Besides inventing the telephone, Alexander Graham Bell also put in time and effort to discover new things or help people in their invention. As seen from the picture, (from left to right), his other contributions are:
- photophone (transmitting speech on a beam of light)
- tetrahedral kite (capable of carrying human being)
- National Geographic Society
- telegraph
- American Telephone and Telegraph company
- helped to find the Aerial Experiment Association
A video which consists such contributions would be uploaded here soon :)
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