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7.83 Hz

As a result of lightning discharges worldwide standing waves propagate through the earth’s atmosphere. These waves are known as the Schumann resonance. The longest wave, with a frequency of 7.83 Hz, hits the Earth and the ionosphere once per round.

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In this work, the electromagnetic waves are expressed in sound. Oscillators generate audio waves of 7.83 Hz, 14.3 Hz and 20.8 Hz respectively, and loudspeakers play those frequencies: the sounds are just too low to be heard.

Conical horns placed on the loudspeakers vibrate in time with the frequency: they do make audible noise. By using different types of paper and different sizes of horns in a programmed cycle, an ever-changing sound sculpture is created.

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These works were made possible by Mondriaan Fund

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