These end-organs are the active agents in taking up foreign granules, or bacteria, which may have found their way into the fluid of the body-cavity.
When spoken to the diaphragm vibrated, and thus set the carbon granules into vigorous vibration.
The chief difficulty with this transmitter, and with various others of later date based upon it, has been the frequent packing of the carbon granules, which renders the instrument inoperative.
The disks and granules constitute a very powerful microphone.
The motions impressed upon the carbon granules are very vigorous, and this together with the particular arrangement of the parts of the instrument is effectual in obviating the difficulty from packing which attended the use of earlier forms of granulated carbon transmitters.
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