Atkinson, Philip. [from old catalog] · New York, The Century co. · leaf 271
Fig. 112. 248 ELECTRICITY FOR EVERYBODY ing the brevity of the exposure; the jewelled ring en-circling the finger, and standing out from the bone, isespecially noticeable, the dense gold casting an intenselyblack shadow. Fig. 113, taken by three minutes exposure, shows ablock of Georgia pine, inch… … Fig. 113. six iron screws and two iron staples were driven. It iscomposed of two pieces, cut across the grain and gluedtogether, the joint being shown in the center. The shad-ing shows with great distinctness the layers of the wood,their relative density, and the greater density of theiron. Fringes…
Electricity
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