 | 1822 - 440 pages
...seen in the morning and evening to depart from and return to the Sun ; but as the one never showed itself till the other disappeared, it was at last...the same planet which thus oscillated on each side the Sun. The apparent diameter of Mercury is very variable, and its changes are evidently connected... | |
 | James Ryan - 1827 - 408 pages
...seen in the morning and in the evening to depart from and return to the Sun ; but as one never showed itself till the other disappeared, it was at last...planet which thus oscillated on each side of the Sun. See La Place's System of the World. 6. The apparent diameter of Mercury is very variable, and its changes... | |
 | Leonard Dunnell Gale - 1838 - 308 pages
...ancients, and how was it explained1 one was never seen until the other disappeared, both were at last found to be the same planet, which thus oscillated on each side of the Sun. LVII. Mercury's oscillation from west to east, or from east to west, is really accomplished in just... | |
 | Elijah Hinsdale Burritt - 1838 - 350 pages
...in the evening. But as the one was never seen until the other disappeared, both were at last found to be the same planet, which thus oscillated on each side of the Sun. Mercury's oscillation from west to east, or from east to west, is really accomplished in just half... | |
| |
Mercury's oscillation from west to east, or from east to west, is really accomplished in just half the time of its revolution, which is about 44 days; but as the Earth, in the meantime, follows the Sun in the same direction, the apparent elongations will... 