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Updated: May 28, 2025
From points near the circumference these circles or curves are very small. To illustrate this to you, the reverser now in circuit with spiral C will be replaced by a simple make and break arrangement, consisting on a small electro-magnet fixed between the prongs of a tuning-fork, and so connected that electro-magnet influences the arms of the fork, causing them to vibrate to a certain pitch.
His aim was to point out the physical basis of music, and nothing more. But this fact that an electro-magnet would set a tuning-fork humming was new to Bell and very attractive. It appealed at once to him as a student of speech.
When John "Aleck," a handsome, broad-shouldered, six-footer, stood up and bit his tuning-fork to catch the pitch, the people straightened up in their seats and prepared to follow his lead. And after his great resonant voice had rolled out the first few notes of the tune, they caught him up with a vigor and enthusiasm that carried him along, and inspired him to his mightiest efforts.
Let ten or fifteen ohms of any convenient-sized wire be wound upon the bend of a commercial U-magnet. Let this wire be connected to a telephone in its circuit. When the magnet is made to sound like a tuning-fork, the pitch will be reproduced in the telephone very loudly.
For just as a tuning-fork responds to sound-waves of its own pitch, but remains indifferent to those of any other, so those particles of matter whose nature it is, when set swinging by heat, to vibrate a certain number of times in a second, thus giving rise to light of a particular shade of colour, appropriate those same vibrations, and those only, when transmitted past them, or, phrasing it otherwise, are opaque to them, and transparent to all others.
I dare say I could make something of you. I can see at a glance that you eat, drink, and smoke too much. You could not hold out your hand now, at this minute, without it trembling." "I could," said Mr. Penway indignantly. He held it out, and it quivered like a tuning-fork. "There!" said Mrs. Porter calmly. "What do you expect?
The apparatus is placed in a distant room to prevent the sound being heard here, as I wish to make it inductively audible to you. For that purpose I have here a light spiral which is in circuit with this telephone. Now, by placing the spiral in front of spiral C, the telephone reproduces the sound given out by the tuning-fork so loudly that I have no doubt all of you can hear it.
The United Presbyterians disunited from the main body by abjuring all music but that of the human voice, and then they split as to the propriety of using a tuning-fork. The Baptists have always played the organ, but the cornet as an instrument to be used in leading congregational singing has caused much dispute and contention.
In this work certain prominent subjects have been selected with which it behoves every one to be acquainted: such, for example, as relate to what may be called our HOUSEHOLD INSTRUMENTS, namely, the Thermometer, the Barometer, and Vernier; the Hydrometer, the Hygrometer; the Tuning-Fork, Musical Glasses and Music generally; the Compass; the Prism, the Telescope, and the Sun-Dial.
Spurgeon reading out verse by verse, with occasional commentary, and not unfrequent directions to the congregation as to the manner of their singing. "Dear friends, the devil sometimes makes you lag half a note behind the leader. Just try if you can't prevail over him to-night, and keep up in proper time." There is no organ, nor even a tuning-fork, in use at the Tabernacle.
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