacuum. This vacuum was called the Edison effect, the foundation of the electronic tube. January 1rst was not the actual date.
