News tagged with pencil

Pencil test for pipeline cracks

It is impossible to see when the "lead" in a pencil cracks within the pencil, but an acoustic sensor can "hear" the change in the way the pencil vibrates. Now, researchers in China have reported in the International Journal ...

dateJun 08, 2016 in Engineering
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Scientists Control Plasma Bullets

( -- On the nanoscale, things aren’t always what they seem. What first looked like a continuous plasma jet has turned out to be a train of tiny, high-velocity plasma bullets. Using a camera with an exposure ...

dateFeb 27, 2009 in Plasma Physics feature
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