A high-school astronomy: in which the descriptive, physical, and practical are combined .. (1853)
Mattison, Hiram, 1811-1868 · New York, F. J. Huntingdon [etc.] · leaf 155
describe a curve,which is convex to the south, as shown at A. In June, they cross the suns disk innearly straight lines, but incline upward. In September, they curve again, though inthe opposite direction; and in December, pass over in straight lines, inclining down-ward. The figures B and D show… … OUNEi MARCH Let the student imagine himself stationed upon the earth at A, in March, lookingupon the sun in the center, whose north or upper pole is now inclined toward him.The spots will then curve downward. Three months afterward—viz., in June—theearth will be at B; when the suns axis will…
Astronomy
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