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American Journal of Physics, April 2017 issue

AAPT announces that Richard Price, Massachusetts Institute of Technology, will assume the position of Editor for the  American Journal of Physics in September 2017, following the term of David P. Jackson.
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April 2017 Issue, Volume 85, No. 4

The profile of an oil-water interface in a spin-up rotating cylindrical vessel by Zixiang Yan, Lu Sun, Jinghua Xiao, and Yueheng Lan. DOI: 10.1119/1.497512510.

The dynamics of a two-layered rotating liquid at low angular velocity in a cylindrical container is explored, both experimentally and theoretically, using an oil-water system. In the two-layered liquid, a transient concave down paraboloid interface, containing undulations, is observed before the final, stable concave up paraboloid interface develops. A simple yet effective model is developed to explain the observed profile dynamics, in which the predicted maximal height of the paraboloid agrees well with experimental measurements over a fairly large range of rotation speeds.

Papers

Resource Letter RBAI-1: Research-Based Assessment Instruments in Physics and Astronomy by Adrian Madsen, Sarah B. McKagan, and Eleanor C. Sayre. DOI: 10.1119/1.4977416

Relating Brownian motion to diffusion with superparamagnetic colloids by A. Darras, J. Fiscina, N. Vandewalle, and G. Lumay. DOI: 10.1119/1.4975382

The profile of an oil-water interface in a spin-up rotating cylindrical vessel by Zixiang Yan, Lu Sun, Jinghua Xiao, and Yueheng Lan. DOI: 10.1119/1.4975125

The Ewald sphere construction for radiation, scattering, and diffraction by Yen Lee Loh. DOI: 10.1119/1.4973369

Measurement of the second-order coherence of pseudothermal lightby Tom A. Kuusela. DOI: 10.1119/1.4975212

A method for measuring magnetic fields in sunspots using Zeeman-broadened absorption lines by Benjamin Oostra. DOI: 10.1119/1.4975109

Developing a project-based computational physics course grounded in expert practice by Christopher J. Burke, and Timothy J. Atherton. DOI: 10.1119/1.4975381

Deep learning for teaching university physics to computers by Jackson P. Davis, and Watt A. Price. DOI: 10.1119/1.4977792

Using Statcast to lift the discussion of projectile motion by P. B. Siegel. DOI: 10.1119/1.4975302

Early Days of X-ray Crystallographyc by Jens Als-Nielsen. DOI: 10.1119/1.4967849

NOTES AND DISCUSSIONS

Another comment on “The physical origin of torque and of the rotational second law” [Am. J. Phys. 83, 121–125 (2015)] by Igor N. Gorbatyy, and Alexander A. Tarusov. DOI: 10.1119/1.4975383

BOOKS RECEIVED

Journal of Physics 85, 318 (2017); DOI: 10.1119/1.4977733


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