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Updated: May 27, 2025
All the telescopes and microscopes which man makes, curiously and cunningly as they are made, are clumsy things compared with the divine workmanship of the eye. I cannot describe it to you; nor, if I could, is this altogether a fit place to do so.
Most comets appear to have bright centres nuclei, as they are called; but these nuclei are not solid bodies, for as soon as they are viewed by powerful telescopes, they become as diffused and transparent as the fainter cometic substance.
Indeed, in the early days when but few double stars were known, and when telescopes were not powerful enough to exhibit the numerous close doubles which have since been brought to light, there seems to have been a tendency to regard all double stars as merely such perspective effects. It was not at first suggested that there could be any physical connection between the components of each pair.
The many telescopes which our eager curiosity pointed towards its object, seemed each endued with the magical power of conveying different images to the sight. Some of us saw what others saw not, till these delusions of the imagination vanished before the conviction produced by rising columns of smoke visible to all, that the island was inhabited.
From the mainland, too, they were observed; and crowds of people lined the shore and gazed upon the distant speck, to which, by the aid of telescopes, the survivors were seen clinging with the tenacity of despair. But no boat could live in that raging sea, which still lashed madly against the riven rocks, although the violence of the storm had begun to abate.
But, after all, the moving of mountains seems a liliputian task compared with what Herschel really did with those wonderful telescopes. He moved worlds, stars, a universe even, if you please, a galaxy of universes; at least he proved that they move, which seems scarcely less wonderful; and he expanded the cosmos, as man conceives it, to thousands of times the dimensions it had before.
In the field of optics, also, Huygens has added considerably to science, and his work, Dioptrics, is said to have been a favorite book with Newton. During the later part of his life, however, Huygens again devoted himself to inventing and constructing telescopes, grinding the lenses, and devising, if not actually making, the frame for holding them.
Such has always been the case since the nebulæ have been observed with telescopes, and although it would be unsafe to draw the inference, it is impossible not to feel some expectation that with sufficient optical power the nebulæ would all be reduced into clusters.
The power of penetration of the telescope has not been increased, because that power is only exercised to the detriment of their clearness, and the moon, which is only a reflecting mirror, does not send a light intense enough for the telescopes to increase objects beyond that limit." "Very well, then, what do you mean to do?" asked the general.
The instrumental and meteorological requirements necessary for a successful scrutiny of the smallest type of these features, are beyond the reach of the ordinary observer in this country, as they demand direct observation in large telescopes under the best atmospheric conditions. Some years ago Dr.
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