 | Olinthus Gilbert Gregory - 1802 - 590 páginas
...lunar eclipses, as they will nearly bear the proportion of their limits, viz. about four to three. But more lunar than solar eclipses are seen at any given place ; because a lunar eclipse is visible on a whole terrestrial hemisphere at once, whereas a solar eclipse is visible only on a portion of... | |
 | John Pinkerton - 1804 - 694 páginas
...34', or nearly as 3 to 2, and hence there will be more solar than lunar eclipses, in about that ratio. But more lunar than solar eclipses are seen at any...because a lunar eclipse is visible to a whole hemisphere of the earth at Once ; whereas a solar eclipse is visible to a part only, and therefore there is a... | |
 | Thomas Keith - 1811 - 388 páginas
...will be more solar than lunar eclipses, in the ratio of 17° 21' to 11° 34', or nearly of 3 to 2 ; but more lunar than solar eclipses are seen at any...whereas, a solar eclipse is visible only to a part, as has been observed before ; and therefore there is a greater probability of seeing a lunar than a... | |
 | John Lathrop - 1812 - 218 páginas
...lunar eclipses, in nearly the ratio of three to two ; but more lunar than solar eclipses are visible, because a lunar eclipse is visible to a whole hemisphere...whereas a solar eclipse is visible only to a part of a hemisphere. 319. A tide is that motion of the water in the seas and riVters by which they are... | |
 | Samuel Vince - 1814 - 602 páginas
...preceding year. 589. The ecliptic limits of the sun (560) are greater than those of the moon (552), and hence there will be more solar than lunar eclipses,...see half the number of lunar eclipses which happen. To compute the Time of an Occullation of a Fixed Star by the Moon. 590. Find, from the precepts and... | |
 | Jedidiah Morse - 1814 - 696 páginas
...34, or nearly as 3 to 2, and hence there will be more solar than lunar eclipses, in about that ratio. But more lunar than solar eclipses are seen at any...because a lunar eclipse is visible to a whole hemisphere of the earth at once ; whereas a solar eclipse is visible to a part only, and therefore there is a... | |
 | Thomas Keith - 1819 - 380 páginas
...will be more solar than lunar eclipses, in the ratio of 17" 21' to 11° 34', or nearly of 3 to 2 ; but more lunar than solar eclipses are seen at any...whereas, a solar eclipse is visible only to a part, as has been observed before, and therefore, there is a greater probability of seeing a lunar than a... | |
 | Samuel Vince - 1820 - 472 páginas
...of the seasons of the eclipses happens every year about 19 days sooner than in the preceding-year. The ecliptic limits of the sun (313) are greater than...see half the number of lunar eclipses which happen. For the calculation of eclipses, and all the circumstances respecting them, see my Complete System... | |
 | Thomas Keith - 1821 - 408 páginas
...solar eclipses are seen at any fiven place, because a lunar eclipse is visible to a whole emisphere at once ; whereas a solar eclipse is visible only to a part, as has been observed .before, and therefore there is a greater probability of seeing a lunar than a... | |
 | Sidney Edwards Morse - 1822 - 706 páginas
...34, or nearly as 3 to 2, and hence there will be more solar than lunar eclipse*, in about that ratio. But more lunar than solar eclipses are seen at any given place, because a lunar eclipse is risible to a whole hemisphere of the earth at once ; whereas a solar eclipse is visible to a part only,... | |
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... and therefore there is a greater probability of seeing a lunar than a solar eclipse. Since the moon is as long above the horizon as below, every spectator may expect to see half the number of lunar eclipses which happen. 
