Upon the Production of Sound By Radiant Energy
Upon the Production of Sound By Radiant Energy
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In our eReader you can find the full English version of the book. Read Upon the Production of Sound By Radiant Energy Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Upon the Production of Sound By Radiant Energy
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12 the converse process takes place. The lamp-black particles cool and contract, thus enlarging the air spaces among them, and the enclosed air also becomes cool. Under these circum- stances a partial vacuum should be formed among the particles, and the outside air would then be absorbed, as water is by a sponge when the pressure of the hand is removed.
I imagine that in some such manner as this a wave of con- densation is started in the atmosphere each time a beam of sun- light falls upon lamp...-black, and a wave of rarefaction is origi- nated when the light is cut off. We can thus understand how it is that a substance like lamp-black produces intense sonorous vibrations in the surrounding air, while at the same time it communicates a very feeble vibration to the diaphragm or solid bed 'upon which it rests.
This curious fact was independently observed in England by Mr. Preece, and it led him to question whether, in our experi- ments with thin diaphragms, the sound heard was due to the vibration of the disk or (as Prof.
What to read after Upon the Production of Sound By Radiant Energy?
You can find similar books in the "Read Also" column, or choose other free books by Alexander Graham Bell to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
12 the converse process takes place. The lamp-black particles cool and contract, thus enlarging the air spaces among them, and the enclosed air also becomes cool. Under these circum- stances a partial vacuum should be formed among the particles, and the outside air would then be absorbed, as water is by a sponge when the pressure of the hand is removed.
I imagine that in some such manner as this a wave of con- densation is started in the atmosphere each time a beam of sun- light falls upon lamp...-black, and a wave of rarefaction is origi- nated when the light is cut off. We can thus understand how it is that a substance like lamp-black produces intense sonorous vibrations in the surrounding air, while at the same time it communicates a very feeble vibration to the diaphragm or solid bed 'upon which it rests.
This curious fact was independently observed in England by Mr. Preece, and it led him to question whether, in our experi- ments with thin diaphragms, the sound heard was due to the vibration of the disk or (as Prof.
What to read after Upon the Production of Sound By Radiant Energy?
You can find similar books in the "Read Also" column, or choose other free books by Alexander Graham Bell to read onlineMoreLess
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