A text-book of general astronomy : for colleges and scientific schools (1888)
Young, Charles A. (Charles Augustus), 1834-1908 · Boston ; London : Ginn & Company · leaf 251
en the eclipse becomes total or annular; the third, atthe cessation of the total or annular phase; and the fourth, whenthe moon finally leaves the disc of the sun. From the first contactto the fourth the duration may be a little over two hours. 386. The Solar Ecliptic Limits. — It is necessary, in… … Fig. 132. — Solar Ecliptic Limits. — that is, their distance as seen from the centre of the earth— wouldbe the angle MES in the figure. This is made up of three angles:MEF, which equals the moons semi-diameter, S; AES, the sunssemi-diameter ; S ; and FEA. This latter angle is equal to the differ-…
Astronomy
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