. Bulletin. Science. Figure 56.—Two views of the Von Hefner- Alteneck dynamo witii drum armature as shown at the Vienna Exhibition of 1873. The armature core {s-si, n-nj) is fixed and the armature windings (coiled on abed) rotate. From J. Dredge, Electric Illumination, Londonj (about 1882), vol. i, p. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Smithsonian Institution; United States. Dept. of the Interior; Un

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. Bulletin. Science. Figure 56.—Two views of the Von Hefner- Alteneck dynamo witii drum armature as shown at the Vienna Exhibition of 1873. The armature core {s-si, n-nj) is fixed and the armature windings (coiled on abed) rotate. From J. Dredge, Electric Illumination, Londonj (about 1882), vol. i, p. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Smithsonian Institution; United States. Dept. of the Interior; United States National Museum. Washington, Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off

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Keywords: ., bookauthorunitedstatesdepto, bookcentury1900, booksubjectscience