Meddelanden Från Astronomiska Observatorium, Uppsala, Issues 30-37

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Wretmans Boktryckeri AB, 1927
 

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Page 12 - No competent thinker with the whole of the available evidence before him, can now, it is safe to say, maintain any single nebula to be a star system of co-ordinate rank with the Milky Way.
Page 12 - I expected! A single bright line only! At first I suspected some displacement of the prism, and that I was looking at a reflection of the illuminated slit from one of its faces. This thought was scarcely more than momentary; then the true interpretation flashed upon me. The light of the nebula was monochromatic, and so, unlike any other light I had as yet subjected to prismatic examination, could not be extended out to form a complete spectrum. After passing through the two prisms it remained concentrated...
Page 12 - I looked into the spectroscope. No spectrum such as I expected! A single bright line only! At first I suspected some displacement of the prism, and that I was looking at a reflection of the illuminated slit from one of its faces. This thought was scarcely more than momentary; then the true interpretation flashed upon me. The light of the nebula was monochromatic, and so, unlike any other light I had as yet subjected to prismatic examination...
Page 6 - There are some very remarkable nebulae which cannot well be less, but are probably much larger than our system ; and being also extended, the inhabitants of the planets that attend the stars which compose these nebulae, must likewise perceive the same phenomena ; for which reason these nebulae may also be called Milky Ways by way of distinction.
Page 10 - Mathematics," read before the American association for the advancement of science in 1848; one on the "Origin of the Forms and the Present Condition of some of the Clusters of Stars...
Page 11 - Spencer, who wrote: In that zone of celestial space where stars are excessively abundant nebulae are rare; while in the two opposite celestial spaces that are furthest removed from this zone nebulae are abundant Can this be mere coincidence? When to the fact that the general mass of the nebulae are antithetical in position to the general mass of the stars, we add the fact that local regions of nebulae are regions where stars are scarce does not the proof of a physical connection become overwhelming?
Page 9 - ... when our gages will no longer resolve the milky way into stars, it is not because its nature is ambiguous, but because it is fathomless.
Page 6 - Milky-Way, it may not be amiss to point out some other very remarkable Nebulae which cannot well be less, but are probably much larger than our own system; and, being also extended, the inhabitants of the planets that attend the stars which compose them must likewise perceive the same phaenomena.
Page 11 - ... too remote to be separated into their component stars. Lord Rosse himself was careful to point out that it would be unsafe from his observations to conclude that all nebulosity is but the glare of stars too remote to be resolved by our instruments. In 1858...
Page 25 - I did not at first believe in these dark obscuring masses. The proof was not conclusive. The increase of evidence, however, from my own photographs convinced me later, especially after investigating some of them visually, that many of these markings were not simply due to an actual want of stars, but were really obscuring bodies nearer to us than the distant stars. In this way it has fallen to my lot to prove this fact. I think there is sufficient proof now to make this certain.

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