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Alexander Graham Bell |
Alexander Graham Bell
Scottish Inventor
1847 -1922
Alexander Graham Bell was born on March 3, 1847 in Edinburgh, Scotland. Bell is best known for his invention of the telephone. Many inventors had been working on the idea of sending human speech ... |
Alexander Graham Bell |
Alexander Graham Bell Scottish Inventor 1847 -1922 Alexander Graham Bell was born on March 3, 1847 in Edinburgh, Scotland. Bell is best known for his invention of the telephone. Many inventors had been working on the idea of sending human speech ... |
Bell - Telefonul |
Graham Bell a devenit prima Al. Graham Bell persoana care a brvetat un dispozitiv capabil sa emita si sa receptioneze cuvintele rostite. In transmitatorul sau microfonul lui Bell, undele sonore loveau o diafragma flexibila de ... |
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