Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 168
or. E.xperiment with the Jews Harp respond only to the grave note of the bell, while the shal-lower cavity will re-enforce only the overtone to which it istuned. In this experiment it will be found a little moreconvenient to have separate resonators for the differenttones. In Fig. 152 is shown an… … 145 Bell and Resonator.Fig 152.
Physics · Lantern projection · Electric apparatus and appliances
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