Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 679
- otherobject. In Fig. 630 is represented a device bv which the figures are Fig. 631, v&/ _ /^,^^ … 4 b Sand Ficjures. formed in the lantern and projected entire. The apparatusis similar to that shown in Fig. 629. Several small holes aremade in the plate along the edge to receive a hook attachedto a strong smooth cord. The cord is held in the mannerindicated and rubbed with resined fingers. This…
Physics · Lantern projection · Electric apparatus and appliances
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