Archive: 09/1/2010

Sensor measures yoctonewton forces fast

(PhysOrg.com) -- Physicists at the National Institute of Standards and Technology have used a small crystal of ions (electrically charged atoms) to detect forces at the scale of yoctonewtons. Measurements ...

dateSep 01, 2010 in Nanophysics
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Kids with sports concussions need time out

Between 1997-2007, the number of emergency room visits for concussions doubled in children ages 8-13 who play organized sports. Part of the reason is greater awareness, according to Mark E. Halstead, MD, assistant ...

dateSep 01, 2010 in Health
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