See also:angle between true
See also:north and magnetic north, i.e. the variation between the true meridian and the magnetic meridian . In 1596 at
See also:London the angle of declination was 11° E. of N., in 1652 magnetic north was true north, in 1815 the magnetic
See also:needle pointed 241° W. of N., in 1891 18° W., in 1896 17° 56' W. and in 1906 17° 45' . The angle is gradually diminishing and the declination will in
See also:time again be o°, when it will slowly increase in an easterly direction, the north magnetic
See also:pole oscillating slowly around the North Pole .
See also:Regular daily changes of declination also occur . Magnetic storms cause irregular variations sometimes of one or two degrees . (See MAGNETISM, TERRESTRIAL.) In astronomy the declination is the angular distance, as seen from the
See also:earth, of a heavenly
See also:body from the
See also:celestial equator, thus corresponding with terrestrial latitude .
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