American Journal of Physics

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Current Issue

Volume 91,

Issue 10,

October 2023

Focus and Coverage

The American Journal of Physics publishes papers that will support, inform, and delight a diverse audience of college and university physics teachers. Contents include novel approaches to classroom and laboratory instruction, insightful articles on topics in classical and modern physics, apparatus notes, historical or cultural topics, book reviews, resource letters, and award talks.

Editor

Beth Parks

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Featured Articles

October 01 2023

All objects and some questions

Charles H. Lineweaver, Vihan M. Patel

We present an overview of the thermal history of the Universe and the sequence of objects (e.g., protons, planets, and galaxies) that condensed out of the background as the Universe expanded and ...

August 01 2023

An experimental demonstration of level attraction with coupled pendulums

Chenyang Lu, Bentley Turner et al.

We have experimentally demonstrated dissipative coupling in a double pendulum system through observation, which shows three distinctly different patterns of motion over the accessible parameter ...

August 01 2023

Infinite-fold energy degeneracy in 2D square lattices of magnetic spheres

Kyongwan Kim

We show that a two-dimensional square lattice of magnets can be studied by placing small cylindrical neodymium magnets inside plastic spherical shells and floating them on water, leaving their ...

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Editor's Picks

October 01 2023

Scattering of identical particles by a one-dimensional Dirac delta function barrier potential: The role of statistics

P. R. Berman, Alberto G. Rojo

Scattering of non-interacting, identical bosons or fermions by a one-dimensional Dirac delta function barrier potential underlines the importance of the role of statistics (that is, whether the ...

October 01 2023

Treating disorder in introductory solid state physics

Dunkan Martínez, Yuriko Baba et al.

Introductory textbooks in solid state physics present solvable models for illustrating the occurrence of allowed bands and forbidden gaps in the energy spectrum of Bloch electrons. However, the ...

October 01 2023

An undergraduate physics experiment to measure the frequency-dependent impedance of inductors using an Anderson bridge

Andrew James Murray, Carl Hickman

One of the most accurate ways to measure the impedance of an electrical component is to place it in a bridge that is then balanced. The most familiar bridge in an undergraduate laboratory is the ...

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