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＜電子ブック＞
Varying Gravity : Dirac’s Legacy in Cosmology and Geophysics / by Helge Kragh
(Science Networks. Historical Studies. ISSN:22966080 ; 54)

版	1st ed. 2016.
出版者	(Cham : Springer International Publishing : Imprint: Birkhäuser)
出版年	2016
大きさ	XI, 185 p. 16 illus., 12 illus. in color : online resource
著者標目	*Kragh, Helge author SpringerLink (Online service)
件　名	LCSH:Mathematics LCSH:History LCSH:Cosmology LCSH:Environmental sciences LCSH:Physics FREE:History of Mathematical Sciences FREE:Cosmology FREE:Environmental Physics
一般注記	Preface -- 1.Introductory Issues -- 2.Varying Gravity -- 3.The Expanding Earth -- 4.After Plate Tectonics -- Bibliography -- Index The main focus of this book is on the interconnection of two unorthodox scientific ideas, the varying-gravity hypothesis and the expanding-earth hypothesis. As such, it provides a fascinating insight into a nearly forgotten chapter in both the history of cosmology and the history of the earth sciences. The hypothesis that the force of gravity decreases over cosmic time was first proposed by Paul Dirac in 1937. In this book the author examines in detail the historical development of Dirac’s hypothesis and its consequences for the structure and history of the earth, the most important of which was that the earth must have been smaller in the past HTTP:URL=https://doi.org/10.1007/978-3-319-24379-5

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