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101 0 $aeng
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181   $ctxt$2rdacontent
182   $cc$2rdamedia
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200 14$aThe hunt for Earth gravity $ea history of gravity measurement from Galileo to the 21st century /$fJohn Milsom
205   $a1st ed. 2018.
210  1$aCham :$cSpringer International Publishing :$cImprint: Springer,$d2018.
215   $a1 online resource (416 pages)
327   $aIntroduction -- Some Notes on Units -- I. The Beginning -- II. The Making of a Map -- III. The Astronomers -- IV. The synthesis -- V. The figure of the Earth -- VI. The Attraction of Mountains -- VII. The Pitfalls of Pendulums -- VIII. Change of a change -- IX. The rise and fall of springs -- X. The challenges of motion -- XI. A Map of the World -- XII. Epilogue.
330   $aThe author of this history of mankind?s increasingly successful attempts to understand, to measure and to map the Earth?s gravity field (commonly known as ?little g? or just ?g?) has been following in the footsteps of the pioneers, intermittently and with a variety of objectives, for more than fifty years. It is a story that begins with Galileo?s early experiments with pendulums and falling bodies, progresses through the conflicts between Hooke and Newton and culminates in the measurements that are now being made from aircraft and satellites. The spectacular increases in accuracy that have been achieved during this period provide the context, but the main focus is on the people, many of whom were notable eccentrics. Also covered are the reasons WHY these people thought their measurements would be useful, with emphasis in the later chapters on the place of ?g? in today?s applied geology, and on the ways in which it is providing new and spectacular visions of our planet. It is also, in part, a personal memoir that explores the parallels between the way fieldwork is being done now and the difficulties that accompanied its execution in the past. Selected topics in the mathematics of ?g? are discussed in a series of short Codas.
606   $aDouble pendulums$xHistory
606   $aGravity$xMeasurement$xHistory
606   $aPendulum$xHistory
615  0$aDouble pendulums$xHistory.
615  0$aGravity$xMeasurement$xHistory.
615  0$aPendulum$xHistory.
676   $a526.7
700   $aMilsom$b John$4aut$4http://id.loc.gov/vocabulary/relators/aut$0521586
906   $aBOOK
912   $a9910299395103321
996   $aThe Hunt for Earth Gravity$92510535
997   $aUNINA