99 Classic Science-Fiction Short Stories. Айзек Азимов
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Название: 99 Classic Science-Fiction Short Stories

Автор: Айзек Азимов

Издательство: Bookwire

Жанр: Языкознание

Серия: 99 Readym Anthologies

isbn: 9782291063476

isbn:

СКАЧАТЬ (as far as it went) and release, for these are familiar to the public. That he has actually realized, in spirit and in effect, if not to the letter, the old chimera of the philosopher's stone, no sane person is at liberty to doubt. The opinions of Arago are, of course, entitled to the greatest consideration; but he is by no means infallible; and what he says of bismuth, in his report to the Academy, must be taken cum grano salis. The simple truth is, that up to this period all analysis has failed; and until Von Kempelen chooses to let us have the key to his own published enigma, it is more than probable that the matter will remain, for years, in statu quo. All that as yet can fairly be said to be known is, that "pure gold can be made at will, and very readily from lead in connection with certain other substances, in kind and in proportions, unknown."

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      1

      Mr. Ainsworth has not attempted to account for this phenomena, which, however, is quite susceptible of explanation. A line dropped from an elevation of 25,000 feet, perpendicularly to the surface of the earth (or sea), would form the perpendicular of a right-angled triangle, of which the base would extend from the right angle to the horizon, and the hypothenuse from the horizon to the balloon. But the 25,000 feet of altitude is little or nothing, in comparison with the extent of the prospect. In other words, the base and hypothenuse of the supposed triangle would be so long when compared with the perpendicular, that the two former may be regarded as nearly parallel. In this manner the horizon of the æronaut would appear to be on a level with the car. But, as the point immediately beneath him seems, and is, at a great distance below him, it seems, of course, also, at a great distance below the horizon. Hence the impression of concavity; and this impression must remain, until he elevation shall bear so great a proportion to the extent of prospect, that the apparet parallelism of the base and hypothenuse disappears—when the earth's real convexity must become apparent.

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1

Mr. Ainsworth has not attempted to account for this phenomena, which, however, is quite susceptible of explanation. A line dropped from an elevation of 25,000 feet, perpendicularly to the surface of the earth (or sea), would form the perpendicular of a right-angled triangle, of which the base would extend from the right angle to the horizon, and the hypothenuse from the horizon to the balloon. But the 25,000 feet of altitude is little or nothing, in comparison with the extent of the prospect. In other words, the base and hypothenuse of the supposed triangle would be so long when compared with the perpendicular, that the two former may be regarded as nearly parallel. In this manner the horizon of the æronaut would appear to be on a level with the car. But, as the point immediately beneath him seems, and is, at a great distance below him, it seems, of course, also, at a great distance below the horizon. Hence the impression of concavity; and this impression must remain, until he elevation shall bear so great a proportion to the extent of prospect, that the apparet parallelism of the base and hypothenuse disappears—when the earth's real convexity must become apparent.

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