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Updated: May 15, 2025
One of the electrodes is connected with the diaphragm on which the sound-waves impinge, and the vibration of this diaphragm causes the pressure between the electrodes to be correspondingly varied, and thereby effects a variation in the current, resulting in the production of impulses which actuate the receiving magnet.
The reading simply reverses all this. The strip of foil is passed again before the diaphragm, the point of the style follows the groove it made at first, and the diaphragm follows the style in all its motions. The original vibrations are thus exactly reproduced, setting up sound-waves in the air precisely like those which first set the machine in motion.
Once more, those deep-toned vibrations smote upon his ears; now the sound-waves were all about him and the sense of direction was lost; again, and they plainly proceeded from somewhere to the eastward. It was perplexing, but the varying quarter and strength of the wind might be sufficient to account for the difference, and in one curious particular the two observations corresponded.
One of the electrodes is connected with the diaphragm on which the sound-waves impinge, and the vibrations of this diaphragm cause corresponding variations in pressure between the electrodes, and thereby effect similar variations in the current which is passing over the line to the receiving end.
There is a strong movement already on foot to drop reading and writing entirely from the school course, but probably a compromise will be made for the present by substituting a shorthand or phonetic system, based upon the direct interpretation of the sound-waves themselves. This is, of course, the only logical method for the visual interpretation of sound.
But these would not help Professor Bell, the inventor of the telephone we shall describe, since he wanted an ear that would translate the waves of sound into waves of electricity, which would travel farther and faster than sound-waves could. Just when Mr.
Contemplate music from a scientific standpoint that is, merely as a succession of sound-waves, conveyed from the instrument to the ear by pulsations of the atmosphere, or of some other intervening medium. Music is thus reduced to a series of definite vibrations, a certain number of which constitute a note. Each separate note has three distinct properties, or attributes.
The sand forms traced by sound-waves on a musically vibrating steel plate might easily suggest architectural ornament did not the differences of scale and of material tend to confuse the mind. The architect should occupy himself with identities, not differences. All architectural forms and arrangements which give enduring pleasure are in their essence musical.
Three other sirens made to give vocal sounds or articulate speech. A device for projecting sound-waves to a distance without spreading and in a straight line, on the principle of smoke rings. A device for continuously indicating on a galvanometer the depths of the ocean.
Anywhere near the drills is such a roaring and jangling that I must bellow at the top of my voice to be heard at all. The entire gamut of sound-waves surrounds and enfolds me, and with it all the powerful Atlantic breeze sweeps deafeningly through the channel.
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