Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 323
the thumb and finger to cause them to adhere, and asquare of the combined sheet thus formed of sufficient sizefor a cell is cut out and pressed upon a glass slide. The Fig. 309. … ^N>^>^^ Making Ihe Wax Cell. slide is then placed upon a turn table, as shown at 3, Fig.309, when, by the dextrous manipulation of an ordinar}penknife, the wax is cut into a circular form, and the cen-ter is cut out to the required depth. If the cell is to con-tain a transparent or…
Physics · Lantern projection · Electric apparatus and appliances
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