Moulton, Forest Ray, 1872-1952 · New York, The Macmillan company · leaf 219
eastward among the stars were uniform, eachsolar day wouldbe longer thanthe sidereal dayby the sameamount; andsince the siderealdays are all ofequal length, thesolar days alsowould all be ofequal length.But the east-ward apparentmotion of the sun is somewhat variable because of two principal… … Fig. 62. — Solar days are longer than sidereal days. CH. VI, 107] TIME 173 stars equals the angular distance the earth moves forwardin its orbit. This is made evident from Fig. 62, in whichEl represents the position of the earth when it is noon at A.At the next noon at A, solar time, the earth has…
Astronomy
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