Willson, Robert Wheeler, 1853-1922 · Boston, New York Ginn & company · leaf 26
FlQ. 15 bearing by the declination of the compass, being evidently less thanthe magnetic bearing, if the declination is west of north. It is alsocalled the azimuth of the suns vertical circle, or, briefly, of the sun. … Fig.16 Formerly azimuth was usually reckoned from north through thewest or east, to 180° at the south point. It is now customary tomeasure it from south through west up to 360°, so that the azimuth 14 LABORATORY ASTRONOMY of a body when east of the meridian lies between 180° and 360°.The present…
Astronomy
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