Miller, Kempster Blanchard, 1870-1933 · New York : McGraw publishing company · leaf 93
FIG. 55.—THE AHEARN TRANSMITTER. fine dust tending, lo almost entirely fill the interstices between thelarger particles. Probably a more common cause for packing is that a few of thegranules may become wedged between the front and back elec-trodes, thus preventing the vibration of the front…
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