[The History of the Telephone by Herbert N. Casson]@TWC D-Link book
The History of the Telephone

CHAPTER I
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It was as different from the telegraph as the eloquence of a great orator is from the sign-language of a deaf-mute.
Other inventors had worked from the standpoint of the telegraph; and they never did, and never could, get any better results than signs and symbols.

But Bell worked from the standpoint of the human voice.

He cross-fertilized the two sciences of acoustics and electricity.

His study of "Visible Speech" had trained his mind so that he could mentally SEE the shape of a word as he spoke it.

He knew what a spoken word was, and how it acted upon the air, or the ether, that carried its vibrations from the lips to the ear.


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