The talking wire (biography Alexander Graham Bell)

Pocket, uitgave 1947, 126 blz. Kaft en bladranden zijn verkleurd; klein scheurtje in kaft. Verzendkosten (3,65 euro) zijn voor de koper. [B5]

The Talking Wire is the story of een impartant man and his great achievement. Even on the edge of 16, Alexander Graham Bell was inerested in the variation and resonance of sound.He devoted every spare moment of his time working on a theory of 'electric speech.' Finally, at the age of 29, his model for the 'talking wire' was displayed at het Philadelphia Centennial. There, Dom Pedro, the Emperor of Brazil recognized its importance and Bell was started on the road of fame.

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