Abstract
THE three years which have elapsed since the publication of the second edition of this book have been fruitful in discovery in both physics and astronomy. To the two fundamental units of which matter was believed to be composed, the proton and the electron, have been added the neutron and the positron. The exclusion principle has assumed great prominence and many investigations have been concerned with the properties and nature of the highly penetrating or cosmic radiation. Much attention has been given to the theory of the expansion of the universe and to the question whether the observed rate of expansion, indicating a relatively short time-scale for the age of the universe, can be reconciled with the much longer time-scale which many lines of evidence point to for the evolution of the stars; or whether, on the other hand, previous conceptions must be abandoned and the short time-scale adopted for the stars also.
The Universe Around Us.
By Sir James Jeans. Third edition, revised and enlarged. Pp. x + 380 + 30 plates. (Cambridge: At the University Press, 1933.) 12s. 6d. net.
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The Universe Around Us. Nature 133, 234 (1934). https://doi.org/10.1038/133234a0
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DOI: https://doi.org/10.1038/133234a0