 | Industrial arts - 1861 - 460 pages
...Deviations of the Compass by the Length and Arrangement of tlic Coni pass Needles." Mr. Smith said : When the deviations of the compass, caused by the iron of a ship, are corrected by magnets of soft iron, in the way long ago proposed by the Astronomer Royal, the correction... | |
 | Chemistry - 1866 - 642 pages
...number of convenient graphic methods, are given in the "Admiralty Manual for ascertaining and applying the Deviations of the Compass caused by the Iron of a Ship." (London : Potter, 1863.) Practice in the Mercantile Marine. — In the mercantile marine there is no... | |
 | British Association for the Advancement of Science - 1861 - 144 pages
...deviations of the compass by the length and arrangement of thecompass needles." Mr. SMITH said : When the deviations of the compass, caused by the iron of a ship are corrected by magnets of soft iron, in the way long ago proposed by the Astronomer Royal, the correction... | |
 | Mathematics - 1864 - 578 pages
...die Fortschritte der Nautik interessirt. Die Schrift: Admiralty Manual for ascertaining and applying the Deviations of the Compass, caused by the iron of a Ship, by EF Evans, RN, FRS Superintendent of the compass Department of the Admiralty, and Archibald Smith,... | |
 | Chemistry - 1866 - 638 pages
...number of convenient graphic methods, are given in the "Admiralty Manual for ascertaining and applying the Deviations of the Compass caused by the Iron of a Ship." (London : Potter, 1863.) Practice in the Mercantile Marine. — In the mercantile marine there is no... | |
 | Great Britain. Admiralty - 1871 - 424 pages
...When the ship is ready for sea, the observations which are •directed in the Admiralty Instructions for ascertaining the •deviations of the compass caused by the iron of the ship are to be made on board ; and when the ship is swung for this purpose, the deviations of the... | |
 | John Frederick William Herschel, Robert Main - Scientific expeditions - 1871 - 420 pages
...accordingly. When the ship is ready for sea, the observations which are directed in the Admiralty Instructions for ascertaining the •deviations of the compass caused by the iron of the ship are to be made on board ; and when the ship is swung for this purpose, the deviations of the... | |
 | Bernhard von Poten - Military art and science - 1877 - 514 pages
...aufgehoben werden kann. — Airy, a treatise on magnetism; Admiralty Manual for ascertaining and applying the Deviations of the compass, caused by the iron of a ship by EF Evans and A. Smith. St. Aucklandsinseln: eine Inselgruppe, 240 Seemeilen sdl. von Neuseeland,... | |
 | Institution of Civil Engineers (Great Britain). Library - Engineering - 1904 - 440 pages
...Iron Ships. AIRY, Sir GB 1865, p. 17. Various ways in which it affects the Compass. LYONS, 1884. Rules for ascertaining the Deviations of the Compass caused by the iron of a ship. ANONYMOUS, 1852, 1855, p. 52. Johnson and the Mariner's Compass. JOHNSON (Capt. EJ), 1848. App. 563.... | |
 | Royal Institution of Great Britain - Science - 1866 - 742 pages
...number of convenient graphic methods, are given in the ' Admiralty Manual for ascertaining and applying the Deviations of the Compass caused by the Iron of a Ship.' (London: Potter, 1863.) Practice in the Mercantile Marine. In the mercantile marine there is no regular... | |
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... and if the amount is large, the heeling error is corrected by the application of a vertical magnet. The whole process is described, and all the mathematical formula and arithmetical processes, and a number of convenient graphic methods, are given... 