Van de Graaff generator and Faraday cage

Van de Graaff generator and Faraday cage

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Credit: PETER MENZEL/SCIENCE PHOTO LIBRARY

Caption: Safety of a Faraday cage. Amid a flurry of electric discharge, a museum worker demonstrates the safety of a Faraday cage. The cage is designed such that no discharges will reach inside. The distance between the bars means that a discharge will always find it easier to hit a bar than pass in between to another object. The person inside is therefore protected. The discharge is created by a vast Van de Graaff generator (columns and spheres) behind the cage, with a potential difference of 2.5 million volts. The generator was built by Van de Graaff in 1931, and is now at the Boston Museum of Science, USA.

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Keywords: artificial, electrical, electricity, energy, faraday cage, generator, graaf, graf, graff, industry, lightning, man-made, museum, physics, static electricity, technology, van de gra, van de graaff, van de graaff generator

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