© CNRS Images media - 2003

Electrostatics

Reference

1111

Duration

00:19:00

Production year

2003

Versions

Original material

Procédés audiovisuels

SD
4/3
Color
Sound

Résumé

A session with a group of high-school students in the electrostatics room of the Palais de la découverte. The experiments shown involve high voltage (300,000 volts) but are not dangerous because the current is very weak. The current is active only during the charging and discharge of the materials used.

Two girls positioned on a platform with a high electrostatic potential are not in danger, because they are isolated from the outside. Each one's hair, which is charged, repels that of the other, and stands up on their heads. Then they move into a metal mesh cage (a Faraday cage), where they are in a neutral electric field and their hair stops standing on end because they are no longer charged.

Personnalité(s)

Scientific topics

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