The Physics Teacher
October 2025
Volume 63 Issue 7
This Month's cover...portrays a caged tetraquark, an exotic particle composed of two quarks and two antiquarks, instead of the usual three quarks of regular matter. Murray Gell-Mann’s model permits the existence of such curious particle states, and Don Lincoln’s article, "Exotic Hadrons: A Subatomic Bestiary,” conveys the latest news in the search for definitive evidence of such unusual creatures.
Columns
AI Physics Tools, And the Survey Says..., Astronotes, Fermi Questions, Figuring Physics, For the New Teacher, iPhysicsLabs, Just Physics, Little Gems, Physics Challenge for Teachers and Students, Talkin' Physics, Technology In The Classroom, Tricks of the Trade, TCY Tidbits, Visual Physics, and Websights.
AWARDS
AAPT Awards. DOI: Phys. Teach. 63, 528 (2025) https://doi.org/10.1119/5.0299449
PAPERS
An Interesting Shadow Observed during a Solar Eclipse by Theodore Foster; John Mottmann; Willem van Wyngaarden. DOI: 10.1119/5.0196647
Exotic Hadrons: A Subatomic Bestiary by Don Lincoln. DOI: 10.1119/5.0289989
Newton and Hooke on the Nature of Light and Scientific Knowledge by Scott W. Bonham. DOI: 10.1119/5.0213477
Analyzing New Planetary Systems at School: Applications of Newton’s Law of Universal Gravitation and Kepler’s Third Law by R. Montecinos; C. Hernández; I. Fuentes-Morales; F. Alarcón; I. Benito; L. Laroze; S. Pérez. DOI: 10.1119/5.0192450
A Baseball Bat and Ball Collision Experiment for Students by Rod Cross. DOI: 10.1119/5.0219036
Thinking Hard About Physics Before Calculating: An Example from Pendulum Physics by Zhiwei Chong (冲志伟). DOI: 10.1119/5.0164034
Three Engaging Qualitative Demonstrations for Introducing Electrostatics Concepts by Wei Zhuang; Jiaxuan Wang; Jiasheng Wu; Shouping Tang; Yan Zhang; Caojin Yuan; Jiawei Song. DOI: 10.1119/5.0176816
Introducing Quantum Entanglement and Superposition to Secondary School Students Using Portable, Hands-on Exhibits
In Special Collection: Quantum Topics in the Introductory Physics Classroom
by Luis Mendoza; Ketevan Akhobadze; Doga Kurkcuoglu. DOI: 10.1119/5.0226407
Measuring the Breaking Strength of Steel Guitar Strings by Mark French; Debbie French. DOI: 10.1119/5.0209482
Re-creating an 18th-Century Parabolic Motion Demonstration by Thomas B. Greenslade, Jr. DOI: 10.1119/5.0203427
Inferring Trajectories of Floor-Bound Objects Using Video Analysis by David Kordahl. DOI: 10.1119/5.0219972
Easily Measuring the Solar Rotation Rate in June and December by Javier Vaquero-Martínez; Víctor M. S. Carrasco; José M. Vaquero. DOI: 10.1119/5.0175402
First-Hand View of the Solar Maximum by Václav Šebelík. DOI: 10.1119/5.0180327
Temperature-Dependent Electrical Resistance of Metals and Semiconductors Using Waste Aluminum Wrapper by Vinit Srivastava; Gopesh K. Bajre; Amit Kumar Sharma; Rahul Vaish. DOI: 10.1119/5.0185467
Finding Mass and Pressure of Air in an Inflated Balloon: The Misleading Experiment with Two Balloons and a Scale Revisited by Oscar R. Lozano; Jordi Solbes. DOI: 10.1119/5.0167291
Investigating Resonance in Paper Pipes and a Flameless Rubens Tube with a Smartphone by Praveen Pathak; Mamatha Ramanjineyulu Maddur; Arnab Bhattacharya. DOI: 10.1119/5.0200537
Teaching an Acoustics Lab Remotely during the Pandemic and Beyond by Saman Moghimi-Araghi. DOI: 10.1119/5.0204272
How Many Acres of Potatoes Does a Society Need? Using Food and Historical Claims in an Energy Context by Nathan T. Moore. DOI: 10.1119/5.0193574
Toy Metallophone: Harmony or Beauty? An Opportunity to Learn Physics by Francisco Jose Torcal-Milla. DOI: 10.1119/5.0174261
Effective Focal Length of a Two-Lens System by Pattarapon Tanalikhit; Thanabodi Worakitthamrong; Wittaya Kanchanapusakit. DOI: 10.1119/5.0206775
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