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Issues
September 2009
ISSN 0002-9505
EISSN 1943-2909
LETTERS TO THE EDITOR
PAPERS
Application of high-speed imaging to determine the dynamics of billiards
Am. J. Phys. 77, 788–794 (2009)
https://doi.org/10.1119/1.3157159
Hidden momentum, field momentum, and electromagnetic impulse
Am. J. Phys. 77, 826–833 (2009)
https://doi.org/10.1119/1.3152712
APPARATUS AND DEMONSTRATION NOTES
A classroom demonstration of levitation and suspension of a superconductor over a magnetic track
Am. J. Phys. 77, 847–851 (2009)
https://doi.org/10.1119/1.3095809
BOOK REVIEWS
Ergodic Lagrangian dynamics in a superhero universe
I. L. Tregillis, George R. R. Martin
A simple Minkowskian time-travel spacetime
John D. Norton
All objects and some questions
Charles H. Lineweaver, Vihan M. Patel
The most efficient thermodynamic cycle under general engine constraints
Christopher Ong, Shaun Quek
Kepler's Moon puzzle—A historical context for pinhole imaging
Thomas Quick, Johannes Grebe-Ellis
The surprising subtlety of electrostatic field lines
Kevin Zhou, Tomáš Brauner