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 565
... pole- star governed the magnet , then ' that it influenced moun- tains which in turn controlled the lodestone ; but Pere- grinus indicated the Earth as the controlling power . Before Peregrinus ' time , the needle was not in constant ...
... pole- star governed the magnet , then ' that it influenced moun- tains which in turn controlled the lodestone ; but Pere- grinus indicated the Earth as the controlling power . Before Peregrinus ' time , the needle was not in constant ...
Page 566
... pole of the heavens , and the south pole in that of the south pole of the heavens , by the will of God . ” In those days the astrolabe was in general use : it consisted of a circle graduated to degrees , provided with cross - arms ...
... pole of the heavens , and the south pole in that of the south pole of the heavens , by the will of God . ” In those days the astrolabe was in general use : it consisted of a circle graduated to degrees , provided with cross - arms ...
Page 568
... ; No useful compass or meridian known- Coasting , they kept the land within their ken , And knew no north but when the pole star shone . " -Dryden . CHAPTER XIV . MANUFACTURE OF THE COMPASS . Section One 568 HISTORICAL SKETCH .
... ; No useful compass or meridian known- Coasting , they kept the land within their ken , And knew no north but when the pole star shone . " -Dryden . CHAPTER XIV . MANUFACTURE OF THE COMPASS . Section One 568 HISTORICAL SKETCH .
Page 573
... poles of an electromagnet , as at G , Fig . 357 , Vol . I ; the current is a direct one , from a dynamo , and the wires are converted into strong magnets . Other methods of using the current have been found . very efficacious - that ...
... poles of an electromagnet , as at G , Fig . 357 , Vol . I ; the current is a direct one , from a dynamo , and the wires are converted into strong magnets . Other methods of using the current have been found . very efficacious - that ...
Page 575
... poles , heats the steel , which opposes magnetization . Magnetizing the needles is the most important step toward producing a good compass : if they are strong they ... pole , though in reality it PRINCIPLES OF MAGNETISM AND MECHANICS . 575.
... poles , heats the steel , which opposes magnetization . Magnetizing the needles is the most important step toward producing a good compass : if they are strong they ... pole , though in reality it PRINCIPLES OF MAGNETISM AND MECHANICS . 575.
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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