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Issues
November 2009
ISSN 0002-9505
EISSN 1943-2909
In this Issue
LETTERS TO THE EDITOR
PAPERS
Atomic clocks and coherent population trapping: Experiments for undergraduate laboratories
Am. J. Phys. 77, 988–998 (2009)
https://doi.org/10.1119/1.3120262
Student ability to apply the concepts of work and energy to extended systems
Am. J. Phys. 77, 999–1009 (2009)
https://doi.org/10.1119/1.3183889
A bead on a hoop rotating about a horizontal axis: A one-dimensional ponderomotive trap
Am. J. Phys. 77, 1039–1048 (2009)
https://doi.org/10.1119/1.3167216
Generalized composition law from matrices
Am. J. Phys. 77, 1068–1073 (2009)
https://doi.org/10.1119/1.3152955
NOTES AND DISCUSSIONS
BOOK REVIEWS
Playing with active matter
Angelo Barona Balda, Aykut Argun, et al.
A simple model of a gravitational lens from geometric optics
Bogdan Szafraniec, James F. Harford
All objects and some questions
Charles H. Lineweaver, Vihan M. Patel
A simplified relativity experiment
David P. Jackson, Fedya Grishanov, et al.