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Alexander Graham Bell

By 626378
  • Alexander Graham Bell was born

    Alexander Graham Bell was born

    Alexander Graham Bell was born in Edinburgh,Scotland.
  • Harmonic telegraph

    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

    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.