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Alexander Graham Bell was born
Alexander Graham Bell was born in Edinburgh,Scotland. -
Harmonic telegraph
Between 1873 and 1874, bell spent long days and nights trying to perfect the harmonic telegraph. -
Success for Alexander
Through 1874 and 1875, Bell and Watson labored on both the harmonic telegraph and a voice transmitting device.On March 10, 1876, Bell and Watson were successful. -
The telephone
With this success, Alexander Graham Bell began to promote the telephone in a series of public demonstrations.At the Centennial Exhibition in Philadelphia, in 1876, Bell demonstrated the telephone to the Emperor of Brazil, Dom Pedro. -
His death
Bell died peacefully with his wife by his side in Baddeck, Nova Scotia, Canada, on August 2, 1922.