A Treatise on Electromagnetic Phenomena, and on the Compass and Its Deviations Aboard Ship: Mathematical, Theoretical, and Practical, Volume 2J. Wiley & Sons, 1903 - Compass |
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Page 591
... side by side , and testing each bundle in the torsion balance . The first line shows the number of plates in combi- nation ; and the second , the torsion required to deflect the bundle 30 ° from the meridian . If the power were ...
... side by side , and testing each bundle in the torsion balance . The first line shows the number of plates in combi- nation ; and the second , the torsion required to deflect the bundle 30 ° from the meridian . If the power were ...
Page 593
... side with the other . They were then numbered , each tested at one length from the deflected needle , and a record made of the deflections ; these varied between 15 ° and 18 ° . Next , the plates were magnetized anew and tried as ...
... side with the other . They were then numbered , each tested at one length from the deflected needle , and a record made of the deflections ; these varied between 15 ° and 18 ° . Next , the plates were magnetized anew and tried as ...
Page 610
... side , and con- tinue to oscillate until friction with the air brings it to rest in the vertical position . At every point of the arc ACZ the force of gravity g acts vertically ; resolving it in the direction of the wire F B R 22 ...
... side , and con- tinue to oscillate until friction with the air brings it to rest in the vertical position . At every point of the arc ACZ the force of gravity g acts vertically ; resolving it in the direction of the wire F B R 22 ...
Page 625
... side , so as to build up a symmetrical bar of any width ; then the cross - section will no longer be a line , but have width as well as depth ; denote this width by b : as , in the case of the single blade , the integration was effected ...
... side , so as to build up a symmetrical bar of any width ; then the cross - section will no longer be a line , but have width as well as depth ; denote this width by b : as , in the case of the single blade , the integration was effected ...
Page 639
... side of the central diameter , are equivalent , as regards symmetry of position and equality of moment of inertia , to two chords , one at 30 ° on each side - that is to say , the same weight distributed among four needles or divided ...
... side of the central diameter , are equivalent , as regards symmetry of position and equality of moment of inertia , to two chords , one at 30 ° on each side - that is to say , the same weight distributed among four needles or divided ...
Other editions - View all
A Treatise on Electromagnetic Phenomena, and on the Compass and ..., Volume 1 Timothy Augustine Lyons No preview available - 2018 |
A Treatise on Electromagnetic Phenomena, and on the Compass and Its ... Timothy Augustine Lyons No preview available - 2015 |
Common terms and phrases
angle axis azimuth Bearing of True binnacle brass center of gravity circle coefficients cols compass course compensating component cos² cosine D.sin deflected needle Deviations Produced diameter dip circle distance disturbing dygogram Earth east effect equal equations error ether waves experiments formula four needles heeling hence horizontal inches induced inertia keel length Line on Wall magnetic course magnetic force magnetic moment mass maxima and minima means method moment of inertia motion netic observations obtained oscillation period of oscillation permanent magnetism pivot placed plane plates polarity pole quantities radius represent S₁ S₂ second member semicircle semicircular sextantal ship swings ship's head side sin² sine soft iron south pole starboard steel magnet strength Substituting swung tion True Meridian Line tube varied versin vertical whence wire ΙΟ
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