Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 174
e samegroove, and applying to the mouthpiece a paper funnel orresonator, the sounds or words spoken into the instrumentwill be reproduced. It is even possible to record the soundson a plain strip of wood so that they may be reproduced.The engraving is about two-thirds the actual size of… … W 152 EXPERIMENTAL SCIENCE. remarks were offered. The visitor without any ceremonywhatever turned the crank, and to the astonishment of allpresent the machine said : Good morning. How do youdo? How do you like the phonograph? The machinethus spoke for itself, and made known the fact that it wasthe…
Physics · Lantern projection · Electric apparatus and appliances
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