Phone: The Great Work of Alexander Graham Bell that Inspired Technological Innovation

Deskripsi video : Do you know who invented the phone? How did the phone change the way we communicate? What other technological innovations were inspired by the great work of Alexander Graham Bell? If you want to know the answer, watch this video!

This video will explain the life and achievements of Alexander Graham Bell, a scientist and teacher for the deaf who invented the phone in 1876. You will see how Bell was interested in sound technology because his wife and mother were deaf. You will also learn about other inventions and research that Bell did, such as phonograph, metal detector, and heavier-than-air flight.
This video will give you insight into the development of phones from time to time, from wired phones that use analog system, to wireless phones that use digital system, to smart phones that can send messages, photos, videos, and other data. You will also see how phones affect business, family, and government.
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