History of physical astronomy, from the earliest ages to the middle of the 19th century. Comprehending a detailed account of the establishment of the theory of gravitation by Newton, and its development by his successors; with an exposition of the progress of research on all the other subjects of celestial physics (1852)
Grant, Robert, 1814-1892 · London, R. Baldwin · leaf 645
is, lib. iv.). Delambre,having computed the equation of the centre by the modern analytical formulae, found thatthe three Chaldean eclipses assigned 4^ 39 16 as its value, and that the three eclipses ofPtolemy made it equal to 4 59 42. The close agreement of these results aflfords astrong… … Notwithstanding the striking points of dif-ference referred to in the foregoing remark, theeffects produced by the combination of the twoconstituent inequalities are identical in bothcases as respects the law of variation, and arealso nearly so in respect of absolute magni-tude. This may be easily…
Astronomy
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