The Realm of the Nebulae

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Yale University Press, 1936 - Science - 207 pages
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No modern astronomer made a more profound contribution to our understanding of the cosmos than did Edwin Hubble, who first conclusively demonstrated that the universe is expanding. Basing his theory on the observation of the change in distanct galaxies, called red shift, Hubble showed that this is a Doppler effect, or alteration in the wavelength of light, resulting from the rapid motion of celestial objects away from Earth. In 1935, Hubble described his principal observations and conclusions in the Silliman lectures at Yale University. These lectures were published the following year as The Realm of the Nebulae, which quickly became a classic work.
 

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I haven't read this book yet! I accidentally gave it a star rating on my ipod (clumsy fat fingers), this book may well be worthy of 4 stars however please ignore my rating for now! Read full review

Contents

MagnitudeDifferences and LuminosityRatios
11
THE EXPLORATION OF SPACE
20
FAMILY TRAITS OF NEBULAE
36
THE SEQUENCE OF NEBULAR TYPES
45
DiameterLuminosity Relation
51
Spectral Types and Colors of Nebula
53
Relative Frequencies of Nebular Types
55
THE DISTRIBUTION OF NEBULAE
58
The VelocityDistance Relation
102
THE FORMULATION OF THE VELOCITYDISTANCE RELA
114
The Local Group
124
Members of the Local Group
126
The General Field
152
Absolute Magnitudes of Various Types of Nebulas
176
Diameters of Nebula
178
Spectrographs Masses of Nebula
180

APPARENT DISTRIBUTION OF NEBULA SHOWING
62
DISTRIBUTION OF NEBULA WHEN OBSERVATIONS
68
FREQUENCYDISTRIBUTION OF SAMPLES OF VARIOUS
74
LIGHT CURVES OF FOUR CEPHEIDS IN MESSIER 31
95
tion obscuring clouds the absorbing layer the general field
182
Index
203
Copyright

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About the author (1936)

As an undergraduate at the University of Chicago, Edwin Hubble was an exceptional boxer. His boxing abilities attracted the attention of a promoter who wanted to train him to fight the contemporary world heavyweight champion, Jack Johnson. Hubble, however, resisted the temptations of the boxing ring and instead became a Rhodes scholar. He practiced law for a short time, and in 1914 he found his niche in astronomy, attending the Yerkes Observatory for graduate work. In 1919 Hubble became an astronomer at the Mt. Wilson Observatory, where he remained until 1948. From 1948 to 1953, he was an astronomer at Mt. Palomar Observatory. Hubble's research on galaxies led to his conclusion that galaxies are actually swarms of hundreds of billions of stars. Using his research and that of others (principally Milton Humason and Vesto M. Slipher), Hubble established the relation between redshift and distance, which showed that the universe is expanding.

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