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Titlebook: Astrophysik IV: Sternsysteme / Astrophysics IV: Stellar Systems; S. Flügge Book 1959 Springer-Verlag OHG. Berlin · G?ttingen · Heidelberg

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41#
發(fā)表于 2025-3-28 14:45:15 | 只看該作者
Kinematical Basis of Galactic Dynamics,A correct kinematical description of the galaxy is a necessary first step before it is profitable to develop detailed dynamical theories. For example, if the motions in the galaxy are inward along the spiral arms the resulting dynamical theory will differ from one that explains circular motions.
42#
發(fā)表于 2025-3-28 19:28:17 | 只看該作者
43#
發(fā)表于 2025-3-29 00:33:21 | 只看該作者
44#
發(fā)表于 2025-3-29 06:34:36 | 只看該作者
45#
發(fā)表于 2025-3-29 11:17:40 | 只看該作者
https://doi.org/10.1007/978-3-319-25075-5ies can be described for carrying out the required measurements. But a distance derived from the exchange of light-signals between galaxies, while it can be imagined, is not one describable in terms of operations accessible to terrestrial astronomers.
46#
發(fā)表于 2025-3-29 11:25:26 | 只看該作者
47#
發(fā)表于 2025-3-29 19:35:26 | 只看該作者
48#
發(fā)表于 2025-3-29 20:42:07 | 只看該作者
Distance and Time in Cosmology: The Observational Data,ies can be described for carrying out the required measurements. But a distance derived from the exchange of light-signals between galaxies, while it can be imagined, is not one describable in terms of operations accessible to terrestrial astronomers.
49#
發(fā)表于 2025-3-30 01:07:10 | 只看該作者
50#
發(fā)表于 2025-3-30 06:43:43 | 只看該作者
From Biological to Artificial Consciousnessde more detailed studies of their colours, spectra and dynamics were undertaken principally at the Harvard, Lick, Mt. Wilson, Lund and Stockholm observatories. The main results available at the end of the war have been summarized by . [.] and by . [.].
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