Electrostatic Field Lines

Electrostatic Field Lines

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Credit: TED KINSMAN/SCIENCE PHOTO LIBRARY

Caption: Electrostatic field lines around a point charge and a cylinder. The left point is charged to -30,000 volts while the right point has a potential of +30,000 volts. Of special importance is the lack of fields showing inside the cylinder, which acts as a Faraday cage, shielding the enclosed area from any external electrical fields. This is the classic case of no electrical fields inside an electrical conductor. Part of a series showing different charging conditions. The electric fields are shown by placing the two charged objects in a pan filled with cooking oil and pepper flakes, which align in the electric field, allowing visualization of the field.

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Keywords: charge configuration, demo, demonstration, e fields, e-m physics, electric fields, electricity, electrostatic, enclosed charge, faraday, faraday cage, faraday shield, fields, gauss, gauss'ss law, gaussian surface, gausss, high potential, high voltage, law, michael faraday, parallel plates, physics, plates, potential, similar charges, test charge, unlike charges, voltage

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