7. Both Bell's wife, and which other member of his family, were profoundly deaf?
From Quiz Hello, This Is Alexander Graham Bell
Answer:
His mother
This once again, would prove a motivating factor on Bell's work. The research he carried out on hearing and speech would eventually lead him to the invention of the telephone, and he would go on to also become a noted teacher in institutions for the hearing impaired and an instructor of those who taught at these facilities. All his life, Bell was fascinated by the properties of sound. For example, as a child, and interested in acoustics even at that age, he taught himself to play the piano, simply by concentrating intently on the differences in the acoustics of the notes, rather than reading them. He became expert at copying all the different tones of people's voices and would perform amazing voice tricks to delight all who knew him, when the mood was upon him. His father also taught the three boys to concentrate on sounds and the creation of symbols associated with each sound, rather than on visible writing of the words themselves. Bell became so proficient at this method that he occasionally took part in his father's lectures, astonishing audience with his grasp of many languages (including Gaelic and Sanskrit) simply by the use of matching symbols to sounds.