re a greater amplitude of vibration in the dia- within the last few months frequent mention of a new of Mexico, it is related, says the Mexican financier, instrument of the phonograph type, invented by phragnr, and to reproduce faithfully all of the over- that certain ignorant people avowed the… … or ventres of the diaphragm, thus avoid- and the terrible inundation came, which ing the points of rest or nodes where VARIOUS DIAPHRAGMS USED IN BETTINI'S MICRO GRAPHOPHONE were interpreted to have been indica- little or no vibration occurs. This instrument, which has been named tions of…
Gas · Patents · Munn · Device · Scientific American · Illustrated · Gas making · Express money · Stepped platform · Rack bar · Oil gas · Jaw head · Electric lighting · Electric light · Engine room
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