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December 2018 Issue,
Volume 86, No. 12
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A 鈥済ravity tunnel鈥� is the name given to a fictitious deep shaft drilled inside the Earth so that objects dropped from the surface of the Earth would free fall without ever touching the walls. It is well known that because of the rotation of the Earth, such tunnels are not straight lines but instead they emerge westward of the antipodal point, when the Earth is approximated as a rotating sphere. In this article, we determine the shape of gravity tunnels by taking into account the polar flattening of the Earth resulting from its rotation.
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Guest Editorial
by S. Deser.听 DOI: 10.1119/1.5078511
Papers
by J. R. Persson.听 DOI: 10.1119/1.5054005
by Songling Liu, Guoye Guan, Shuting Peng, and Fang Lin.听 DOI: 10.1119/1.5058511
by Josef M. Stadlbauer, Lukas Kehrer, and Siegfried Bauer.听 DOI: 10.1119/1.5062167
by Edmond Levy.听 DOI: 10.1119/1.5064446
by Yohan Vianna, Mariana R. Barros, and Malena Hor-Meyll.听 DOI: /10.1119/1.5065506
by Richard Taillet.听 DOI: 10.1119/1.5075716
by Charles Henderson, Raquib Khan, and Melissa Dancy.听 DOI: American Journal of Physics 86, 934 (2018); https://doi.org/10.1119/1.5065907
Apparatus and Demonstration Notes
by Elizabeth A. Bernhardt, Chad M. Garrison, Nathan F. Rasmussen, Joseph T. Lanska, and Mark G. Kuzyk.听 DOI: 10.1119/1.5050927
Book Reviews
by Tim Maudlin.听 DOI: 10.1119/1.5050194
by Peter Olver.听 DOI: 10.1119/1.5054300
by Christopher A. Fuchs.听 DOI: 10.1119/1.5053411
by Don Lincoln.听 DOI: 10.1119/1.5078509
Books Received
General Information, Resources for Authors, Reviewers, and Readers
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