Add Yahoo as a preferred source to see more of our stories on Google. A Penn State-led study reveals the hidden chain reaction that starts lightning, linking electrons, X-rays, and gamma rays. (CREDIT ...

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A green spectacle. With protective eyewear, ISTA PHD student Andrea Stöllner takes a glimpse into the experimental chamber (in the foreground) where two laser beams trap a single particle. One ...

“We explained how photoelectric events occur, what conditions need to be in thunderclouds to initiate the cascade of electrons, and what is causing the wide variety of radio signals that we observe in ...

The research was led by Victor Pasko, a professor of electrical engineering in the Penn State School of Electrical Engineering and Computer Science. His team combined advanced mathematical modeling ...