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cover of the October 4 Science News

Feature

Extreme Measures

Atom interferometry's precision could make it the Swiss Army knife of physics

In spring 2010, the military plans to embark on a road trip across the country to test a new way of navigating. Instead of taking a path marked by a dog-eared road atlas, a compass, or even global positioning satellites, the vehicle will follow one mapped by supercold cesium atoms.

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