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August 2016, Volume 84 #8

August 2016 Issue, Volume 84, No. 8

This month's cover image is from the featured paper, Numerical solutions of reaction-diffusion equations: Application to neural and cardiac models by Yanyan Claire Ji and Flavio H. Fento.  The paper describes the implementation of the explicit Euler, Crank-Nicolson, and implicit alternating direction methods for solving partial differential equations and apply these methods to obtain numerical solutions of three excitable-media models used to study neurons and cardiomyocyte dynamics. The authors discuss the implementation, accuracy, speed, and stability of these numerical methods

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Oersted Lecture 2014: Physics education research and teaching modern Modern Physics Dean Zollman, Oersted Awardee. DOI: 10.1119/1.4953824

Periodic roads and quantized wheels by Eduardo de Campos Valadares DOI: 10.1119/1.4955148

Spatial curvature, spacetime curvature, and gravity by Richard H. Price DOI: 10.1119/1.4955154

Particle plasmons: Why shape matters by William L. Barnes DOI: 10.1119/1.4948402

Precise determination of the refractive index of suspended particles: light transmission as a function of refractive index mismatch by J. P. McClymer DOI: 10.1119/1.4948993

The external magnetic field created by the superposition of identical parallel finite solenoids by Melody Xuan Lim and Henry Greenside DOI: 10.1119/1.4948603

Gauge transformations and conserved quantities in classical and quantum mechanics by Bertrand Berche, Daniel Malterre and Ernesto Medina DOI: 10.1119/1.4955153

Numerical solutions of reaction-diffusion equations: Application to neural and cardiac models by Yanyan Claire Ji and Flavio H. Fenton DOI: 10.1119/1.4953167


Effective variations of peer instruction: The effects of peer discussions, committing to an answer, and reaching a consensus by Nathaniel Lasry, Elizabeth Charles and Chris Whittaker  DOI: 10.1119/1.4955150


Comment on "The geometrical significance of the Laplacian" [Am. J. Phys. 83, 992–997 (2015)] by David J. Siminovitch DOI: 10.1119/1.4953842

Additional Resources

In celebration of the 100th Anniversary of Einstein's Theory of General Relativity, AAPT created a collection of articles previously published in AJP and TPT.  If you missed it earlier in the year, you can still enjoy it.