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 581
... represented by AF and the resultant force of ns - either a push or a pull according to the pole presented — by n'F ... represent the relative strength of the needles . But the angle E is slightly acute and F correspond- ingly obtuse ...
... represented by AF and the resultant force of ns - either a push or a pull according to the pole presented — by n'F ... represent the relative strength of the needles . But the angle E is slightly acute and F correspond- ingly obtuse ...
Page 597
... represents the destructive effect - about 3'.4 per wire . Of the 32 wires , only four - f , o , u , z - show individual weakness ; while in the combination , the 6th , 15th , 26th , 28th , and 32d added less than the average increment ...
... represents the destructive effect - about 3'.4 per wire . Of the 32 wires , only four - f , o , u , z - show individual weakness ; while in the combination , the 6th , 15th , 26th , 28th , and 32d added less than the average increment ...
Page 618
... represent the moment of inertia : the length here is denoted by r and in Fig . 386 by 1 , so that l in eq . ( 32 ) stands for one of the two quantities that change the period of oscillation , the other being the force represented by g ...
... represent the moment of inertia : the length here is denoted by r and in Fig . 386 by 1 , so that l in eq . ( 32 ) stands for one of the two quantities that change the period of oscillation , the other being the force represented by g ...
Page 620
... whole bar , - fdm.p2 = fdm.r2 - f2dm.h.x + fdm.h2 . ( 45 ) • The origin of coordinates being at the center of gravity , x = 0 , whence f2dm.h.x = 0 ,. ( 46 ) and ( 45 ) becomes , by making K represent 620 MANUFACTURE OF THE COMPASS .
... whole bar , - fdm.p2 = fdm.r2 - f2dm.h.x + fdm.h2 . ( 45 ) • The origin of coordinates being at the center of gravity , x = 0 , whence f2dm.h.x = 0 ,. ( 46 ) and ( 45 ) becomes , by making K represent 620 MANUFACTURE OF THE COMPASS .
Page 621
... represent , in general , the moment of inertia , K = fdm.p2 = fdm .r2 + fdm.h2 . ( 47 ) fdm.p2 is the moment of inertia about the axis Z'B , and Jdm.r that about ZA : hence from ( 47 ) the moment of inertia about any axis ( ZP ) is ...
... represent , in general , the moment of inertia , K = fdm.p2 = fdm .r2 + fdm.h2 . ( 47 ) fdm.p2 is the moment of inertia about the axis Z'B , and Jdm.r that about ZA : hence from ( 47 ) the moment of inertia about any axis ( ZP ) is ...
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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