Referát: Alexander Graham Bell - biography

Bell, Alexander Graham (1847-1922), American inventor and teacher of the deaf, most famous for his invention of the telephone. Bell was born on March 3, 1847, in Edinburgh, Scotland, and educated at the universities of Edinburgh and London. He immigrated to Canada in 1870 and to the United States in 1871. In the United States he began teaching deaf-mutes, publicizing the system called visible speech. The system, which was developed by his father, the Scottish educator Alexander Melville Bell, shows how the lips, tongue, and throat are used in the articulation of sound.