"Immaterials: Light Painting WiFi" by Timo Arnall (with Jørn Knutsen & Einar Sneve Martinussen). To be exhibited in Invisible Fields.
"Immaterials: Light Painting WiFi" by Timo Arnall (with Jørn Knutsen & Einar Sneve Martinussen). To be exhibited in Invisible Fields.



14 OCTOBER 2011 - 4 MARCH 2012


Invisible Fields is a major international exhibition that took place from 14 October - 4 March 2012 at Arts Santa Monica in Barcelona Spain. The show brought together over a dozen internationally known artists, designers and scientists to explore the radio spectrum - the invisible environment that underpins contemporary technology. Co-curated by José Luis de Vicente and Lighthouse, director Honor Harger, the show included significant works by Rafael Lozano-Hemmer, Trevor Paglen, Timo Arnall, Joyce Hinterding and many more. It was presented in the Laboratory space of Arts Santa Mònica directed by Josep Perelló.

Frequency & Volume by Rafael Lozano-Hemmer. Photo by Xavi Soto
Frequency & Volume by Rafael Lozano-Hemmer. Photo by Xavi Soto

The exhibition catalogue is now available to buy from Lighthouse. Click here to find out more.

Invisible Fields explores how our understanding of our world and our cosmos has been transformed by the study of radio waves. With the invention of telecommunication technology at the end of the 19th century, the radio spectrum became a tool for rethinking the world we live in. Radio collapsed geographical distance, crossed borders and cultures, became a powerful catalyst for commerce and enabled scientists to study the cosmos in entirely new ways. Yet whilst the radio spectrum is the invisible infrastructure that enables the technologies of information and communication, most people are unaware of the way it works, how it is managed, and how it is has shaped our understanding of our lived environment.

Invisible Fields aims to shine a light on this enigmatic landscape. The exhibition differed from past explorations of these topics, in that it is conceived as an interdisciplinary blend of social-cultural analysis, science communication, and artistic practice.

Complimenting the exhibition is a beautifully designed full-colour 102 page catalogue, featuring the work from the show, and specially commissioned essays by theorists, historians and commentators. Click here to find out more.


Timo Arnall (BERG), Thomas Ashcraft, Matthew Biederman, Anthony DeVincenzi (MIT Media Lab), Diego Diaz and Clara Boj, Joyce Hinterding, Rafael Lozano-Hemmer, Trevor Paglen, Job Ramos, Semiconductor, Luthiers Drapaires, and Rasa Smite & Raitis Smits (RIXC).


Drone Vision by Trevor Paglen
Frequency & Volume by Rafael Lozano-Hemmer
Harnessing Wild Electricities From Outer Space by Thomas Ashcraft
Immaterials by Timo Arnall
Invisible Forces by Anthony DeVincenzi
Loops and Fields: Induction Drawings Series 4 by Joyce Hinterding
Magnetic Movie by Semiconductor
20Hz (new commission) by Semiconductor
Radio Liberty (new commission) by Job Ramos
Observatorio by Clara Boj and Diego Diaz
Office of Spectral Ecology by Matthew Biederman
Skrunda Signal by Rasa Smite & Raitis Smits (RIXC)
The Conet Project by Irdial Records


A community WIFI workshop and infomation space by Guifi.net
A satellite observation workshop and ground-station by Plataforma Cero LABoral
An antenna-building workshop and antenna collection by Luthiers Drapaires
A micro-FM building workshop by Arts Santa Monica

The exhibition design, by Run Design, included an operational Faraday Cage, a visual spatialisation of the electromagnetic chart and a visual timeline of spectrum utopias.


More than a linear, historical narration of the evolution of spectrum technologies, Invisible Fields can best be understood as an “observatory”, which enables visitors to perceive the radio spectrum. It sets out the spectrum as a physical space, invisible but present, a terrain that can be studied, mapped, surveyed and explored. It is an environment made of signals and waves from nature, and from us. Its topography is formed of waves of different scales, from tiny emissions given off by domestic objects to vast emissions made by distant astronomical phenomena. It’s made up of signals that are very familiar, such as television and radio, and signals which are esoteric and enigmatic. It is an ecology that has public spaces – wireless internet and amateur radio – and secret spaces – coded military transmissions and clandestine signals.

Following on from pioneers such as John Cage, Alvin Lucier and Pauline Oliveros, contemporary artists such as Thomas Ashcraft, Semiconductor and Joyce Hinterding create powerful works that allow us to understand the radio spectrum as an extension of the natural world.

Sitting alongside their almost Emersonian understanding of radio as nature, is recent work in the field of architecture, design and urbanism, which expands the notion of urban space into the invisible realm of the spectrum. “Hertzian space”, a term coined by designers, Anthony Dunne & Fiona Raby, is defined by our transmissions of radio, television, wireless internet, GPS data and mobile phone signals. It is a space interrogated by artists and designers such as Timo Arnall from the BERG group in London, and Clara Boj and Diego Diaz who create clever visualisations of the presence of waves in our daily life.

Elsewhere in the show, artist Rafael Lozano-Hemmer’s monumental tribute to the radio dial, enables us to physically move through radio transmissions, giving us a visceral encounter with our ethereal cultural surroundings. And experimental geographer and artist, Trevor Paglen and artist-activists, RIXC, shed light on the dark zones of the spectral landscape.

Invisible Fields is not only concerned with the topology of the radio landscape, but rather the socio-political activities that take place within it. Alongside the artworks in the show are operational workshops, which remind us that our position with the architecture of the spectrum is far from being that of a passive observer. As such, the exhibition space hosts intensive activity for a wide variety of audiences, with workshops on Sunday mornings, and a complete education programme offered to schools.

Taken together the works in Invisible Fields make the intangible materiality of the electromagnetic spectrum visible and audible. They open up the Hertzian space around us, and above us, to our senses. The visions of artists, the solutions of designers, and the experiments of scientists give us the tools we need to create our own mental maps of this profoundly influential terrain.

Dates: 14 October 2011 – 4 March 2012

Venue: Arts Santa Mónica
La Rambla, 7
Barcelona, Spain


Organized by Arts Santa Mònica

Curated by: Honor Harger and José Luis de Vicente
Assisted by: Irma Vilà

Produced by Arts Santa Mònica, in association with Lighthouse.

In conjunction with:
British Council
Bureau du Quebec, Barcelone | Conseil des Arts et des Lettres du Quebec
Laboral Centro de Arte y Creación, Gijon
Bòlit, Centre d’Art Contemporani, Girona

We acknowledge the support of: Proyecto PARTNeR Centro de Astrobiología (INTA-CSIC), Departament d’Astronomia I Meteorologia-Universitat de Barcelona, Escola Tècnica Superior d’Enginyeria de Telecomunicació de Barcelona-Universitat Politècnica de Catalunya.




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