Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 140
Clappers. SOUND. 117 Fig. II … The Cricket, or l^attlc. together, make a terrific noise, having none of the character-istics of musical sounds. That a musical sound may bemade by a sei-ies of taps isillustrated by the buzz, a toyconsisting oi a disk of tinhaving notched edges andprovided with two holes ondiametrically opposite…
Physics · Lantern projection · Electric apparatus and appliances
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