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cover: Fifty years have passed since Edward Lorenz published his discovery of a surprising behavior now known as chaos. With a simple, three-equation weather model, Lorenz demonstrated that even fully deterministic systems can behave in ways that are intrinsically unpredictable. Shown here is a simulation of one of the model’s iconic solutions—the Lorenz attractor—plotted as a trajectory in phase space. To learn more about Lorenz’s discovery and subsequent developments in chaos theory, turn to page 27. (Image courtesy of Stefan Ganev.)

Select this Article FREE		Chaos at fifty Adilson E. Motter and David K. Campbell


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	+ -	Show Topic In 1963 an MIT meteorologist revealed deterministic predictability to be an illusion and gave birth to a field that still thrives.

Select this Article FREE		Niels Bohr between physics and chemistry Helge Kragh


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	+ -	Show Topic Bohr’s atomic theory was addressed as much to chemical problems as to physical ones. But the great scientist’s intent to establish a new framework for atomic and molecular chemistry was less successful, and was unacknowledged by most chemists.

Select this Article		Getting a grip on the electrical grid Scott Backhaus and Michael Chertkov


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	+ -	Show Topic As our electrical grid systems become smarter and more autonomous, they require greater control technologies to protect them from failing.

Select this Article FREE		Rewards and risks for physicist entrepreneurs Peter Foukal


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Select this Article FREE		Rewards and risks for physicist entrepreneurs Orville R. Butler and R. Joseph Anderson


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BROWSE VOLUMES

May 2013

Volume 66, Issue 5

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Select this Article FREE		Beyond the classical view of atoms David L. Rosen


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Select this Article FREE		Beyond the classical view of atoms Chuck Gallo


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Select this Article FREE		An early start for superfluid applications in geodesy William E. Carter


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Select this Article		Graphene yields evidence of atomic collapse Ashley G. Smart


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	+ -	Show Topic A relativistic phenomenon predicted for highly charged nuclei has been seen in a tabletop experiment.

Select this Article		Gigantic IceCube tightens limits on theories that predict dark-matter particles Bertram M. Schwarzschild


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	+ -	Show Topic The more one looks for WIMPs without finding them, the greater are the constraints on supersymmetric extensions of standard particle theory.

Select this Article FREE		Birds can recognize a model’s reproduction of their own songs Johanna L. Miller


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	+ -	Show Topic An interdisciplinary collaboration integrates physical, acoustic, and biological approaches to the study of birdsong.

Select this Article		A seismometer in orbit R. Mark Wilson


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Select this Article		Mesoporous crystals Richard J. Fitzgerald


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Select this Article		A vortex knot caught on camera Ashley G. Smart


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Select this Article		When dust slams into spacecraft Charles Day


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Select this Article		West Coast national labs trying to cope with roller-coaster budget picture David Kramer


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	+ -	Show Topic Complying with sequestration will entail pay cuts and stalled construction projects and will halt new research programs.

Select this Article FREE		China prepares to spend billions on science and technology Toni Feder


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	+ -	Show Topic With its strong economy, the country wants to play a bigger role on the world science stage.

Select this Article		Carbon capture may be a ways off, but ARPA–E is working on it David Kramer


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	+ -	Show Topic Several technologies are aimed at minimizing the cost of removing CO₂ during coal burning. But their deployment will require subsidies or a price on carbon emissions.

Select this Article FREE		Atoms in Intense Laser Fields Philip H. Bucksbaum, Reviewer


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Select this Article		GROWing abroad Toni Feder


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Select this Article		Bassi–Veratti archives online Toni Feder


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Select this Article FREE		Fundamentals of Condensed Matter and Crystalline Physics: An Introduction for Students of Physics and Materials Science Ivan Smalyukh, Reviewer


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Select this Article FREE		An Introduction to Celestial Mechanics Arlin Crotts, Reviewer


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Select this Article FREE		String Theory and Particle Physics: An Introduction to String Phenomenology Senarath P. de Alwis, Reviewer


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Select this Article FREE		Focus on lasers and imaging Andreas Mandelis


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Select this Article FREE		Alfred Kenneth Mann Eugene W. Beier and Hugh H. Williams


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Select this Article FREE		The care and feeding of an Antarctic telescope Michael C. B. Ashley


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	+ -	Show Topic Antarctica’s Dome A region is an excellent site for housing telescopes that look at terahertz radiation. But getting the telescopes down to the continent and maintaining them once they’re in place is a challenge.

Select this Article		Separating stem cells by shear force


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