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Table of Contents August 2006

Feature Articles

Ultrasensitive searches for the axion
The axion is a hypothetical particle with a mass possibly a trillion times lighter than an electron and exceedingly small couplings to ordinary matter. Yet experiments may soon detect its presence, either as dark matter or as a component of solar flux — Karl van Bibber and Leslie J Rosenberg

Stories from the early days of quantum mechanics
A colloquium delivered to the University of Toronto physics department on 5 April 1979 by the master of molecular beams offers a fresh look at an earlier era — Isidor Isaac Rabi (transcribed and edited by R. Fraser Code)

Improving students' understanding of quantum mechanics
To address the misconceptions that students typically hold concerning quantum mechanics, instructors should couple computer-based visualizations with research-based pedagogical strategies — Chandralekha Singh, Mario Belloni, and Wolfgang Christian


Physics Today cover - Hurricane thermodynamics
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cover: Hurricane Diana, as photographed on 11 September 1984. The satellite image was obtained as the hurricane was intensifying; eventually Diana achieved sustained winds of about 210 km/h. Atlantic hurricanes usually form between June and November, when the ocean is warm, humidity is high, and atmospheric conditions are favorable. To learn more about how they develop, including the role of the greenhouse effect, turn to the Quick Study by Kerry Emanuel on page 74. (Image from the National Oceanic and Atmospheric Administration's online photo library.)

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