单词 | magnetic declination |
例句 | He has further applied the method to the study of the variations of the magnetic declination, and of sun-spot records. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 8 "Haller, Albrecht" to "Harmonium" 2012-01-02T03:00:22.443Z With us the magnetic declination is a minimum at about eight o’clock in the morning, and is greatest at two o’clock in the afternoon. The Philosophy of the Weather And a Guide to Its Changes If there is a true meridian on the map, but not a magnetic meridian, one may be constructed as follows, if the magnetic declination is known: Fig. Manual of Military Training Second, Revised Edition Now, here is what we know with most certainty as to the magnetic declination of Paris at the epoch in question: Years. Scientific American Supplement, No. 810, July 11, 1891 Men were invited to believe that a subterranean freely-rotating nucleus occasions by its position the diurnal and annual changes of magnetic declination. COSMOS: A Sketch of the Physical Description of the Universe, Vol. 1 This can be approximately obtained by a good compass, and allowance made for the magnetic declination at your own place. The Boy Mechanic: Volume 1 700 Things for Boys to Do There was nothing to do but use the three-inch theodolite, which, setting to one degree, would give a good result, with a mean of thirty-two settings, for a region with such variable magnetic declination. The Home of the Blizzard Being the Story of the Australasian Antarctic Expedition, 1911-1914 While Murphy and Laseron went back two miles to recover them, Webb secured a magnetic declination and I took sun observations for time and azimuth. The Home of the Blizzard Being the Story of the Australasian Antarctic Expedition, 1911-1914 Webb at once proceeded to take full magnetic declination, time and azimuth observations, Laseron recording for him. The Home of the Blizzard Being the Story of the Australasian Antarctic Expedition, 1911-1914 A time-shot was successful, and observations were also taken for magnetic declination. The Home of the Blizzard Being the Story of the Australasian Antarctic Expedition, 1911-1914 |
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