Kosmos: Entwurf einer physischen Weltbeschreibung, Tom 3

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Strona 33 - To tell us that every species of thing is endowed with an occult specific quality by which it acts and produces manifest effects, is to tell us nothing : but to derive two or three general principles of motion from phaenomena, and afterwards to tell us how the properties and actions of all corporeal things follow from these manifest principles, would be a very great step in philosophy...
Strona 33 - But to derive two or three general principles of motion from phaenomena, and afterwards to tell us how the properties and actions of all corporeal things follow from those manifest principles, would be a very great step in philosophy, though the causes of those principles were not yet discovered. And therefore I scruple not to propose the principles of motion above mentioned, they being of very general extent, and leave their causes to be found out.
Strona 33 - How these attractions may be performed, I do not here consider. What I call 'attraction' may be performed by impulse, or by some other means unknown to me. I use that word here to signify only in general any force by which bodies tend toward one another, whatsoever be the cause.
Strona 360 - ... we could plainly see that all about the trapezium is a mass of stars ; the rest of the nebula also abounding with stars and exhibiting the characteristics of resolvability strongly marked.
Strona 359 - Of these a great number have been resolved into distinct stars, and a vast multitude more have been found to present that mottled appearance which renders it almost a matter of certainty that an increase of optical power would show them to be similarly composed. A not unnatural or unfair induction would therefore seem to be, that those which resist such resolution do so only in consequence of the smallness and closeness of the stars of which they consist ; that, in short, they are only optically...
Strona 56 - By their vivifying action vegetables are enabled to draw support from inorganic matter, and become in their turn the support of animals and...
Strona 119 - La lunette augmentera donc toujours l'intensité de la lumière des étoiles. Le cas le plus favorable, quant à l'effet des lunettes, est évidemment celui où l'œil reçoit la totalité du faisceau émergent , le cas où ce faisceau a moins de diamètre que la pupille. Alors toute la lumière que l'objectif embrasse concourt, par l'entremise du télescope, à la formation de l'image.
Strona 548 - ... privés à la fois de la lumière du Soleil et de celle de la Lune. Pour y parvenir, il eût suffi de mettre à l'origine la Lune en opposition avec le Soleil dans le plan même de l'écliptique, à une distance...
Strona 420 - ... même manière dans le polariscope des gaz enflammés. Cette expérience démontre que la lumière solaire ne sort pas d'une masse solide ou liquide incandescente. La lumière ne s'engendre pas uniquement à la surface des corps; une portion naît dans leur substance même, cette substance fût-elle du platine.
Strona 556 - Verrier, and not with the intention of interfering with his just claims to the honours of the discovery ; for there is no doubt that his researches were first published to the world, and led to the actual discovery of the planet by Dr. Galle, so that the facts stated above cannot detract, in the slightest degree, from the credit due to M. Le Verrier.

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