Speech of deaf mutes

• Book ID: 103089924
• Publisher: Elsevier Science
• Year: 1882
• Tongue: English
• Weight: 59 KB
• Volume: 113
• Category: Article
• ISSN: 0016-0032
• DOI: 10.1016/0016-0032(82)90275-7

✦ Synopsis

I;7

Diffusion of Electric Light.--M. Clemaudot was induced, by observing the diffusion of the solar light by clouds, to experilueut with mineral wool, or spun slag, in connection with the electric ace, and found that it seemed to absorb the light like "t sponge, so as ¢o make from 75 to 80 per cent. available for illumination while the ordinary processes utilize only from 45 to 50 per cent. at the most.--La 5future.

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