| 1814 - 378 pages
...disk ; and an eclipse of the moon begins on the eastern side of her disk, and ends on the western. Eclipses of the sun are more frequent than those of the moon, because his ecliptic limits are greater ; and yet we have more visible eclipses of the moon than of the sun,... | |
| Geography - 1825 - 770 pages
...luminaries cannot be less than two, nor more than seven : the most usual number is four, and it is very rare to have more than six. Eclipses of the Sun are more frequent than that of the Moon, because the Sun's ecliptic limits arc greater than the Moon's ; yet we have more... | |
| S. Treeby - Astronomy - 1826 - 244 pages
...middle of the sun, and the sun seems to form a ring round the moon, the eclipse is called annular. 222. Eclipses of the sun are more frequent than those of the moon ; and yet there are, to any particular place, more visible eclipses of the moon than of the sun ; because... | |
| Tobias Ostrander - Astronomy - 1832 - 276 pages
...nor more than seven ; the most usual number is four, and it is very rare to have more than six. The Eclipses of the Sun are more frequent than those of the Moon, because the Sun's ecliptic limits are greater than those of the Moon's. — (The proportions being as 17 is to 12,) yet we have more visible... | |
| Tobias Ostrander - Astronomy - 1832 - 276 pages
...usual number^ is four, and it is very rare to have more than six. TRe Eclipses of the Sun are pnore frequent than those of the Moon, because the Sun's ecliptic limits are greater than those of the Moon's. — '(The proportions being as 17 is to 12,) yet we ha^p more visible... | |
| Denison Olmsted - Astronomy - 1839 - 504 pages
...may last 12m. 24s. Since the sun's ecliptic limits are more than 17° and the moon's less than 12°, 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 - 1839 - 300 pages
...minutes, and can never continue so long as eight minutes. 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 - 1841 - 486 pages
...moon near his horizon. An annular eclipse may last, at most, twelve minutes and twenty-four seconds. 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 - 1844 - 292 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... | |
| William Pinnock - 1847 - 134 pages
...and it is very rare to have more than six, of which one half are seldom visible at all places. 11. Eclipses of the Sun are more frequent than those of the Moon, but not so many of them are visible. 12. The longest duration of a total and central eclipse of the... | |
| |