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Updated: April 30, 2025
This feeling of singing against the chest with the weight of air pressing up against it is known as "breath support," and in Italian we have even a better word, "apoggio," which is breath prop. The diaphragm in English may be called the bellows of the lungs, but the apoggio is the deep breath regulated by the diaphragm. The attack of the sound must come from the apoggio, or breath prop.
This amounts to saying that the effective time of exposure is equal to n times the diameter 1, the velocity being supposed always uniform. If we place the shutter within the objective, it is the diameter of the diaphragm that it will be necessary to say. The effective time will be equal then to n diaphragm 1.
It was impossible, however, to maintain the devices in adjustment for more than a few seconds, since the invention depended upon the make-and-break principle, the circuit being made and broken every time an impulse-creating sound went through it, causing the movement of the diaphragm on which the sound-waves impinged.
To be sure, we cannot accuse those twin stars that must ever remain the glory of literature and science, Plato and Aristotle, of being materialists. The lowest soul is confined beneath the diaphragm; the one next in rank has its seat in the chest; and the highest, the rational soul, is enthroned in the head.
The voice expresses the whole being and body, and it not only calls for great activity of the central muscles, such as the diaphragm, but every part of the body seems to share in voice conditions. A human being with his legs cut off can never sing or speak as well as he could before he lost them.
A is the mouth-piece; B, the diaphragm; C, the coil; D, the magnet; E, E, the wires. The receiving and sending instruments are precisely alike, each answers for both purposes; but there must be two, since one must always be hearing while the other is speaking. When you speak into the mouth-piece of one telephone, the sound of your voice causes the "diaphragm" to vibrate in front of the magnet.
The result is that with every variation of the current that flows through the coil it moves up and down and pulls and pushes the diaphragm down and up with it. The large amplitude of the vibrations of the latter set up powerful sound waves which can be heard several blocks away from the horn.
He stated that in the Edison telephone, sound was converted directly into electricity without vibrating any diaphragm at all, as attested to by Edison himself.
The heart beats are so violent and tumultuous as to shake the body, and be noticed when standing near the animal. The heart sounds are louder than normal and the pulse beats small and irregular. It may be differentiated from spasm of the diaphragm by determining the relationship of the heart beats to the abrupt shocks observed in the costal and flank regions.
In the practice of the Complete Breath, during inhalation, the diaphragm contracts and exerts a gentle pressure upon the liver, stomach and other organs, which in connection with the rhythm of the lungs acts as a gentle massage of these organs and stimulates their actions, and encourages normal functioning.
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