Nam June Paik - Magnet TV (1963-65)
"«Magnet TV» was developed relatively late by Paik. By then he had already engaged in numerous complex operations on the inner-workings of television sets, but was yet to consider how magnets applied from outside were also well-suited to altering the electromagnetic flow of electrons.[…] At first Paik worked with only a horseshoe-shaped electromagnet and a degausser, used by technicians to deactivate the television screen’s state of being charged.[…] The magnet’s force of attraction hindered the cathode rays from filling the screen’s rectangular surface. This pushed the field of horizontal lines upward thus creating baffling forms within the magnet’s gravitational field. If the magnet maintained its position, the picture remained stabile—apart from minimal changes caused by fluctuations in the flow of electricity. Moving the magnet caused endless variations on the forms. "
(Source: Edith Decker, Paik Video, Cologne, 1988, p. 60ff.)