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Stories about: Penning traps

Super-Heavy Nobelium Isotopes Weighed Researchers in Germany were recently able to use a special trap so as to collect direct measurements on the weight of no less than three isotopes of the super-heavy chemical element nobelium. While the heaviest stable element to appear in nature is uranium, science was able to synthesize as many as 25 additional chem... 11 February 2010 04:48 GMT