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Elizabethan Geometry

3 October 2008
A disk of living tissue forms surprising shapes if its circumference grows faster than its diameter, according to a mathematical analysis.
article link PRL (8 August 2008)
article link PRL (to be published)
article link videos
Elizabeth I

Journey to the Center of the Neutron

26 September 2008
A surprising negative charge at the center of the neutron arises from an abundance of negatively-charged quarks with very high speeds.
article link PRC (September 2008)
neutron charge distributions

To Slide or Not to Slide

19 September 2008
When moved across a surface, some nanoscale metallic islands show frictional resistance, while others do not, adding new support to a theory that attributes friction to trapped impurity atoms.
article link PRL (19 September 2008)
antimony islands on graphite
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Click on APS Article to see the research paper described in the story.