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753 results
  1. ... the other to the south, is called its polarity; and the two ends of the magnet are ... armature depends upon the adjacent magnet for its polarity, and is always opposite in polarity to the ...
  2. ... other substances, such as bismuth, which also acquire polarity under the influence of a magnetic field, but ... increased thereby "if this current is of equal polarity or in the same direction, and diminished if ...
  3. ... and transmission of heat .... 95 Magnetism....................102 Magnetic polarity ; natural and artificial magnets.......103 Terrestrial magnetism................104 ...
  4. ... or the other of two spe- cies of polarity. This word polarity conveys the idea that two terminations in each ... of a perfect equilibrium. The transfer of different polarities goes beyond the point of reciprocal neutralization, producing ...
  5. ... by the magnet—and that the brain possesses polarity, one side of the head being attract- ed ... that the human body is magnetic, and possesses polarity. Dr. Sherwood, of New York, in a pamphlet ...
  6. ... degree of vigor, as to overcome the vital polarity of the membrane, and over-irritate, by their ... evidently in consequence of their generally powerful vital polarity, and the action of their ciliated epithelium,) and ...
  7. ... has been theoretically ascribed to a kind of polarity of such sort, that each side of a ... be found the other end possesses the same polarity as that point of the magnet with which ...
  8. ... been known from the remotest antiquity; but its polarity with regard to the earth does not appear ... Klaproth, that the Chinese were acquainted with the polarity of the magnet, and employed it as a ...
  9. ... Double Decomposition,................ 100 Complex Affinity,.................................................. 101 ... *10 of ...
  10. NLM Digital Collections - The connection of the physical sciences 
    Publication: Philadelphia : Key and Biddle, 1834
    ... doubted which nation first made use of magnetic polarity to determine positions on the surface of the ... of the most distinguishing marks of magnetism is polarity, or the property a magnet possesses, when freely ...
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