Astronomy Explained Upon Sir Isaac Newton's Principles: And made easy to those who have not studied mathematicsFerguson, James
Science
Astronomy Explained Upon Sir Isaac Newton's Principles: And made easy to those who have not studied mathematics
Ferguson, James
Astronomy -- Early works to 1800
+------------+-----------------+----------------+----------------------+
| | Proportion of | Proportion of | Proportion of |
| | the Radius of | the Time of | the Velocity of |
| The | the Planet’s | the Planet’s | each Satellite |
| Satellites | Orbit to the | Revolution to | to the Velocity |
| | Radius of the | the Revolution | of its primary |
| | Orbit of each | of each | Planet. |
| | Satellite. | Satellite. | |
+------------+-----------------+----------------+----------------------+
| of Saturn | | | |
| 1 | As 5322 to 1 | As 5738 to 1 | As 5738 to 5322 |
| 2 | 4155 1 | 3912 1 | 3912 4155 |
| 3 | 2954 1 | 2347 1 | 2347 2954 |
| 4 | 1295 1 | 674 1 | 674 1295 |
| 5 | 432 1 | 134 1 | 134 432 |
+------------+-----------------+----------------+----------------------+
| of Jupiter | | | |
| 1 | As 1851 to 1 | As 2445 to 1 | As 2445 to 1851 |
| 2 | 1165 1 | 1219 1 | 1219 1165 |
| 3 | 731 1 | 604 1 | 604 731 |
| 4 | 424 1 | 258 1 | 258 424 |
+------------+-----------------+----------------+----------------------+
| The Moon | As 337-1/2 to 1 | As 12-1/3 to 1 | As 12-1/3 to 337-1/2 |
+------------+-----------------+----------------+----------------------+
CHAP. XVI.
_The Phenomena of the Harvest-Moon explained by a common Globe: The
years in which the Harvest-Moons are least and most beneficial from
1751, to 1861. The long duration of Moon-light at the Poles in winter._
[Sidenote: No Harvest-Moon at the Equator.]
273. It is generally believed that the Moon rises about 48 minutes later
every day than on the preceding; but this is true only with regard to
places on the Equator. In places of considerable Latitude there is a
remarkable difference, especially in the harvest time; with which
Farmers were better acquainted than Astronomers till of late; and
gratefully ascribed the early rising of the Full Moon at that time of
the year to the goodness of God, not doubting that he had ordered it so
on purpose to give them an immediate supply of moon-light after sun-set
for their greater conveniency in reaping the fruits of the earth.
[Sidenote: But remarkable according to the distance of places from it.]
Public-domain text, read in full here on John Shaqi.
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