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November 9th 2005

Electrons with no rest mass! (Maybe)

http://physicsweb.org/articles/news/9/11/6/1

"Two teams of physicists have discovered previously unseen exotic behaviour in sheets of carbon atoms. The teams have shown that electrons move through the sheets as if they have no rest mass. They have also observed a minimum value of conductivity for the sheets and an unusual form of the quantum Hall effect" (Nature 438 197 and 201).