Gas magnets

Published: Saturday 31 October 2009


A giant unseen force billows out in all directions. It draws cars and buildings. The sci-fi explanation is it is a transparent, magnetic gas. Research corroborates this: cold gases can turn into magnets. An infrared laser beam was fired at a supercooled cloud of lithium atoms. The cloud grew bigger, then shrunk. When the atoms were released they expanded fast—properties of a magnetic material

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