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Van de Graaff generator & Faraday cage, Boston

Van de Graaff generator & Faraday cage, Boston

T194/0274

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Credit

PETER MENZEL / SCIENCE PHOTO LIBRARY 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.

Release details

Model release not required. Property release not required.

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