"Magnetic compass" Quotes from Famous Books
 ... servant. My baggage was light, consisting chiefly of provisions for two days; a small assortment of beads, amber, and tobacco, for the purchase of a fresh supply, as I proceeded; a few changes of linen and other necessary apparel, an umbrella, a pocket sextant, a magnetic compass, and a thermometer; together with two fowling-pieces, two pair of pistols, and ...
— Life and Travels of Mungo Park in Central Africa • Mungo Park
... services to humanity by their investigations, and Halley's achievements in this respect deserve to be noted. A few years after he had settled in England, he published an important paper on the variation of the magnetic compass, for so the departure of the needle from the true north is termed. This subject had indeed early engaged his attention, and he continued to feel much interest in it up to the end of his life. With respect to his labours in this direction, Sir John Herschel ...
— Great Astronomers • R. S. Ball
... horizon.—Amplitude, in gunnery, is the range or whole distance of a projectile, or the right horizontal line subtending the curvilineal path in which it moved.—Amplitude, in magnetism, is the difference between the rising and setting of the sun from the east and west points, as indicated by the mariner's or magnetic compass—which subtracted from the true amplitude, constitutes the error of the compass, which is the combined effect of variation and ...
— The Sailor's Word-Book • William Henry Smyth
... the instruments without which systematic ocean navigation would have been impossible, the magnetic compass had been introduced into southern Europe and was used by Biscayan and Catalan sailors before the end of the twelfth century.[372] Parties of Crusaders had learned the virtues of the suspended needle from ...
— The Discovery of America Vol. 1 (of 2) - with some account of Ancient America and the Spanish Conquest • John Fiske |
