The Expanding Universe: Astronomy's 'Great Debate', 1900-1931Cambridge University Press, 8. apr. 1982 - 220 síður In the years between 1900 and 1931 astronomers witnessed three startling changes in their view of the Universe. First, the accepted value of the size of the star system, which increased by a factor of ten; secondly, evidence forced the acceptance of the fact that there are other star systems beyond our own Galaxy; and lastly, that observation of these external galaxies disclosed the expansion of the Universe. This book, originally published in 1982, describes and explains in detail these shifts in opinion, considering them in the light of theories and ideas on the nature of the Universe, were current at the beginning of the twentieth century. Archive material is used to provide major interpretations of several of the processes and events associated with these shifts such as the 'Great Debate' between Harlow Shapley and H. D. Curtis in 1920 on 'The scale of the Universe'. This book with be of interest to professional and amateur astronomers as well as historians of science. |
Efni
The revival of the island universe theory | 1 |
Shapleys model of the Galaxy and the Great Debate | 55 |
The Debate ends | 97 |
The development of the island universe theory 1925 | 147 |
its origins and develop | 165 |
Bibliography | 202 |
217 | |
Aðrar útgáfur - View all
The Expanding Universe: Astronomy's 'Great Debate', 1900-1931 Robert W. Smith Engin sýnishorn í boði - 2009 |
Common terms and phrases
absolute magnitudes Adams analysis Andromeda Nebula apparent argued Astron Astrophys astrophysics Berendzen brightness calculated Campbell centre Cepheid variables cluster variables comparable-galaxy Curtis Curtis's Debate density detected diameter distance indicators early Eddington Einstein errors estimate external galaxies extragalactic nebulae galactic system globular clusters Hale Hart Harvard Hertzsprung Hetherington Hoskin Hubble to H Hubble's Huggins Humason hypothesis internal motions investigation island universe theory Jeans Jeans's Kapteyn km s¹ Lick Lick Observatory light Lindblad Lowell luminosity Lundmark Maanen Maanen's measures mass Messier Milky motions in spiral Mount Wilson Mount Wilson Observatory observations Observatory Oort open clusters paper parallax parsecs period period-luminosity photographic plates proper motions radial velocities redshift redshift-distance relation reflector Reynolds rotation Russell Seares Shapley to H Shapley's model Sitter Slipher Small Magellanic Cloud solar motion Solution space spectral spectroscopic spiral nebulae star clusters star systems stellar system studies telescope told Shapley velocity-distance wrote