A Treatise on Magnetism Designed for the Use of Students in the University |
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Page xi
... reversion is equal to that before reversion ; simplification when the needle is very nearly balanced 39. Mathematical theory of the Dipping Needle continued ; secondly , on the supposition that the intensity is not the same after ...
... reversion is equal to that before reversion ; simplification when the needle is very nearly balanced 39. Mathematical theory of the Dipping Needle continued ; secondly , on the supposition that the intensity is not the same after ...
Page xiv
... Reversion or destruction of the magnetism . Origin of the term " Subpermanent . " 168 169 . 171 SECTION X , ON THE MAGNETISM OF IRON SHIPS , AS AFFECTING THEIR COMPASSES . Articles 78-82 . Pages 173-188 . 78. Philosophical and ...
... Reversion or destruction of the magnetism . Origin of the term " Subpermanent . " 168 169 . 171 SECTION X , ON THE MAGNETISM OF IRON SHIPS , AS AFFECTING THEIR COMPASSES . Articles 78-82 . Pages 173-188 . 78. Philosophical and ...
Page 81
... reversion of its pivot - bearing : rotation round its vertical axis : re- versal of its magnetic poles . The point to which the theoretical considerations , employed in the use of the dipping - needle , are particu- larly addressed , is ...
... reversion of its pivot - bearing : rotation round its vertical axis : re- versal of its magnetic poles . The point to which the theoretical considerations , employed in the use of the dipping - needle , are particu- larly addressed , is ...
Page 83
... reversion , as is ascertained by calculations to be mentioned below . 38. Mathematical theory of the Dipping - Needle : first , on the supposition that the magnetic intensity after reversion is equal to that before reversion ...
... reversion , as is ascertained by calculations to be mentioned below . 38. Mathematical theory of the Dipping - Needle : first , on the supposition that the magnetic intensity after reversion is equal to that before reversion ...
Page 84
... reversion of the poles . ( This amounts to the same as supposing that the mag- netic intensity after reversion is to that before reversion as n to 1. ) Let a be the distance of each of the poles from the center . Our object now is to ...
... reversion of the poles . ( This amounts to the same as supposing that the mag- netic intensity after reversion is to that before reversion as n to 1. ) Let a be the distance of each of the poles from the center . Our object now is to ...
Contents
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Common terms and phrases
angle angular momentum Astronomical Meridian attraction axis azimuth blue end blue magnetism blue pole broadside-on C₁ Cambridge cloth College compass compass-needle cotan Crown 8vo curves deflexion deviation direction distance disturbed needle disturbing magnet Edition effect elementary end-on equal equations error experiment expression fcap Figure formulæ Greenwich horizontal action horizontal plane investigations latitude Law of Magnetism longitude magnet-power Magnetic Declination magnetic force magnetic meridian Magnetic Pole mass of iron measured moment of inertia netism North Magnetic Pole numerical value observations obtained opposite position produced proportion red end red magnetism red pole remarked represented repulsion rotation Royal Observatory sensibly ship ship's head statical force exerted steel magnet supposed suspension-thread term terrestrial horizontal force terrestrial magnetism theodolite theory tion torsion-power total force treatise vertical force vibration wire
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