 | Richmal Mangnall - 1848 - 498 pages
...and it is very rare to have more than six, of which one half are seldom visible at all places. 35. Eclipses of the sun are more frequent than those of the moon, but not so many of them are visible. 36. The several phases and eclipses of the moon will be more easily... | |
 | Denison Olmsted - 1852 - 312 pages
...the sun's, but a ring of the sun appears all around the moon, constituting an annular eclipse. 248. Eclipses of the sun are more frequent than those of the moon. Yet, lunar eclipses, being visible to every part of the hemisphere of the earth in which the moon is... | |
 | J. Tabor - 1853 - 112 pages
...exceed 63' 45", she will not be eclipsed, but if it be less than 51' 57", an eclipse is certain. 172. Eclipses of the sun are more frequent than those of the moon, because the sun's ecliptic limits, ie, the distance from the nodes, (18° 36',) within which an eclipse may occur, are greater than the... | |
 | Denison Olmsted - Astronomy - 1855 - 318 pages
...minutes, and can never continue so long as eight minuutes. An annular eclipse may last 12m. 24s. 183. Eclipses of the sun are more frequent than those of the moon. Yet lunar eclipses being visible to every part of the terrestrial hemisphere opposite to the sun, while... | |
 | Denison Olmsted - Astronomy - 1858 - 318 pages
...minutes, and can never continue so long as eight minuutes. An annular eclipse may last 12m. 24s. 183. Eclipses of the sun are more frequent than those of the moon. Yet lunar eclipses being visible to every part of the terrestrjal hemisphere opposite to the sun, while... | |
 | Henry Kiddle - Astronomy - 1868 - 300 pages
...sun, within the limits on each side. 186. Since the solar ecliptic limits are wider than the lunar, eclipses of the sun are more frequent than those of the moon. 187. The greatest number of eclipses that can happen in a year is seven; five of the sun and two of... | |
 | Henry Kiddle - Astronomy - 1877 - 296 pages
...within the limits on each side. - — 186. Since the solar ecliptic limits are wider than the lunar, eclipses of the sun are more frequent than those of the moon. 187. The greatest number of eclipses that can happen in a year is seven ; five of the sun and two of... | |
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... small portion of the hemisphere on which the moon's shadow falls, it happens that for any particular place on the earth, lunar eclipses are more frequently... 
