Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 179
produce inden-tations which correspond to the movements of the dia-phragm. After the record is made, the carriage is again 156 EXPERIMENTAL SCIENCE. returned to the point of starting, the receiving diaphragmis replaced b)- the reproducing diaphragm, and the carriageis again moved forward by the… … Phonographic Record Magnified.Fig. 159. Fig. 160,
Physics · Lantern projection · Electric apparatus and appliances
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