Jones, H. Spencer (Harold Spencer), 1890- · London E. Arnold & co. · leaf 56
intsto the next are called the seasons. Owing to the varyingvelocity of the Earth in its orbit, the lengths of the four seasonsare unequal. This will be made clearer by a reference to Pig.16, which shows the orbit of the Earth with the Sun in one ofthe foci S. The positions of perihelion P, and… … THE EARTH IN RELATION TO THE SUN 43 T, these lines will intersect the orbit in the points designated T, ^ and M, N. Since the Sun is in the First Point of Aries at the vernal equinox, the Earth must then be at ===. It will be at T six months later, at the autumnal equinox. It will similarly be at N…
Astronomy
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