Alexander Graham Bell

Fidel Castro

Alexander Graham Bell

Born 3 March 1847Edinburgh, Scotland. Died 2 August 1922 (aged75) Causeof death Pernicious anemiaBiographyFirst works

Education

First experiments with sound

Prototype model of the telephoneTelephone

The race to the patent office Elisha Grey

Febrary 14, 1876

March 7, 1876

Proof of concept

Elisha Grey, Amos Dolbear

In 18 years, 600 litigationsCompetitorsLater inventionsInterests varied

18 patents and other 12 shared (some planes)

Metal jacket

Audiometer

Locator of icebergs

Alternative fuels

CausesBrake boundaries of international communication.

Faster and more eficient technology than the ones at that moment.

ConsequencesMade communication easier and faster.It was better than other communication gadgets.Made possible the internet through telephone wire, helping internet improving .First advances in sound artifacts.Importance