Christian Faubel, Crystal forming robots on overhead

The Crystal Forming Robots are little autonomous robots that are placed on an overhead projector. Each robot is powered by the light of the projector and their movements over its surface make tangible the growth process of crystal structures.

When a robot has collected enough energy, it will start moving around. The robots are equipped with tiny magnets, and as soon as two robots with matching polarity come close, they attract each other. Over time, more and more pairs of robots form, create larger clusters and a crystal like structure eventually emerges. The overhead projector magnifies the process into an abstract movie.

The background of this work are the early experiments of cybernetician Gordon Pask on building a chemical computer as a learning system. With the help of software simulation the idea of a growing structure that modifies its own perception of the environment is illustrated. The robotic implementation of the growth process is a first step towards making such a process tangible.

The robots are going to be presented in a performance and exhibition at the Sight + Sound festival in Montreal next month. The programme of the event is, as usual, rather exciting. Sadly, i can't make it to Montreal so i figured out that the next best thing would be to talk to some of the artists who will be there. Hence this little Q&A with Christian Faubel...

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Photographs of a clustering sequence, it took approximately 20 minutes for the final structure to build

Hi Christian! I'm very curious about the way the little bots move in this video. For example, what happens when they all get immobile? Is the system 'trying to figure out' what to do next? What controls the behavior of the robots? Why do some move and others are more passive? Is there a hierarchy?

There is no hierarchy, each of the robots is fully autonomous and triggers a movement when it has collected enough energy through its solar panel. Even though they are all built with the same components, they may have variations in timing and duration of their movement. These variations appear because the components are not perfect, they have physical differences and theses differences contribute to the behavior of the robots. Another contribution to differences in behavior, is the fact that environmental conditions on the ohp vary, in the center there is stronger light and thus more energy for the robots to harvest. As a consequence robots in the center move more often than those on the borders.

Your description of the text talks about parasites and ecosystems. The way the robots move has something a bit organic. It's particularly uncanny in the video version with colorful umbrellas. How important is the observation or imitation of nature when you're developing robotic artworks?

I see most of my robotic artworks as reflections on nature, I consider these robots as philosophical toys because they make the abstract concepts of autonomy and self-organisation tangible. These concepts were developed to describe and understand the way behavior is organized in living beings. So i think that ideally the artworks tell us something about ourselves.

The crystal forming robots are actually an experimental platform that i keep working on as part of my artistic research at the lab3. The first version, that is also documented in the video, had rectangular shapes, while I am currently working with hexagonal shapes. This local difference in shape has global effects in form of the growing shapes. My next step is to add contact points on the robots, so that when they cluster electrical connections are created. Once i have this in place there are so many experiments to do with growing electrical connections, i am really looking forward to this.

What is the 'diffusion limited aggregation algorithm', developed for simulating crystal growth? Can you explain us how it works?

The diffusion limited aggregation algorithm was developed and described in a seminal paper by Witten and Sander in the 80ties to simulate crystal growth processes. [Witten, T. t., and Sander, L. Diffusion-limited aggregation. Physical Review B 27, 9 (1983).]

The basic principle is to simulate particles that do a random walk (diffusion), when they hit a structure (by chance), they attach to that structure (aggregation). The structure is initialized with a single element, over time more and more particles dock onto the structure and a crystal like structure will form.

When you google for it you will find an overwhelming number of beautiful implementations in processing. Andy Lomas presented very nice simulations on Siggraph in 2005. I became interested in this algorithm by a general interest on growth processes and specifically through works such as Roots by Roman Kirschner, which took the works of Gordon Pask on building a chemical computer as starting point. My research on this topic is documented in a seminar on plasticity. When you scroll down you will also find some examples of experiments on crystal growth, as well as some simulations with the diffusion limited aggregation algorithm.

"Over time a crystal like structure emerges from more and more little robots forming larger clusters." What happens once the structure has been formed? is the bots work over and done? or do they separate and start again the clustering process?

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No they will not separate again, the whole process runs into one direction and after an hour or more there will usually be only one single big structure. The robots need to be reset manually when the process has converged. I would say that the experiment is finished, when the process has converged and that you then start another experiment, by putting the robots apart again. What you will observe over the course of multiple experiments is that the shapes that form are always different in detail, but structurally similar.

I saw on the festival program that you will also take part in a Monochrome Layering performance at the festival. Will the Overheadbots be part of the events? Or are you going to do something that has nothing to do with them?

The overheadbots have a lot to do with the performance. When we (Tina Tonagel, Ralf Schreiber and myself) started to work on our performance project some years ago, the overheadbots were sort of a trigger for this project. In our performance, the key is the simultaneity of sound and vision. We place kinetic objects such as for example overheadbots, but also all different kind of small robots or self build instruments on the ohp and we use pick-up microphones to amplify the sound that they make when moving. So that in parallel to the moving shadow, or moving light you also hear the sound of the movement.
this is maybe best captured in these two videos:

Kunst und Musik mit dem Tageslichtprojektor @ Designacademy Eindhoven


Performance at the Shinytoys festival, September 2011

Why do you chose to work mostly with analog robots?

I like the openness of analog circuits. You don't need to implement any sort of digital communication protocol to link up to a device. Instead you can couple thinks by simply putting a cable that creates electrical connection. For example the when the crystal forming bots are equipped with contacts, so that an electrical connection between them is created, it is enough to put that connection in between the trigger points of the two circuits and the robots will from the moment the connection is created move in synchrony. This happens without any re-programming or other re-configuration.
Another aspect of analog robots is their adaptivity to variations in the environment, that comes as an emergent property. As a matter of fact the behavior of these robots look very organic. I have explored this in more detail in a paper and presentation i gave last year at the xcoax conference in Bergamo http://2013.xcoax.org/pdf/xcoax2013-faubel.pdf.

Conceptually i like the concept of the analog, not in difference to digital computation, but estimating in contrast to counting. i have been influenced a lot by the book Analogous and Digital of the German designer and typographer Otl Aicher. In this book he writes for example that a digital clock always shows the time precisely to the second. It provides you with exact numerical values, but the landscape of time, whether it is morning or afternoon, too early or too late, i can easier deduce from the positioning of the clock hand on the clock face.

Speaking with Otl Aicher i would say that i am more interested in the landscapes than in numerical measures.

Thanks Christian!

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Please, don't miss Martin Creed: What's the point of it? at the Hayward Gallery if you're in London. It is visually stunning, very entertaining and it doesn't even require you to wriggle with your brain if you don't want to. In fact, i think this is contemporary art for people who can't suffer to see the words 'contemporary' and 'art' side by side. But don't quote me on this, i never tried to bring a contemporary art-hater to a retrospective of an artist who won the Turner Prize with Work No 227: The Lights Going On and Off, an installation in which the lights of an otherwise empty gallery were turned on and off every five seconds.

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Martin Creed, Work no 960

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Work No. 1094, 2011

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Installation view,Work no. 1092, 2011,Martin Creed What's the point of it, Hayward Gallery. © the artist. Photo Linda Nylind

Also i am not entirely impartial when it comes to Martin Creed. I love his work. Whether it's the Sick Films in which people enter an empty white space and proceed to vomit on the floor, the mocking neon signs or the cactus plants neatly positioned by size. I LOVE his work.

What's the point of it? is a retrospective which aim wasn't to simply assemble most of Creed's most representative pieces, but to provide a multi-sensory experience. As the following two works will easily demonstrate...

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Work no. 1092, 2011. (Photo by Happy Famous Artists)

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Work no. 1092, 2011. (photo by Happy Famous Artists)

The word MOTHERS almost literally hits you as you enter the gallery. You instinctively duck as the 6 gigantic neon letters slowly gyrate and dominate the whole room. It is fun and slightly menacing. I wonder how the Hayward wasn't served a loud "Health and Safety No No." Meanwhile, 39 metronomes lined up on the floor gently tick at various speeds.

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Installation view, Work no. 200, 1998, Martin Creed What's the point of it, Hayward Gallery. © the artist. Photo Linda Nylind

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Martin Creed, Work no 200

The small glass room above is filled with some 7000 balloons. I'm claustrophobic. Even the title of the installation, Work No. 200. Half the air in a given space, made me hyperventilate.

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Installation view,Work No. 1806, 2014, Martin Creed What's the point of it, Hayward Gallery. © the artist. Photo Linda Nylind

The exhibition is also an optical party: the walls serve as a happy splashy backdrop for the works. Creed covered them with layers of paint, stripes of adhesive tape and even with rows over rows of small broccoli prints.

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Installation view,Work No. 1585, 2013,Martin Creed What's the point of it, Hayward Gallery. © the artist. Photo Linda Nylind

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Photo by Happy Famous Artists

There were also videos from the Sick Film and Shit Film series. Work No. 660 shows a rather elegant and not entirely at ease young woman entering the frame and defecating in the middle of a white gallery.

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Work No. 660, 2007

I wish i could find online videos from the Sick Film series. I don't care much for the crap ones but the vomit series is mesmerizing. Some people throw up generously. Others struggle to do so and eventually give up. "Living," as the artist explains "is a matter of trying to come to terms with what comes out of you... That includes shit and sick and horrible feeling. The problem with horrible feelings is you can't paint them. But horrible vomit - you can film that."

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Work Number 1029. Photo via Purple

Rise and fall of an erection on to the Hayward's terrace. Creed has distributed works outside of the usual gallery space: on the terrace, in the bathroom, in the lifts of both the Royal Festival Hall and of the Hayward Gallery.

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Work 1686 (Ford Focus). Photo by Happy Famous Artists

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Photo by Happy Famous Artists

So what's the point of this exhibition? I guess there are many answers to that question. For me, it's about getting lost in sensations, being surprised, feeling awe and disgust at the same time and having a very happy moment that lasted long after i exited the show.

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Installation view Martin Creed What's the point of it, Hayward Gallery. © the artist. Photo Linda Nylind

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Martin Creed, Work no 629


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Installation view,Work No. 1110, 2011,Martin Creed What's the point of it, Hayward Gallery. © the artist. Photo Linda Nylind


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Martin Creed, Work no 88

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Installation view Martin Creed What's the point of it, Hayward Gallery. © the artist. Photo Linda Nylind

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Installation view, Martin Creed What's the point of it, Hayward Gallery. © the artist. Photo Linda Nylind

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Martin Creed, work no. 1095

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Work No. 1315

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Installation view,Work No. 928, 2008, Martin Creed What's the point of it, Hayward Gallery. © the artist. Photo Linda Nylind

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Installation view, Work No. 916, 2008, Martin Creed What's the point of it, Hayward Gallery. © the artist. Photo Linda Nylind

Ah! Martin Creed! Even the man looks very cool.

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Photo by Happy Famous Artists

Martin Creed: What's the point of it? is at the Hayward Gallery until Monday 5 May 2014.

The new episode of #A.I.L - artists in laboratories, the weekly radio programme about art and science i present on Resonance104.4fm, London's favourite radio art station, is aired tomorrow Wednesday afternoon at 4pm.

This week I'm going to be talking with Antony Hall. I interviewed Antony many many years ago and his work is as interesting as ever. Antony creates kinetic artworks; sculptures and installations, often using sonic, mechanical, fluidic, electronic or biological elements. But in the show we will focus on Owl Project, the artist collective that Antony forms together with Simon Blackmore and Steve Symons.


~Flow Documentary (Short Edit)

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Log1k


Owl Project, SoundLathe

Owl Project works with wood and electronics to create musical and sculptural instruments that question human interaction with computer interfaces and our increasing appetite for new and often disposable technologies.

The work of Owl Project goes from simple ironic devices such as the iLog which is a log that thinks it is a music player to large scale installations such as ~Flow, a floating tidal waterwheel powered  electro acoustic musical instrument responding to the river Tyne in Newcastle. Owl Project has also toured festivals and events with their rather ingenious Sound Lathe, a musical instrument based on a traditional green wood turning pole lathe that explores the relationship between the crafting of physical objects and the shaping of sound.

The radio show will be aired this Wednesday 5 March at 16:00, London time. Early risers can catch the repeat next Tuesday at 6.30 am. If you don't live in London, you can listen to the online stream or wait till we upload the episodes on soundcloud one day.

The new episode of #A.I.L - artists in laboratories, the weekly radio programme about art and science i present on ResonanceFM, London's favourite radio art station, is aired tomorrow Wednesday afternoon at 4pm.

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The Biological Bakery, 2014

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Algae Curtain, 2012

My guests in the studio will be Mathias Gmachl and Rachel Wingfield from Loop.pH. The work of the London-based studio speculates on near and far future scenarios as a way to probe at the social and environmental impact of emerging biological and technological futures. Some of their most renown projects include collaborating with a Nobel prize winner to communicate the functioning of molecular machines, designing a curtain made of algae that produce bio-fuel, setting up an edible DIY bio fab-lab for the video of Aussie band Architecture In Helsinki, creating an immersive sound and light performance that explores the field of neuroscience and investigating the possibilities of living architecture.

The radio show will be aired this Wednesday 5 February at 16:00, London time. Early risers can catch the repeat next Tuesday at 6.30 am. If you don't live in London, you can listen to the online stream or wait till we upload the episodes on soundcloud one day.

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Ron Haselden, Fête. Photo Chris Hill

A couple of weeks ago, i was in Derry/Londonderry. It was my first trip to Northern Ireland. Beautiful landscapes as i'm sure everybody knows, super friendly people, vegan-approved yummy food at the Legenderry Warehouse, some stunning socially-engages exhibitions i'll tell you about later and a city-wide event called Lumiere. Lumiere is a festival of 17 projections and installations that lit up as the night came onto the city. It is a crowd-magnet, a place to bring your family and marvel at what artists and designers can do with light. But don't be mistaken: some of the works had depth and bite.

Here's some of my favourite:

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Cleary Connolly, Change Your Stripes. Photo Chris Hill

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Cleary Connolly, Change Your Stripes. Photo Denis Connolly

I don't think i would have been that impressed had i seen Change Your Stripes by Ann Cleary and Denis Connolly inside a gallery. But in the street of Derry, when evening is coming and people are out to walk the dog and stumble upon the installation, it gains a touch of magic. The artwork only comes to life as you walk past.

The huge ondulating black and white stripes are projected on the facade of the Derry Credit Union. They move as people walk by it. Passersby silhouettes are multiplied and distorted in a fluid, dancing stream like in a living version of a fairground Hall of Mirrors.

At this point, i feel like i should add a few words about Derry/Londonderry's political context. First of all because i found the installation to be absolutely brilliant but far less fascinating than the surrounding Bogside murals. And second because it is difficult to avoid mentioning politics when you find yourself in a city which carries political tensions in its very name(s). Please skip the coming paragraph if, unlike me, you are not crassly ignorant about the local history.

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The Free Derry Corner might be a good introduction to the whole Derry or Londonderry issue. It was painted in 1969, shortly after the Battle of the Bogside, one of the first major confrontations of The Troubles, the 30-ish year old conflict about the constitutional status of Northern Ireland and the relationship between the unionists and loyalists (the mostly Protestant community who wanted Northern Ireland to remain part of the UK) and the Irish nationalists and republicans (the Catholic community who dreamed of a united Ireland.) If you're a nationalist you'll call the city Derry, and if you're a unionists you'll use the name Londonderry.

Now allow me to open a parenthesis. From now on i will refer to Derry/Londonderry as 'the city'. I'm already tired of typing that double name over and over. End of the parenthesis .

The sum up above is a bit rough but that should provide you with some context. The Bogside is also the area where Bloody Sunday took place in 1972.

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The Petrol Bomber (Battle of the Bogside), painted in 1994. Image by Keith Ruffles

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Bloody Sunday Mural. Photo by Keith Ruffles

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Operation Motorman, The Summer Invasion. Image by Keith Ruffles

But let's get back to Lumiere.

Some artists openly engaged with the local context, others didn't. As was to be expected, Krzysztof Wodiczko created a sharp, deeply moving work about local people's perception and memories of the past conflicts and their hopes for the future of the city.

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Krzysztof Wodiczko, Public Projection Derry-Londonderry, at Lumiere Derry 2013. Photo Chris Hill


Krzysztof Wodiczko, Projection at Lumiere Festival Derry Londonderry Ireland. Video by Maria Niro

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Krzysztof Wodiczko, Public Projection Derry-Londonderry. Photo Maria Niro

Public Projection for Derry~Londonderry was a series of extracts from interviews the artist had conducted with local people. Their words were screened from an ambulance (a fairly ubiquitous vehicle during The Troubles) onto several facades throughout the city .

Wodiczko talked to a cross-section of people, from ex-police officers to victims of the Troubles, from young people growing up in the aftermath of the conflict to people who had got into troubles for being on the 'wrong' side of the political divide at a certain time.

I saw people with tears in their eyes in the crowd....

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A Stitch in Time, Tim Etchells, 2013, Photo Chris Hill

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Tim Etchells piece being lifted into place on the roof of Rosemount Shirt Factory. Instagram by Artichoke

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Tim Etchells, A Stitch In Time. Picture Martin McKeown

Tim Etchells installed a few words that paid homage to Derry-Londonderry's shirt-making industrial past on top of the old Rosemount Shirt Factory.

The work was 23 metre long and 2-metre high making it visible from afar.

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Deepa Mann-Kler">Deepa Mann-Kler, Teenage Kicks. Photo via saatchi online

And so was Teenage Kicks. By this time, you've figured how much i (and the Lumiere festival) like to see big letters invading a city.

The 30m-long neon sign reading "A teenage dream's so hard to beat" sat on top of the city's BT building. It was inspired by the 1978 pop song of the same name, the greatest hit of Derry band, The Undertones.

"My impetus for this artwork is to celebrate a key moment from the history and culture of Derry," explained Deepa Mann-Kler. "I am an Indian woman who grew up in England, but came to live in Northern Ireland in March 1996. One of my abiding memories while growing up in Leicester, were of Northern Ireland during The Troubles, the TV footage of the army, rioting, and then the music of The Undertones."

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Fire Garden, Compagnie Carabosse, 2013. Photograph by Chris Hill

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Fire Garden, Compagnie Carabosse, 2013

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Fire Garden, Compagnie Carabosse, 2013. Photo Martin McKeown

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Fire Garden, Compagnie Carabosse, 2013. Photo Martin McKeown


Fire Garden. Video by Derry~Londonderry 2013

Fire Garden by Compagnie Carabosse lit up the whole St. Columb's Park and made you feel like you had just stepped into the set of one of those lavish BBC period drama.

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Holywell Trust and the Nerve Centre, The Empty Plinth. Photograph by Chris Hill

The empty plinth was originally topped by a statue of Governor Walker, until it was bombed (twice) by the IRA in 1973/4. It has remained unadorned since then.

Nerve Centre and Holywell Trust gave it a new life with a simple column of white light, as a symbol of togetherness and tolerance of a protestant and catholic cultural identity.

These sound like suitable words to close the post.

A few more images though...
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Daan Roosegaarde, Marbles. Picture Martin McKeown

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RMS Design, Grove of Oaks. Picture Martin McKeown

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The Lumiere public. Via Telegraph Belfast

Lumiere was produced by Artichoke for Derry-Londonderry UK City of Culture 2013.

Related: Krzysztof Wodiczko: The Abolition of War.

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Constance, 2013. Photo by Luce Moreau

I've finally gone through all the images and texts i made and received from the GAMERZ festival in Aix-en-Provence. There's a ridiculously high amount of new artists and works i'd like to blog about but let's start with what i think were the smartest and most elegant works in the festival. Both play with perception, both are by Luce Moreau, a member of the collective Otto-prod.

The first one is Constance, an installation set on the roof of one of the buildings of the School of Fine Arts in Aix-en-Provence and visible at night from a distance of several kilometers. Constance's 3 powerful laser axis were shining orthogonally from a box attached to a motorized equatorial frame (motorization by Patrick Reybaud). An equatorial frame is an instrument that astronomers attach to telescopes and cameras so that they can stay fixed on any object in the sky. The equatorial mount moves imperceptibly but steadily, thus canceling its own driving force by earth movement. The origin of the three axes remains with it in one point in space, as if in weightlesness.


Luce Moreau, Pulsar, 2012

The second work she was showing is Pulsar which also makes use of the equatorial mount. This time the artist filmed a perfectly immobile sun. She used an old camera which -see explanations below- is protecting itself from the powerful light of the sun by opening and closing its diaphragm.

Luce has otherwise a pretty spectacular portfolio. Have a look at Landmarks. She interrupted otherwise mundane landscapes with a system of mirrors that reflect sun rays in the direction of the camera lens.

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Jazbine, from the series Landmarks, 2010

But back to Constance and Pulsar. I asked Luce if she could give us more details about the works. The Q&A is below and if you scroll down you can also read her answers in french. Here we go...

Hi Luce! The lasers of Constance are visible from afar. How far away exactly? Why is it important that the rays can be seen from such a distance?

This is the first version of the Constance installation, it's a beta version for which I worked with a Slovakian workshop which specializes in renting lasers. We worked on making this special box containing three lasers oriented orthogonally to each other. We opted for the most powerful model they had (10 to 12 W), so that the lasers can reach as far as possible. Currently the laser rays can be seen from a distance of a few kilometers, but I can not measure exactly the distance at which we "lose sight" of them. The installation aims to disrupt our daily and familiar landscapes, punctuate our environment with this colorful landmark so that we start considering our relationship to time and space. It acts as a kind of clock at the scale of the landscape, it's a mechanism that we must decipher.

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Constance, 2013. Photo by Luce Moreau

And how do people who know nothing about this art installation interpret them when they see them in the sky?

I think that it depends on the context. During GAMERZ, Constance was central, located in the heart of the festival, in the city center. In this case, the global three rays were only visible from the outside of the city, and from a certain height. Festival goers and residents of the city center might have been intrigued and even perhaps attracted by these strings of light which 'hung' above their heads and led to the festival. It became more interesting when the public was in close proximity of work (less than 10 m.) The curious could walk around the installation and see the rays at their maximum strength. The proximity doesn't really allow you to understand the lasers movement, on the other hand, it offers an excellent visibility of the 3D effect.

When Constance is presented in Pau (13, 15 and 16 November at the festival Accès-s Cultures Électroniques), it will be in a completely different context. Installed on top of a hill outside the city, the work should offer the residents of Pau and its environs a more mysterious, distant vision. The imperceptible movement of lasers will be more apprehensible for visitors and locals. They see more clearly the path traveled over a few hours, but it will be less easy for them to observe the work from up close.

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Constance, 2013. Photo by Luce Moreau

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Constance, 2013. Photo by Luce Moreau

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Constance, 2013. Photo by Luce Moreau

Can exhibition visitors ever perceive what is happening?

I think visitors are first impressed by the power and finesse of the rays, the colors vibrate in a very particular way, and represent many threads stretched between them and the universe. Then they understand the immobility of the green ray, and see that its extremity points to a star, Polaris. From that moment, and with the help of some explanations if needed, everything falls into place and the installation awakens what lies dormant in a corner of the brain: our understanding of the world, our planet in its system, its infinity, and all the vertigo that it implies! Two visitors gave me their diametrically opposed impressions. The first experienced a sense of vertiginous emptiness, the installation embodying the oblique axis of our position on earth. The second person talked about being reassured by having a beacon, a landmark in this enormous universe.

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Constance, 2013. Photo by Luce Moreau

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Installation of Constance for the GAMERZ festival. Photo by Luce Moreau

The installation uses a motorized equatorial mount. Could you explain how it works and where/how you discovered about it?

I've discovered this system while I was working at the Observatory of Provence (OHP-CNRS) in the Summer of 2011.

I had the idea of ​​photographing or filming a landscape, freed from the movement of the Earth and I was curious to see how that would turn up. So I started thinking about a traveling rail system, calculating the speed of the rotation of the earth, obsessing over many practical details... Then one day while chatting with an amateur astronomer (Olivier Labrevoir), I found out about the equatorial mount, a very simple tool that sky watchers have used for decades to follow sidereal objects (stars, planets, etc. ) and that would allow me to get the effect i was looking for. The principle of this tripod is to rotate the visualization object (telescope, or photo and video cameras in my case) around a central axis, the axis being parallel to the axis of rotation of the Earth. To do this, the axis must point to the Pole Star, which happens to be very close to the geographic north of our planet and is therefore the only one that stand still when the earth rotates on its axis. This movement is motorized, the motors follow the exact same speed as the earth, but in the opposite direction. The camera is thus 'immobile'. It floats in weightlessness! And so is our point of view...

You used the equatorial mount in several of your work. Why do you find this point of view on our surrounding so fascinating?

I find this tool fascinating as for me, it represents a shift in meaning, the power to be in a state of weightlessness without leaving the ground ... a unique perspective that I had never experienced before, which is one of perfectly precise static condition. In order to explain the process, I often compare it to a jump that stays frozen in the air and that allows you to observe the planet that continues revolving. But without us. This is a levitation, a slow and gradual flying process, an experience and perspective I wanted to share.

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Pulsar, 2012 (view at the GAMERZ festival 2013)

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Pulsar, 2012 (view at the GAMERZ festival 2013)

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Shooting Pulsar

Do you have drawings or other image that would show visually the process used to make Pulsar? (mostly because i cannot understand very well how it was made)

Unfortunately I don't :) but i can explain:

Pulsar is filmed using the same tripod but this time the sole purpose is to focus on the sun and keep it stationary in the frame. The camera is an old, obsolete and fragile camera which "prints" momentarily the bright lights onto its sensor. In an effort to draw an analogy between the human eye and the camera sensor, I wanted to take advantage of this flaw and obtain a set of persistence of vision. The intermittent closure of the diaphragm is an automatic protection of the camera, which closes its "lid" when it feels assaulted by too much light. If you were standing next to the camera, you would see the diaphragm ring oscillating from 16 (minimum aperture) to C (total closure.) The camera is protecting itself from the offensive and destructive sun.

Merci Luce!

Constance is a co-production M2FCréations, Accès-s Cultures Électroniques and Otto-Prod. Check out Luce's work at the Soleils Numériques festival ACCES(S), from 10 to 23 November in Pau and around, France.

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And now for the version in french:

The lasers of Constance are visible from afar. How far away exactly? Why is it important that the rays can be seen from such a distance?

L'installation Constance en est à sa première version, une version bêta pour laquelle j'ai travaillé avec un atelier slovaque de location lasers. On a collaboré sur la fabrication de ce boîtier spécial renfermant trois lasers orientés de façon orthogonale les uns par rapport aux autres ; nous avons choisi ce qu'ils avaient de plus puissants (de 10 à 12 W), afin que les lasers se voient du plus loin possible. Actuellement nous pouvons voir les rayons lasers jusqu'à quelques kilomètres, mais je ne peux pas savoir exactement à quelle distance nous les "perdons de vue". L'installation a pour but de perturber nos paysages familiers et quotidiens, d'annoter notre environnement de ce repère coloré afin d'être amené à considérer notre rapport au temps et à l'espace. Une sorte d'horloge à l'échelle du paysage, un mécanisme qu'il nous faut déchiffrer.

And how do people who know nothing about this art installation interpret them when they see them in the sky?

Je pense que cela dépend du contexte ; lors du Fetsival GAMERZ, Constance était centrale, installée au coeur du festival, dans le centre ville. Dans ce cas précis, les trois rayons n'étaient visibles ensemble que de l'extérieur de la ville, d'un point de vue en hauteur ; les festivaliers et habitants du centre ont pu être ntrigués, peut-être attirés par ces fils de lumière au-dessus de leurs têtes, qui menaient au festival. L'intérêt que j'y ai trouvé était la proximité du public face à l'oeuvre : les plus curieux pouvaient graviter autour de l'installation à moins de 20 mètres et voir les faisceux dans leur puissance maximum. La proximité permet moins de comprendre le mouvement iopéré par les lasers, mais offre une visibilité privilégiée de l'effet de 3D.

Lorsque que Constance sera présentée à Pau (les 13, 15 et 16 novembre au festival Accès-s Cultures Électroniques), ce sera dans un tout autre contexte ; installée sur les hauteurs d'une colline, à l'extérieur de la ville, elle devrait offrir aux habitants de Pau et de ses environs une vision plus mystérieuse, lointaine. Le mouvement imperceptible des lasers sera ainsi plus compréhensible par les visiteurs et les habitants. Ils verront mieux la trajectoire opérée en quelques heures, mais pourront moins facilement l'observer de près.

How about the exhibition visitors. Can they ever perceive what is happening?

Les visiteurs sont je pense tout d'abord impressionnés par la puissance et la finesse des rayons, dont les couleurs vibrent de façon très particulière, et qui représentent autant de fils tendu entre eux et l'univers. Puis ils comprennent l'immobilité du rayon vert, et voient que son extrémité pointe une étoile, la Polaris ; à partir de ce moment-là; et avec l'aide de quelques explications si besoin, tout se met en place et cette installation excite ce qui vit dans un coin de chaque cerveau : notre appréhension du monde, de notre planète dans son système, son infinité, et tout le vertige que ça sous-entend! Deux visiteurs m'ont ainsi donné leurs impressions contraires : la première avait un sentiment de vide vertigineux, l'installation matérialisant l'oblique de notre position sur terre, quant à la seconde elle était rassurée par le fait d'avoir une balise, un repère dans cet ensemble démesuré.

The installation uses a motorized equatorial mount. Could you explain how it works and where/how you discovered about it?

I've discovered this system while I was working at the Observatory of Provence (OHP-CNRS) in summer 2011. J'avais eu l'idée de photographier, ou filmer un paysage, affranchi du mouvement de la Terre ; j'étais curieuse de voir ce que ça pouvait donner. J'ai donc commencé à réfléchir à un système de rail de travelling, calculer la vitesse de rotation de la terre, me prendre la tête sur beaucoup de points pratiques... Quand au cours d'une conversation avec un astronaume amateur (Olivier Labrevoir) j'appris l'existence de la monture équatoriale, outil très simple dont les observateurs du ciel se servent depuis plusieurs dizaines d'années pour suivre des objets sidéraux (étoiles, planètes, etc) et qui me permettrait d'obtenir le résultat recherché. Le principe de ce trépied est de faire pivoter l'objet de captation (téléscope, ou appareil photo et caméra dans mon cas) autour d'un axe central, cet axe étant parallèle à l'axe de rotation de la Terre. Pour ce faire, l'axe doit pointer l'étoile polaire, qui se trouve être très proche du Nord Géographique de notre planète ; elle est donc la seule à rester immobile lorsque la terre tourne sur son axe. Ce mouvement est motorisé, les moteurs pas à pas vont à l'exacte vitesse de rotation de la terre, en sens inverse ; la caméra fait ainsi du "surplace". Elle est en apesanteur! Et notre point de vue avec elle...

You used the equatorial mount in several of your work. Why do you find this point of view on our surrounding so fascinating?

Je trouve cet outil fascinant car il représente pour moi, par glissement de sens, le pouvoir d'être en état d'apesanteur sans quitter le sol...un point de vue inédit, que je n'avais jamais pu observer auparavant, qui est celui du statisme le plus exact ; souvent pour expliquer le procédé, je parle d'un saut surplace, mais durant lequel on reste figé dans les airs, et durant lequel on peut observer notre planète continuer à tourner, sans nous. C'est une lévitation, un procédé d'envol lent et progressif, et dont je voulais partager le témoignage et le point de vue.

Do you have drawings or other image that would show visually the process used to make Pulsar? (mostly because i cannot understand very well how it was made)

Unfortunately I don't :) mais je peux expliquer :
Pulsar est filmée depuis ce même trépied qui est ici utilisé dans le seul but de centrer le soleil et de le garder immobile dans le cadre. La caméra est une vieille caméra, obsolète et fragile, qui "imprime" momentanément les fortes lumières sur son capteur. Dans une volonté d'analogie entre l'oeil humain et le capteur de la caméra, j'ai voulu profiter de cette lacune et obtenir un jeu de persistance "rétinienne" ; la fermeture intermittente du diaphragme est une protection automatique de la caméra, qui ferme sa "paupière" lorsqu'elle se sent agressée par trop de lumière. Si tu étais surplace aux côtés de la caméra, tu verrais osciller la bague du diaphragme de 16 (ouverture minimum) à C (fermeture totale) ; la caméra se protège de ce soleil offensif et destructeur.

Merci Luce!

Constance est une co-production M2FCréations, Accès-s Cultures Électroniques et Otto-Prod. Le travail de Luce sera au festival Soleils Numériques - ACCES(S), du 10 au 23 Novembre, Pau et agglo, France.

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