New electro-magnet
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C.
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Article
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1880
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Elsevier Science
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English
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~',43 ]~.t'j~'~'i~I~.~!t~Ls ~2~o~ ]~(ti[,'~. [gour. Frank. Inst., New Eleetro-Magnet.--C%tmbrier increases the power of electro-magnets by augmenting the-extent of active surface at the extremity โข ,,f the core and o~' the oscillating armature. He indicates various ways of doing this, which are all