Astronomy for the use of schools and academies (1882)
Gillet, J. A. (Joseph Anthony), 1837-1908, Rolfe, W. J. (William James), 1827-1910 · New York : Potter, Ainsworth, & Co. · leaf 110
around the earth, and the arrow in the arc betweenE and E indicates the direction of the earths motion inits orbit. When the moon is at Ml9 she is in conjunction.As the moon revolves around the earth, the earth movesforward in its orbit. When the moon has come round to0fl9 so that m?tmv is parallel… … is to say, the moon must make more than a complete revo-lution in a synodical period. The greater length of the synodical period is also evidentfrom Fig. no. Trepresents the earth, and Z the moon. Thearrows indicate the direction in which each is moving. Whenthe earth is at T, and the moon at Z,…
Astronomy
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