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100   $a20160205d2016      u|         0
101 0 $aeng
135   $aur|n|---|||||
181   $ctxt
182   $cc
183   $acr
200 10$aVarying Gravity $eDirac?s Legacy in Cosmology and Geophysics /$fby Helge Kragh
205   $a1st ed. 2016.
210  1$aCham :$cSpringer International Publishing :$cImprint: Birkhäuser,$d2016.
215   $a1 online resource (197 p.)
225 1 $aScience Networks. Historical Studies,$x1421-6329 ;$v54
300   $aDescription based upon print version of record.
311   $a3-319-24377-2 
320   $aIncludes bibliographical references and index.
327   $aPreface -- 1.Introductory Issues -- 2.Varying Gravity -- 3.The Expanding Earth -- 4.After Plate Tectonics -- Bibliography -- Index.
330   $aThe main focus of this book is on the interconnection of two unorthodox scientific ideas, the varying-gravity hypothesis and the expanding-earth hypothesis. As such, it provides a fascinating insight into a nearly forgotten chapter in both the history of cosmology and the history of the earth sciences. The hypothesis that the force of gravity decreases over cosmic time was first proposed by Paul Dirac in 1937. In this book the author examines in detail the historical development of Dirac?s hypothesis and its consequences for the structure and history of the earth, the most important of which was that the earth must have been smaller in the past.
410  0$aScience Networks. Historical Studies,$x1421-6329 ;$v54
606   $aMathematics
606   $aHistory
606   $aCosmology
606   $aGeophysics
606   $aHistory of Mathematical Sciences$3https://scigraph.springernature.com/ontologies/product-market-codes/M23009
606   $aCosmology$3https://scigraph.springernature.com/ontologies/product-market-codes/P22049
606   $aGeophysics and Environmental Physics$3https://scigraph.springernature.com/ontologies/product-market-codes/P32000
615  0$aMathematics.
615  0$aHistory.
615  0$aCosmology.
615  0$aGeophysics.
615 14$aHistory of Mathematical Sciences.
615 24$aCosmology.
615 24$aGeophysics and Environmental Physics.
676   $a523.1
700   $aKragh$b Helge$4aut$4http://id.loc.gov/vocabulary/relators/aut$053342
801  0$bMiAaPQ
801  1$bMiAaPQ
801  2$bMiAaPQ
906   $aBOOK
912   $a9910254078003321
996   $aVarying Gravity$92283934
997   $aUNINA