A new treatise on astronomy, and the use of globes : in two parts ... (1866)
M'Intire, James, 1799-1879 · New York : Published by A.S. Barnes & Burr ... · leaf 92
N. 85 Now it is evident, beforeanother junction can takeplace, the earth will havemoved to E, and the moonto m, as represented in thefigure. When the sun andmoon are in conjunction,their longitudes are equal;and before another conjunc-tion can occur, the excessof the moons motion in lon-gitude over… … P1 the mean daily motion of the moon in longitude, and 1 1 ■P PP = the daily gain of the moonsmotion in longitude over that of the sun. Hence— P-P . , , . P P ^ p<p ■ 1 : : 1 c?- : p_p, d. By substituting, in the fourth term of this proportion, the values of P and P, we obtain 2^d. 12h. 44m.…
Astronomy
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