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Russ's VDG

Surface discharges on a wood block

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Surface discharges on a wood block
Surface discharges on wood block. The bright red color only happened when the discharge occurred over a dark grain in the wood. After doing some research and more observations, I found that the red color is caused by the discharge occurring just below the surface of the wood.
Posted by Russ on May 14, 2015 Full Size| Slideshow

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