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November 2010

Volume 63, Issue 11

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ARTICLES

Select this Article		A time‐symmetric formulation of quantum mechanics Yakir Aharonov, Sandu Popescu, and Jeff Tollaksen


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	+ -	Show Topic Quantum mechanics allows one to independently select both the initial and final states of a single system. Such pre‐ and postselection reveals novel effects that challenge our ideas about what time is and how it flows.

Select this Article		The physics of boron nitride nanotubes Marvin L. Cohen and Alex Zettl


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	+ -	Show Topic As synthesis techniques mature, BN nanotubes are likely to be increasingly valuable in fundamental physics studies and find application in a variety of forms—from dyeable, neutron‐absorbing fabrics to high‐temperature catalysts and photovoltaic devices.

Select this Article		String theory and the real world Gordon Kane


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	+ -	Show Topic Although string theory is formulated in 10 or 11 dimensions, specific string theory solutions make unambiguous, testable predictions about our four‐dimensional universe.

Articles

Select this Article FREE		Chandrasekhar’s role in 20th-century science Freeman Dyson

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	+ -	Show Topic Once the astrophysics community had come to grips with a calculation performed by a 19-year-old student sailing off to graduate school, the heavens could never again be seen as a perfect and tranquil dominion.

LETTERS

Select this Article FREE		A broader picture of Rutherford's geophysicists David Stevenson, Michael Rochester, Nick Rogers, Cinna Lomnitz, and Gregory Good


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Select this Article FREE		Roots and risks of total nuclear disarmament Alexander DeVolpi, Jonathan Katz, and Sidney Drell


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Select this Article FREE		Cold fusion and reproducibility Fred McGalliard, Scott R. Chubb, and Bernard J. Feldman


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Select this Article FREE		A new index for measuring scientists' output J. Richard Gott, III

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Select this Article FREE		Remembering Howard Voss Robert J. Reiland


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Letters

A broader picture of Rutherford’s geophysicists

Select this Article		A broader picture of Rutherford’s geophysicists Michael Rochester

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SEARCH AND DISCOVERY

Select this Article		Optical manipulation of light‐absorbing particles takes to the air Ashley G. Smart

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	+ -	Show Topic An effect known as photophoresis sends carbon‐coated microspheres traveling unprecedented distances inside a beam of light.

Select this Article		Using the friendship paradox to sample a social network Mark Wilson


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	+ -	Show Topic When applied to random nodes in a network, the statement “Your friends have more friends than you do” has predictive power.

Select this Article		Relativistic effects seen at everyday distances and speeds Barbara Goss Levi

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	+ -	Show Topic Recent results highlight the precision reached by the latest optical clocks.

Select this Article		Physics Update Stephen G. Benka, Johanna Miller, Jermey N. A. Matthews, Steve K. Blau, Charles Day, and R. Mark Wilson

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ISSUES AND EVENTS

Select this Article FREE		Incentive prizes reinvented to solve problems Toni Feder


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	+ -	Show Topic The public and private sectors are recognizing that in casting a wide net and paying only for success, incentive prizes have the potential to spur breakthroughs.

Select this Article FREE		NIH is first to sponsor research on a ‘national laboratory’ in space David Kramer


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	+ -	Show Topic Three biomedical research projects are selected to fly on the International Space Station, but NASA can't say when.

Select this Article FREE		DOE helps small energy‐technology firms through the ‘valley of death’ David Kramer


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Select this Article		News Notes Toni Feder


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Select this Article		Recently on Physics Today Online Charles Day


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BOOKS

Select this Article		Galileo Galilei and Motion: A Reconstruction of 50 Years of Experiments and Discoveries Roberto Vergara Caffarelli and Paolo Palmieri, Reviewer


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Select this Article		Predicting the Unpredictable: The Tumultuous Science of Earthquake Prediction Susan Hough and Roger Musson, Reviewer


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Select this Article		The Life of Stars: The Controversial Inception and Emergence of the Theory of Stellar Structure Giora Shaviv and Robert Deupree, Reviewer


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Select this Article		The Logical Leap: Induction in Physics David Harriman and Ulrich Gerlach, Reviewer


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Select this Article FREE		New Books


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NEW PRODUCTS

Select this Article FREE		Focus on materials Andreas Mandelis


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OBITUARIES

Select this Article FREE		Aage Niels Bohr Ben Mottelson and Ole Ulfbeck


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Select this Article FREE		Michael Stephen Feld Ramachandra Rao Dasari, Daniel Kleppner, and Charles H. Holbrow


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QUICK STUDY

Select this Article		Jammed particles, from sandy beaches to sunscreens Jasna Brujic


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BACK SCATTER

Select this Article		The 2010 Antarctic ozone hole


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November 2010

Volume 63, Issue 11

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