Duke University

When Nano May Not Be Nano

(PhysOrg.com) -- The same properties of nanoparticles that make them so appealing to manufacturers may also have negative effects on the environment and human health. However, little is known which particles may be harmful. ...

dateSep 13, 2009 in Bio & Medicine
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Fine-tuning Stephen Hawking's theory of mass

(Phys.org) —If you want to know your body's mass, you hop on a scale and watch the needle swing. But if you want to know the mass of a region out in space, there's no cosmic equivalent—the best you can do is consult a ...

dateMar 18, 2014 in General Physics
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