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Issues
October 1989
ISSN 0002-9505
EISSN 1943-2909
In this Issue
Guest Comment
Papers
Some general commutation rules and identities for three‐dimensional quantum‐mechanical operators
Am. J. Phys. 57, 923–925 (1989)
https://doi.org/10.1119/1.15848
Using nonexponential absorption to demonstrate that anode x rays are polychromatic
Am. J. Phys. 57, 931–936 (1989)
https://doi.org/10.1119/1.15850
A further canonical study of the damped linear oscillator
Am. J. Phys. 57, 941–943 (1989)
https://doi.org/10.1119/1.15852
Using a Smart‐pulley Atwood machine to study rocket motion
Am. J. Phys. 57, 943–946 (1989)
https://doi.org/10.1119/1.15853
Notes and Discussions
Apparatus Notes
Book Reviews
Temperature as joules per bit
Charles Alexandre Bédard, Sophie Berthelette, et al.
All objects and some questions
Charles H. Lineweaver, Vihan M. Patel
Internal ballistics of the sling
Mark Denny
Ergodic Lagrangian dynamics in a superhero universe
I. L. Tregillis, George R. R. Martin
The right way to introduce complex numbers in damped harmonic oscillators
Jason Tran, Leanne Doughty, et al.
A first encounter with exceptional points in a quantum model
C. A. Downing, V. A. Saroka