PETER MENZEL / SCIENCE PHOTO LIBRARY PETER MENZEL / SCIENCE PHOTO LIBRARY
Demonstration of a Tesla coil. Bill Wysock sits on top of a metal disc, electricity from a Tesla coil flowing over him to illuminate a light bulb and to send a discharge into the sky. The Tesla coil is an air-core transformer linked to a capacitor. It produces very high voltage electricity at a high frequency. Lower frequency electricity would pass through Wysock's body, doing considerable damage. Photographed at Monrovia in California, USA.
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