Archive: 3/09/2009

Optical atomic clock becomes portable

You imagine a clock to be different -- yet the optical table with its many complicated set-ups really is one. Optical clocks like the strontium clock in the Physikalisch-Technische Bundesanstalt (PTB) in Braunschweig could ...

dateSep 03, 2009 in General Physics
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Weeds that reinvented weediness

Flowering plants are all around us and are phenomenally successful—but how did they get to be so successful and where did they come from? This question bothered Darwin and others and a paper published in the September ...

dateSep 03, 2009 in Plants & Animals
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