Flame, Electricity And the Camera; Man's Progress From the First Kindling of Fire to the Wireless Telegraph And the Photography of Color

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354.
228 AN INHERITED INTEREST 229 1 86 1 he devised an electrical instrument which transmitted not only music but also vowel sounds, although not in a sufficiently clear and reliable way to be accounted a suc- cess. The goal which Reis so narrowly missed took on a new accessibility when Helmholtz completed his masterly analysis of vowel sounds. With nothing more than a hol- low sphere he resolved a, e, i, o, and u into their constituent musical elements, much as Newton with a simple prism had
...divided a beam of white Hght into its component coloured rays. Armed with a series of tuning-forks, actuated by electricity, he proceeded to prove his analysis true. Unit- ing a series of fundamental tones, he reproduced the vowels with unmistakable clearness.
The possibility that articulate speech flight be committed to an electric wire and recovered from it now plainly pic- tured itself in the imagination of three great inventors — Elisha Gray, Alexander Graham Bell, and Thomas Alva Edison. Inasmuch as Bell, by his fortunate choice of an undulatory current, has given the world the best instru- ment, it may be sufficient to confine attention to the steps by which he arrived at his victory.


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