A Semiconductor work by Ruth Jarman and Joe Gerhardt.

Made for the exhibition Invisible Fields at Arts Santa Monica in Barcelona Spain.


20 Hz observes a geo-magnetic storm occurring in the Earth’s upper atmosphere. Working with data collected from the CARISMA radio array and interpreted as audio, we hear tweeting and rumbles caused by incoming solar wind, captured at the frequency of 20 Hertz. Generated directly by the sound, tangible and sculptural forms emerge suggestive of scientific visualisations. As different frequencies interact both visually and aurally, complex patterns emerge to create interference phenomena that probe the limits of our perception.

05.00 minutes. / HD / 2011

HD single channel and HD 3D single channel.

20Hz is co-commissioned by Arts Santa Monica + Lighthouse . Supported by the British Council.