ग्राहम बल का टेलीफ़ान का आविष्कार करने की प्रेरणा कस मिली?
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बेल मूक-बधिरों को ट्रेनिंग देने का काम करते थे. इन दोनों के लिए सुनने की मशीन बनाते हुए ही उन्हें टेलीफोन बनाने का आइडिया आया.
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Bell's mother was deaf, and his father and grandfather were famous in England for their work in a field of speech development called elocution. This inspired Bell to study speech and communication as well. At 12 years old, Bell invented a de-husking machine for his friend's family grain mill.
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