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 560
... turned the little figure into the meridian , thus point- ing out its direction . Du Halde , who was a missionary in China and wrote a history of the country from data procured from Chinese books , states that " about the year 2634 B.C. ...
... turned the little figure into the meridian , thus point- ing out its direction . Du Halde , who was a missionary in China and wrote a history of the country from data procured from Chinese books , states that " about the year 2634 B.C. ...
Page 567
... turned on its center so as to be directed toward the sun or heavenly bodies , and in this way , of course , the azimuth is easily measured . " - ( The Intellectual Rise in Electricity . ) Peregrinus himself says of this instrument ...
... turned on its center so as to be directed toward the sun or heavenly bodies , and in this way , of course , the azimuth is easily measured . " - ( The Intellectual Rise in Electricity . ) Peregrinus himself says of this instrument ...
Page 574
... turned all one way - and that the neutral state results from their indiscriminate mixture . Both tempering and magnetizing give a violent wrench to the molecules of a mass of steel - the former may be said to fix them as a rigid ...
... turned all one way - and that the neutral state results from their indiscriminate mixture . Both tempering and magnetizing give a violent wrench to the molecules of a mass of steel - the former may be said to fix them as a rigid ...
Page 576
... turned into the magnetic meridian - previously found with the magnet NS sus- pended . The copper bar is now replaced by a needle : it settles into the magnetic meridian , and to deflect it to any angle 0 , the circle B must be turned in ...
... turned into the magnetic meridian - previously found with the magnet NS sus- pended . The copper bar is now replaced by a needle : it settles into the magnetic meridian , and to deflect it to any angle 0 , the circle B must be turned in ...
Page 580
... turned end for end and the deflection again noted and recorded ; the mean of both angles is taken , and the tan- T K M ' R F E R K T FIG . 375 . gent of this mean deflection is an index of the needle's strength compared with others ...
... turned end for end and the deflection again noted and recorded ; the mean of both angles is taken , and the tan- T K M ' R F E R K T FIG . 375 . gent of this mean deflection is an index of the needle's strength compared with others ...
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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