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Issues
December 1980
ISSN 0002-9505
EISSN 1943-2909
In this Issue
Letters To The Editor
Papers
Investigation of student understanding of the concept of velocity in one dimension
Am. J. Phys. 48, 1020–1028 (1980)
https://doi.org/10.1119/1.12298
Three‐particle symmetry classifications according to the method of Dirac
Am. J. Phys. 48, 1038–1042 (1980)
https://doi.org/10.1119/1.12301
Model experiment of two‐dimensional Brownian motion by microcomputer
Am. J. Phys. 48, 1050–1055 (1980)
https://doi.org/10.1119/1.12303
A problem and its solution involving Maxwell’s equations and an inhomogeneous medium
Am. J. Phys. 48, 1063–1065 (1980)
https://doi.org/10.1119/1.12287
Book Reviews
A simple model of a gravitational lens from geometric optics
Bogdan Szafraniec, James F. Harford
Playing with active matter
Angelo Barona Balda, Aykut Argun, et al.
The physics of “everesting” on a bicycle
Martin Bier
The hardest-hit home run?
Donald C. Warren