Natural Philosophy for the Use of Schools And Academies
Natural Philosophy for the Use of Schools And Academies
J a Joseph Anthony Gillet
The book Natural Philosophy for the Use of Schools And Academies was written by author J a Joseph Anthony Gillet Here you can read free online of Natural Philosophy for the Use of Schools And Academies book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Natural Philosophy for the Use of Schools And Academies a good or bad book?
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With different sub- stances in the receiver, the portion of the spectrum capable of producing au- dible sounds is found to vary greatly, as well as the region of maximum in- tensity of sound. From numerous ex- - periments Graham Bell has arrived at the conclusion that " the nature of the rays that produce sonorous effects in different substances depends upon the nature of the substances that are exposed to the beam, and that the sounds are in every case due to the rays of the spectrum that are ...absorbed by the body" It has been proposed to give the name radiophone to an instrument sen- sitive to all the rays ; and the names thermoplione, photophone, and actino- phoneio instruments especially sensitive to thermal, luminous, and actinic rays respectively. 344. Sounds produced by Vapors. Many vapors have been found to be especially sensitive to the action of the intermittent beam. Tyndall was one of the first to experiment with vapors. He was engaged in a series of experiments *^ upon the absorbent powers of different gases when, as he says, " I became acquainted with the in- genious and original experiments of Mr.
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