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I.C.S. reference library : a series of textbooks prepared for the students of the International Correspondence Schools and containing in permanent form the instruction papers examination questions, and keys used in their various courses (1904)

International Correspondence Schools · Scranton : International Textbook Co. · leaf 397

An illustration from I.C.S. reference library : a series of textbooks prepared for the students of the International Correspondence Schools and containing in permanent form the instruction papers examination questions, and keys used in their various courses, 1904, leaf 397 — Fig. 14. Fk;. 1.-). those opposing, and form a resultant field in which thedirection of the lines of force will depend upon the relativestrengths of the two opposing negative fields. The result-ing poles thus formed are called consequent poles. In every magnetic field there are certain stresses…

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