Comment: Found a better article

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Found a better article

Here's the Cliff Notes version. This is the first time "negative temperatures" have been attained in a gas. [Neg. temps in other modes were produced as early as 1957. -jd] They did it with gas by constraining the individual atoms of potassium into carefully calculated lattice patterns by means of magnets and lasers.

http://www.nature.com/news/quantum-gas-goes-below-absolute-z...

Update: I found the press release for the non-scientific media. It is excellent.

http://www.quantum-munich.de/fileadmin/media/media/Negative_...

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