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Issues

Volume 57, Issue 4
April 1989
American Journal of Physics Cover Image for Volume 57, Issue 4
All Issues
ISSN 0002-9505
EISSN 1943-2909
In this Issue

Guest Comment

Guest Comment: Why scientists should popularize science
Carl Sagan
Am. J. Phys. 57, 295 (1989) https://doi.org/10.1119/1.16063
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Editorial

Editorial: AJP Reviewers—Thank You!
Robert H. Romer; Mark D. Semon
Am. J. Phys. 57, 296 (1989) https://doi.org/10.1119/1.16066
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Papers

American Association of Physics Teachers: Citations for Distinguished Service for 1989
Am. J. Phys. 57, 297–298 (1989) https://doi.org/10.1119/1.16067
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Molecular beam experiments, the Lamb shift, and the relation between experiments and theory
S. S. Schweber
Am. J. Phys. 57, 299–308 (1989) https://doi.org/10.1119/1.16068
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How big is a cyclotron?
Lowell S. Brown
Am. J. Phys. 57, 308–309 (1989) https://doi.org/10.1119/1.16127
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Geometrical interpretation of the simultaneous diagonalization of two quadratic forms
P. K. Aravind
Am. J. Phys. 57, 309–311 (1989) https://doi.org/10.1119/1.16069
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Fresnel lenses
B. A. Aničin; V. M. Babović; D. M. Davidović
Am. J. Phys. 57, 312–316 (1989) https://doi.org/10.1119/1.16071
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Introducing Schrödinger’s cat in the laboratory
T. J. Axon
Am. J. Phys. 57, 317–321 (1989) https://doi.org/10.1119/1.16128
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Timely equations of rocket motion and the surprising power of rockets
R. Stephenson
Am. J. Phys. 57, 322–325 (1989) https://doi.org/10.1119/1.16039
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A simple method for measurement of the diffusion of vapors
Arnold J. Abraham; Charles P. Bean
Am. J. Phys. 57, 325–330 (1989) https://doi.org/10.1119/1.16040
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Galilean transformation and the path integral propagator for a crossed electric and magnetic field
Carlos Farina de Souza; Álvaro de Souza Dutra
Am. J. Phys. 57, 330–332 (1989) https://doi.org/10.1119/1.16041
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Time‐reversal invariance in multiple collisions between coupled masses
Frank S. Crawford
Am. J. Phys. 57, 333–339 (1989) https://doi.org/10.1119/1.16042
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An approximate analytic solution of the spectral inverse problem
Ray Engelke
Am. J. Phys. 57, 339–344 (1989) https://doi.org/10.1119/1.16043
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Deriving a formula for nuclear radii using the measured atomic masses of elements
N. Gauthier
Am. J. Phys. 57, 344–346 (1989) https://doi.org/10.1119/1.16044
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Heuristic methods for counting and sizing of molecules in the liquid state
R. E. Crandall; T. G. Dunne
Am. J. Phys. 57, 346–351 (1989) https://doi.org/10.1119/1.16045
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A classroom exercise to determine the Earth–Moon distance
E. Roger Cowley
Am. J. Phys. 57, 351–352 (1989) https://doi.org/10.1119/1.16046
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Redesigning courses and textbooks for the twenty‐first century
Gordon J. Aubrecht, II
Am. J. Phys. 57, 352–359 (1989) https://doi.org/10.1119/1.16047
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A remark on the gravitational field produced by an infinite straight string
G. Francisco; G. E. A. Matsas
Am. J. Phys. 57, 359–362 (1989) https://doi.org/10.1119/1.16021
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Exercises in the synthesis of electrical impedances
Robert L. Collier
Am. J. Phys. 57, 362–365 (1989) https://doi.org/10.1119/1.16022
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Measurement of refractive index by double‐exposure speckle pattern recording
P. K. Buah‐Bassuah; F. Francini; G. Molesini
Am. J. Phys. 57, 366–370 (1989) https://doi.org/10.1119/1.16023
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An experiment on the physical reality of edge‐diffracted waves
Salvatore Ganci
Am. J. Phys. 57, 370–373 (1989) https://doi.org/10.1119/1.16024
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Notes and Discussions

Calculating the parameters of Earth’s orbit
M. G. Calkin
Am. J. Phys. 57, 374–375 (1989) https://doi.org/10.1119/1.16025
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Still more on the Coulomb potential
Wayne A. Bowers
Am. J. Phys. 57, 375–376 (1989) https://doi.org/10.1119/1.16026
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Determination of the generalized Laplace–Runge–Lenz vector by an inverse matrix method
Takeshi Yoshida
Am. J. Phys. 57, 376–377 (1989) https://doi.org/10.1119/1.16027
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Another method for the Gantmakher formula
Oliver Keyes
Am. J. Phys. 57, 378 (1989) https://doi.org/10.1119/1.16028
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Inefficiency and irreversibility in the Bucher diagram
J. Wallingford
Am. J. Phys. 57, 379–381 (1989) https://doi.org/10.1119/1.16030
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The correct relation between wavefunctions in two gauges
R. J. Swenson
Am. J. Phys. 57, 381–382 (1989) https://doi.org/10.1119/1.16031
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Comment on ‘‘Unified vector derivation on Gantmakher’s, rotation, and charged particle deflection formulas,’’ by P. K. Aravind [Am. J. Phys. 55, 744 (1987)]
Lars Falk
Am. J. Phys. 57, 378–379 (1989) https://doi.org/10.1119/1.16029
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Book Reviews

Incompleteness, Nonlocality, and Realism: A Prolegomenon to the Philosophy of Quantum Mechanics
Michael Redhead; Leslie E. Ballentine
Am. J. Phys. 57, 383–384 (1989) https://doi.org/10.1119/1.16032
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All objects and some questions
Charles H. Lineweaver, Vihan M. Patel
On the analogy between spinning disks coming to rest and merging black holes
Domenico Davide Meringolo, Francesco Conidi, et al.
Ergodic Lagrangian dynamics in a superhero universe
I. L. Tregillis, George R. R. Martin
Detecting gravitational waves with light
Markus Pössel
Online “Advanced Labs” in physics
Peter A. Bennett
Quantum solutions for the delta ring and delta shell
Luis F. Castillo-Sánchez, Julio C. Gutiérrez-Vega
  • Online ISSN 1943-2909
  • Print ISSN 0002-9505

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