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June 2011

Volume 64, Issue 6

Cover: This miniature motor assembly, fabricated by lithographic techniques employing x-ray beams from a synchrotron light source, illustrates one of the great variety of uses accelerator beams have found in industry. (The penny is just for scale.) The article by Robert Hamm and Marianne Hamm on page 46 surveys the use of electron, ion, neutron, and x-ray beams generated by industrial accelerators for fabrication, sterilization, nucleosynthesis, monitoring, and other purposes. (Photo courtesy of Honeywell Federal Manufacturing & Technologies.)

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Articles

Select this Article		Painting with drops, jets, and sheets Andrzej Herczyński, Claude Cernuschi, and L. Mahadevan


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	+ -	Show Topic A fluid dynamics analysis of Jackson Pollock’s technique opens his and other artists’ work to quantitative exploration.

Select this Article FREE		Listening in on the listening brain Nina Kraus


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	+ -	Show Topic The measured response of the auditory brainstem to complex aural stimuli does more than reveal hearing acumen. It also gives insight into how experience molds the perception of sound.

Select this Article		The beam business: Accelerators in industry Robert W. Hamm and Marianne E. Hamm


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	+ -	Show Topic Particle acceleration techniques originally developed for physics research have found a dazzling variety of uses in manufacturing and commerce.

Letters

Recollections of Chandra

Select this Article FREE		Recollections of Chandra Russell J. Donnelly


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Select this Article FREE		Recollections of Chandra Edward Collett


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Annotating the history of rotation ideas

Select this Article FREE		Annotating the history of rotation ideas Frank Lowes


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A last word on scientists’ last word

Select this Article FREE		A last word on scientists’ last word Murray Peshkin


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Search and Discovery

Select this Article		Martian icecap hosts a massive CO₂ deposit Johanna L. Miller


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	+ -	Show Topic Radar data reveal a solid reservoir that contains almost as much carbon dioxide as the planet’s entire atmosphere.

Select this Article		Clouds of atoms with opposite spins bounce off one another Barbara Goss Levi


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	+ -	Show Topic A gas of strongly interacting ultracold atoms offers extremely high resistance to the flow of spin; its spin diffusion reaches a minimum, universal value.

Select this Article		A mirror gives light an extra twist Ashley G. Smart


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	+ -	Show Topic The contorted optical field aids the differentiation of chiral molecules, a result that confirms ideas first proposed last year.

Physics Update

Select this Article		CERN collider achieves record collision rate Bertram M. Schwarzschild


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Select this Article		Resolving the tension between droplets and solids Jermey N. A. Matthews


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Select this Article		Mending polymers with light Richard J. Fitzgerald


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Select this Article		New limit on putative dark-matter particle Charles Day


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Select this Article		Simple molecules mimic double slits Ashley G. Smart


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Issues and Events

Select this Article FREE		Singapore applies itself to science Charles Day


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	+ -	Show Topic Despite its small size, the Lion City has become an influential exemplar of investing in science to promote industry.

Select this Article		With NASA out, Europe mulls building a gravitational-wave observatory on its own David Kramer


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	+ -	Show Topic A successor to the Laser Interferometer Space Antenna will compete with two other large space missions for European Space Agency sponsorship. Short on cash, NASA’s astrophysics program will begin reassessing its future missions.

Select this Article FREE		Caribbean Science Foundation sets sail Jermey N. A. Matthews


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	+ -	Show Topic Initial investment for the funding agency will come largely from the region’s diaspora scientists, from corporate sponsors, and from development banks.

Select this Article		US budget pact signals end to R&D growth David Kramer


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	+ -	Show Topic Additional spending cuts loom as lawmakers consider competing budget blueprints from Obama and the Republicans.

News notes

Select this Article		Surveying physicists Toni Feder


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Books

Select this Article		Group Theory: A Physicist’s Survey Robert Gilmore, Reviewer


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Select this Article		Dark Energy: Theory and Observations; Dark Energy Joshua Frieman, Reviewer


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Select this Article		Plasma Physics: An Introduction to Laboratory, Space, and Fusion Plasmas Michael Brown, Reviewer


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Select this Article		Elegance in Science: The Beauty of Simplicity Robert C. Bishop, Reviewer


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Select this Article FREE		New books


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New Products

Select this Article FREE		Focus on sensors and detectors


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	+ -	Show Topic The descriptions of the new products listed in this section are based on information supplied to us by the manufacturers. PHYSICS TODAY can assume no responsibility for their accuracy. For more information about a particular product, vis the website at the end of the product description.

Obituaries

Select this Article FREE		Benoit Mandelbrot Richard Taylor


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Select this Article FREE		Allan Rex Sandage Michael Rowan-Robinson


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Quick Study

Select this Article		A molecular merry-go-round Bretislav Friedrich


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	+ -	Show Topic For almost 80 years the marvels of the subatomic world have been revealed through collisions of charged particles confined in circular accelerators. Now we are beginning to build analogous machines that confine bunches of neutral molecules.