Journal - Franklin Institute of the State of Pennsylvania (1826)
Franklin Institute, Philadelphia, Franklin Institute (Philadelphia, Pa.) · [Philadelphia : Franklin Institute] · leaf 245
121 … Pirate XIII.—Dieckmanns dynamotor. 1894. appear to be largely completed through the field magnetsB, but a portion of the induced field must pass through thesecondary armature ring F. This ring is removed fromthe magnetic field created by the pole-pieces, and induc-tively influenced by the…
Science · Technology · Meteorology · Patents
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