nches to four. The Some recent experiments in the Jefferson Physical Construction Company. The transformer I have de- deafening noise was probably caused by the explosion Laboratory show in a striking manner that the as- scribed was excited by six amperes, and gave a spark of the hydrogen and… … has several interesting features. Fig. 1.—The Transformer. It consisted in the main of nineteen AN OPTICAL PYROMETER. In our various industries, accurate flat bobbins of fine wire slipped upon a means are provided for determining the different pro- used. Fig. 1 is a photograph of the laminated iron…
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