r armature, as used by Siemens obtained the same effect by magnetizing himself, in one of his earlier machines, is the stationary electro-magnet by means shown in Fig. 20. of a current, though he deemed the This is, strictly speaking, a magneto- former method preferable. electric machine, as the… … Fig. 20. which constitute such a conspicuous fea- und Dynamo-elektrischen Machinen," and ture of the machine. I therefore simply translate as follows : Dr. Siemens was among the first, if not " We have already drawn attention to the first, to introduce in his machines the fact that when metallic…
Engineering
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