Friday, November 5, 2010

Cloaking Effect In Atoms Baffles Scientists

Finding mysterious positron sources in the Milky Way (Image: Gerhard Hüdepohl/ESO)

From New Scientist:

Atoms called positronium inexplicably scatter off gas particles as if they were lone electrons, even though they contain an anti-electron as well. The finding hints that engineers could use the well-known scattering properties of electrons as a rule of thumb in designing future medical scanners that employ positronium. It could also help interpret puzzling astronomical observations.

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