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Updated: June 8, 2025
If a similar cause, in the perigee of central eclipses, sometimes renders the disc invisible, may it not happen also that only a small portion of the moon is seen; a disc, irregularly formed, and of which different parts were successively enlightened? On the morning of the 30th of March we doubled Punta Gigantes, and made for the Boca Chica, the present entrance of the port of Carthagena.
Philosophical thought had reached its perigee in Maimonides, and what followed after was an attempt on the part of his lesser disciples and successors to follow in the steps of their master, to extend his teachings, to make them more widespread and more popular.
"The moon does not describe a circle round the earth, but an ellipse, of which our earth occupies one of the foci; the consequence is, therefore, that at certain times it approaches nearer to, and at others recedes farther from, the earth, or, in astronomical language, it has its apogee and its perigee.
But it must be borne in mind that the form of the moon's orbit being an ellipse of eccentricity amounting to no less than 0.05484 of the major semi-axis of the ellipse itself, and the earth's centre being situated in its focus, if I could, in any manner, contrive to meet the moon, as it were, in its perigee, the above mentioned distance would be materially diminished.
"First," continued Barbican: "r, the Earth's radius is, in the latitude of Florida, about 3,921 miles. d, the distance from the centre of the Earth to the centre of the Moon is 56 terrestrial radii, which the Captain calculates to be...?" "To be," cried M'Nicholl working rapidly with his pencil, "219,572 miles, the moment the Moon is in her perigee, or nearest point to the Earth."
Now the difference between its greatest and its least distance is too considerable to be left out of consideration. In point of fact, in its apogee the moon is 247,552 miles, and in its perigee, 218,657 miles only distant; a fact which makes a difference of 28,895 miles, or more than one-ninth of the entire distance.
The academy has paid great attention to this subject; and it issues annually an almanac, in which the different phases, the revolutions, the periods, the eclipses, whether partial or total, the distances from the centre of light, the apogee and perigee of all the more prominent truths, are calculated with singular accuracy; and by the aid of which the cautious are enabled to keep themselves, as near as possible, within the bounds of reason.
The longest Stunnin'tun eclipses seldom went over three hours he once knew Deacon Spiteful pray quite through one, from apogee to perigee. He therefore proposed that Sir John and he should resign their seats without delay, and that they should try to get the Walrus to the north'ard as quick as possible, lest they should be caught in the polar night. As for the Hon.
It happens fortunately that on December 4th of next year the moon will offer these two conditions; at midnight she will be at her perigee and her zenith that is to say, at her shortest distance from the earth and at her zenith at the same time. "Regarding question No. 5, 'At what point in the heavens ought the cannon destined to hurl the projectile be aimed?
A second search-light from the monitor Miantonomoh sent another slender electric ray of inquiry in the direction of the intruder, as if still doubtful of its character; but when the straight blue sword of the Fort Taylor search-light rose to the clouds and fell to the water three times, as if striking a whole league of ocean three successive and measured blows, the Miantonomoh understood that all was well, and her own search-light left the gunboat and swept across the starry sky overhead like the tail of a huge blue comet swinging at its perigee around a darkened sun.
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