This is the third appearance of a list of blurbs that would help readers/viewers decide quickly which articles are most likely to be most useful and appropriate for them.

David L. Sidebottom

The speed of sound in corrugated pipes is roughly 5% slower than that measured in open air, thus providing a unique opportunity for teaching students in upper-division undergraduate labs tangible experimental skills and to think like a physicist.

Catherine Hirshfeld Crouch and John W. Hirshfeld, Jr

The “pedagogical logic” of a lab and theory course on electrocardiography. The article and course require only an introductory background in electric fields, introduce the idea of the ECG determination of the heart's dipole, and are meant very explicitly for students in the life sciences.

Ernesto Momox and Charby Ortega

Available sensor support for iOS and Android can be interfaced with MATLAB mobile to give students their own real-time data-taking and plotting equipment.

Alexandru Maries, Ryan Sayer and Chandralekha Singh

In work useful for instructors in quantum mechanics, advanced undergrads and grad abilities are compared in transferring understanding between contexts. The Mach Zehnder interferometer is explored first, followed by the double slit experiment.

Ashok K. Singal

The special relativistic change in length of a rod as it is accelerated from one inertial frame to another depends on details of the acceleration process. But the final result for the length of the rod is consistent with the Lorentz contraction formula. This article is appropriate for introductory courses.

William H. Press

A quantum information scenario in the spirit of Mermin's illustration of a Bell inequality casts Eve in the role of exploring whether classical ideas or hidden variables can explain the statistics of a Stern-Gerlach-like experiment. Supplementary Mathematical and Python codes are included for simulation of the statistics. The article can be read by an advanced undergraduate with guidance on a few of the issues.

B. Cameron Reed

A 1943 graph depicting the time evolution of physical conditions within an exploding nuclear weapon is used as an aid to the understanding of the physics of a nuclear explosion.

Nihar Gupte and Imre Bartos

Images are created that show how a kilonova (an optical afterglow of the merger of two neutron stars) would look in the sky if it occurred 1000 light years from Earth. The techniques described here will be of interest not only to scientists but also to professionals in digital scientific art, planetarium owners, etc.

Marco Moriconi

A derivation of the one-dimensional quantum harmonic oscillator is given, which illustrates different calculational techniques.

Aditi Sharma, Swapna Gora, Jithin Bhagavathi and O.S.K.S. Sastri

Numerical solutions of single-particle neutron and proton states are calculated for doubly magic nuclei, using a mean-field potential and sine-wave basis funtions. The spin-orbit term plays an important role.

N. Pelle, L. Ehinger, C. R. Zaug, and W. J. Kim

The design, parts and construction details are given for a simple and inexpensive, but very sensitive autocollimator for use in advanced undergraduate labs. Included are descriptions of interesting applications.