Circle, 1991, Living Art Museum, Reykjavik, Iceland, Video

In 1991 at the Living Art Museum, Pétursson installed a large loudspeaker suspended over a darkened pit filled with water. The work was titled Circle, since the loudspeaker formed a sound wave whose frequency was boosted to 0-200 hz and rippled the surface of the water so that the wave motion formed regular circles at certain moments of the process. As the pitch of the wave rose the pattern on the surface of the water changed, and was projected on to the wall. Aided by the water and the projector, the artist managed to make the amplification of sound visible. H.B.R.

Cirle 1991
The Reykjavik Energy 2005

The loudspeaker forms a sound wave whose frequency is boosted to 0-40hz and ripple the surface of the water so that the wave motion forms regular circlesat certain moments of the process. As the pitch of the wave rose the pattern on the surface of the water changed, and is projected on to the wall.