Archives for posts with tag: cosmic ray detector

Super happy with the beautiful box, with walnut burr veneer, made by the skilled hands of Bruce Watson to house my cosmic ray detectors for cosmically interactive work The Breath of Stars. Bruce has a workshop opposite my studio at Thames-side Studios. The attention to detail is immaculate.

The Breath of Stars is a digital video work activated in real time by the passage of cosmic particles travelling from distant galaxies. These subatomic visitors from outer space are created during super nova explosions or by phenomena we are yet to discover.

Work in progress continues with tearing down paper squares for the Azimuth Obelisk.

Single vertical forms embody a primitive power. Etymologically, an obelisk should be made from a single quarried stone. To quarry one enormous piece of rock without it fracturing required power and money. To erect it required complex engineering skills. Since the first obelisks were raised in Egypt, often in gateway pairs with gilded tips for the sun god Re to anoint, they have escaped the confines of their original meaning. Originally a motif of immortality and communion between heaven and earth, its phallic symbolism has been co-opted by many nations, institutions and companies for its crude assertion of male power. Mystics shape crystals into obelisks as symbols of pent up negative energy in need of release. Perhaps the many memorials to the dead, marked by an obelisk usually cast in concrete, attempt to embrace the notion of immortality through remembrance in those carved names.

I don’t know why an obelisk was chosen as the azimuth marker at Hartland Magnetic Observatory. It’s hard to establish its actual shape as it can barely be seen now through the woods. Perhaps one day I will go back with binoculars.

I have imagined my obelisk sculpture as sedimentary rock with the layers holding clues to the fluctuations of the Earth’s magnetic field it stands as constant sentinel to. Made from recycled prints it is also a memorial to all the images buried in its form.

Looking North.

After unsuccessfully trying RHS Wisley for a book or advice on growing moss I have got some guides from the Field Studies Council. Hopefully these will help me choose the sort of moss that will be appropriate to use for the north wall of the Absolute Hut Installation. I am also beginning to collect wood to grow the moss on. The exhibition is several months away but I think it can take a while for moss to get established. The advice seems to be to liquidise some moss with yoghurt and spread it on the surface you want it to grow on.

The geographic north pole lies in the middle of the Arctic Ocean covered in shifting sea ice where the sun rises and sets only once per year. All lines of longitude converge here and hence all time zones. It is known as true north to distinguish it from the magnetic north pole.

However, as the Earth’s axis of rotation wobbles slightly in an irregular circle called the Chandler wobble this pole is not fixed. Where Earth’s rotational axis meets its surface is known as the instantaneous north pole and the north pole of balance, lies at the centre of this circle. The celestial north pole is where the axis line of the Earth extends into the night sky.

The magnetic north pole is where the planet’s magnetic field is vertical and a compass needle here would dip and try to point straight down – hence its other name: the magnetic dip pole.

The north geomagnetic pole is the northern dipole of the planet. When looked at from space the Earth may look like a bar magnet with two dipoles, but the geomagnetic poles are an approximation arrived at by reducing Earth’s complex and varied magnetic field to that of a simple bar magnet. The north dip pole lies in Northern Canada, the northern dipole is roughly off the northwest coast of Greenland.

The magnetic field lines of the Earth flow from south to north magnetic pole which is the opposite of a bar magnet where the lines flow north to south.  The north magnetic dip pole is where the earth’s magnetic field lines pull toward the planet, acting like the south pole of a bar magnet. The north pole of a bar magnet is attracted to the magnetic north pole of the Earth, not resisted as two north poles on magnets repel one another.

The extraordinary paintings in the Lascaux Caves of southwestern France may include representations of constellations and therefore be the earliest star maps dating back to nearly twenty thousand years ago. The dots set around an Aurochs eye in the Hall of Bulls may be the Hyades star cluster around the star Aldebaran as the eye of Taurus. Other dots are similar in configuration to the Pleiades. Now sealed off from the contamination of human breath the public can visit a replica site to gain a sensory experience of the scale and artistry. Painted on to the wall of the shaft is a bull, a strange bird-man and a mysterious bird on a stick. which according to Dr Rappenglueck, form a map of the sky with the eyes of the bull, birdman and bird representing the three prominent stars Vega, Deneb and Altair. Around 17,000 years ago, this region of sky would never have set below the horizon and would have been especially prominent at the start of spring.

The Pleiades visible to the naked eye from almost anywhere on Earth appear as a small asterism of six or seven stars. At a distance of about 444 light years, it is among the nearest star clusters to Earth. Chased by Orion the seven sisters were transformed by Zeus and flung into the sky to escape the hunter. Through a lens, we can now see there are a lot more sisters drifting through a cloud of interstellar dust which scatters the light into a misty blue cloak. Image by Emil Ivanov.

A third research trip to Snettisham.

This time I shared the experience with good friends Ruth and Odile and we joined an RSPB group visit which allowed parking nearer the viewing site avoiding the usual long walk in the dark. The drive along the narrow potholed track, with no headlights which would alarm the birds, is a challenge and I was grateful for another car who had visited before leading the way. It was a chilling -7 at 7am making it difficult to use the camera with frozen fingers.

Eventually the sun cut through the low mist giving us stunningly beautiful skies to watch the skeins of pink footed geese leave their roost to go in search of sugar beet fields.

Having spent the night on the mudflats to avoid predators they leave at dawn in family groups. If there is a bright moon shining, they might not return from the feeding grounds at night as they can see if there is any danger approaching.

Before leaving Norfolk we visited Welney Wetland Centre, Britain’s largest area of seasonally-flooded land and the setting for mass winter gatherings of many thousands of wild ducks, geese and swans. Each winter thousands of Bewick’s and whooper swans make their winter migration to the UK, to escape colder countries.

They have popular swan feeding sessions and talks about the site and the work they do to protect the wildlife here such as liaising with the electric companies to hang reflectors on the overhead cables to make them more visible to flying birds.

Walking around the frozen fens reminded me of the James Turrell installations of diffuse light that makes it hard for the eye to focus.

The light-sensitive molecules that allow perception of the Earth’s magnetic field, could also influence other responses such as control of circadian rhythms and tracking the difference between night and day. In birds, Cryptochrome molecules are located in photoreceptors in the eye and react to the Earth’s magnetic field when excited by blue light enabling orientation and navigation. Light sensitive molecules can also be found in cell nuclei and may influence physiological processes, such as fattening and migratory motivation, working as a trigger for changes in behaviour.

Light vibrates up and down as it travels in waves and these vibrations can be vertical, horizontal, or at any angle in between. The waves that make up sunlight are evenly distributed across all angles but polarised light is made up of waves with the vibrations at only one angle. Polarising lenses absorb horizontal light while letting through the vertical waves reducing the overall intensity of the light that passes through. Light also becomes partially polarized when it reflects at an angle from a surface such as when the sun is low in the sky. Research led by Rachel Muheim has shown that birds are better able to use their magnetic compass when the direction of polarised light exciting the cryptochrome molecules is parallel to the magnetic field. She suggests that it is more useful for birds to sense the magnetic field during sunrise and sunset for orientation to determine their direction before migrating or leaving the roost. In the middle of the day, when the polarised light is approximately perpendicular to the magnetic field, it can be an advantage that the magnetic field is less visible, so that it does not interfere at a time when visibility is important to locate food and to detect predators.

Gallery Visits

Sarah Kent and Claire Loussouam performance interacting with iterations of the work Graft at the finissage of Liz Elton’s Work in Progress residency at Fitzrovia Gallery. Great to see the gallery filled with these delicate wafting landscapes made from biodegradable materials and natural dyes.

Strange Clay at Hayward Gallery explores the possibilities of thinking through making.

The exhibition features works by Aaron Angell, Salvatore Arancio, Leilah Babirye, Jonathan Baldock, Lubna Chowdhary, Edmund de Waal, Emma Hart, Liu Jianhua, Rachel Kneebone, Serena Korda, Klara Kristalova, Beate Kuhn, Takuro Kuwata, Lindsey Mendick, Ron Nagle, Magdalene Odundo, Woody De Othello, Grayson Perry, Shahpour Pouyan, Ken Price, Brie Ruais, Betty Woodman and David Zink Yi.

Stand out favourites were the dark volcanic and glistening contrasting surfaces of Salvatore Arancio’s work and the extraordinary and impressive scale of the squid in a pool of corn syrup and Japanese ink by David Zink Yi

Abraham Kritzman A Hand Beneath The Hills at Danielle Arnaud. I was intrigued to visit to see the small pillar structures and the interesting use of ceramics. Kritzman doesn’t like to give a lot away about his work so impressions are not pre-directed. The camouflage paintwork on the sculptures, crenellations and frenetic lines in the prints had a war like ambience. The influences however appear to come from the insect world of metamorphism, burrowing and speed.

Reading

Being a Human by Charles Foster. I got this book as I thought it might offer some points for discussion at the upcoming debate Being Human in relation to the night sky to be held at Allenheads Contemporary Arts. Unfortunately it didn’t have any useful insights and was rather judgemental and smug despite some clever and comic attempts at self effacement. The sort of smugness that emanates from those of devout faith where the judgement is on those unfortunate enough not to share or even aspire to the same definitive experience as that of the author. It also has some of the smugness of the parent loudly interacting with their offspring in public to show off their parenting skills/precocious/cute child. I did appreciate it was well written and researched. Acres of endnotes and a huge reading list which could turn out to be useful. Some points were well made about the edge as the site of all change and the idea that what is imagined is no less real but the packaging just wasn’t for me.

Listening

The Magnetic Mystery – investigate the mysterious power of magnets, with the help of wizard-physicist Dr Felix Flicker and materials scientist Dr Anna Ploszajski.

https://www.bbc.co.uk/programmes/m001h49f

Editing footage for the video Belly of a Rock which will be shown on an old monitor encased in a sculptural hybrid form relating to both mollusc and rock. The giant sea slug of the mollusc family, can derive directional cues from the magnetic field of the earth which is then modified in response to the lunar cycle. It orients its body between north and east prior to a full moon. In the slug’s nervous system, four particular neurons are stimulated by changes in the applied magnetic field, and two are inhibited by such changes suggesting that the animal uses its magnetic sense continuously to help it travel in a straight line.

The Earth can be divided into the inner core, the outer core, the mantle, and the thin crust. The outer core is about 1,367 miles thick and mostly composed of liquid iron and nickel. It is very malleable and in a state of violent convection. The churning liquid metal of the outer core creates and sustains Earth’s magnetic field. At the boundary between the inner and outer core temperatures can reach 6,000° C which is as hot as the surface of the sun. The inner core is a dense ball of mostly iron, but with a temperature above the melting point of iron, it is not liquid or even molten. Intense pressure from the rest of the planet and its atmosphere prevents the iron inner core from melting as the iron atoms are unable to move into a liquid state. It could be described as a plasma behaving as a solid. The inner core rotates eastward, like the surface of the planet, but it’s a little faster, making an extra rotation about every 1,000 years.  Geoscientists think that the iron crystals in the inner core align north-south, along with Earth’s axis of rotation and magnetic field and are arranged in a hexagonal close-packed pattern. The orientation of the crystal structure means that seismic waves travel faster when going north-south than when going east-west. Seismic waves travel four seconds faster pole-to-pole than through the Equator. 

The Earth is still cooling and as it does so, bits of the liquid outer core solidify or crystallize causing the solid inner core to grow by about a millimetre every year. The growth is not uniform, it is influenced by activity in the mantle and is more concentrated around regions where tectonic plates are slipping from the lithosphere into the mantle, drawing heat from the core and cooling the surrounding area. The crystallization process is very slow, and further slowed by the constant radioactive decay of Earth’s interior. Scientists estimate it would take about 91 billion years for the core to completely solidify but the sun will burn out in just 5 billion years. 

I have nervously passed the cosmic ray detectors over to programmer Jamie. It was hard to let them out of my sight after so much work to get them built but he can’t test the code he has written without them. The Breath of Stars directly interacts with cosmic rays in real time to trigger a digital reaction via a mini computer attached to a block of plastic scintillator and a sensitive photomultiplier. As each particle strikes the plastic scintillator its energy is recorded and a starburst image video relative to the energy released is projected, with the largest images representing the particles with the highest energy.

I am constructing an Obelisk sculpture in response to the concrete obelisk erected in 1955 at Hartland Magnetic Observatory, near the site’s northern boundary as a permanent azimuth mark. It is viewed via a theodolite through a window in the north wall of the Absolute Hut, its azimuth being 11º27’54” E of N and marks the point from which the magnetic north pole is tracked as it drifts westwards. Layers of torn recycled paper are stacked like sedimentary rock that holds clues to the Earth’s magnetic field reversals in its strata.

Copper contours of magnetic field lines have been lacquered to preserve the heat patina from plasma gun cutting. These shapes will be pinned to the north facing mossy wall of the Absolute Hut installation, a reimagining of the Absolute Hut at Hartland Magnetic Observatory. I will also employ a north facing window from which to observe the azimuth mark of the Obelisk sculpture.

A second research visit to RSPB Snettisham, this time to see the pink footed geese (which over winter on the mudflats here) leave their roost at dawn to fly to the fields to feed.

The walk from the car park to the viewing area is over 2km and takes about half an hour to walk. Setting out before first light the weather felt promising but just as I erected the camera tripod the rain came down hard and didn’t stop for the rest of the morning.

Made a second attempt the next morning leaving a little earlier and although it remained dry there was heavy fog over the sea. Not great for filming with my very basic kit but very atmospheric to experience as the geese emerged from the sea mists.

The noise they make is incredible, a constant chattering building to a crescendo of honking calls as they rise from the water and swarm across the sky in their hundreds. They come in waves but look like particles. At one point what sounded like a few gunshots fired out across the bay in the distant darkness. This sudden disturbance set off a slow deep rumble which drew closer accompanied by a low dark cloud growing heavily stronger building and rising as a huge tidal wave of geese rose simultaneously into the sky in panicked disarray. Extraordinary to witness.

Birds are able to “see” Earth’s magnetic field lines and use that information for navigation. Their compass ability comes from a quantum effect in radical pairs, formed photochemically in the eyes. This light sensitive magnetic compass used by birds is affected by the polarisation direction of light. Exposure to blue light excites an electron, which causes the formation of a radical-pair whose electrons are quantum entangled, enabling the precision needed for magnetoreception.

In chemistry a radical is an unpaired electron which is can be highly chemically reactive. In the radical pair mechanism a pair of electrons with opposite spins have a chemical bond. Light can cause the electrons to change spin direction which can break the bond giving the electron a chance to react with other molecules. In magnetoreception two cryptochrome molecules, found in the rod cells in the eyes of birds, each with unpaired electrons, exist in states either with their spin axes in the same direction, or in opposite directions, oscillating rapidly between the two states. That oscillation is extremely sensitive and can detect the weak magnetic field of the Earth. Birds then move their heads to read the spin of the molecules and therefore detect the orientation of the magnetic field.

While in North Norfolk staying in a beach chalet away from light pollution I was able to make a couple of short time lapse videos centering on Polaris.

Birds can detect the slow arc of the sun and the rotation of the constellations across the sky which is imperceptible to humans and allows migrating birds to orient themselves using celestial navigation as well as magnetoreception.

Birds are also able to detect rapid movement such as individual flashes or flickering of a fluorescent light which humans see as a continuous light. Hawks which pursue other birds through dense forests at high speeds, follow the movement of their prey while avoiding branches and other obstacles. To humans travelling at this speed, the fleeing prey, branches and obstacles would just be a blur.

Gallery Visit

Thames-side Gallery ‘The Accurate Perception Available When Our Eye Becomes Single’ is an immersive multi-screen installation evoking the emotional specifics of place (Orford Ness on the Suffolk coast) while exploring the elasticity of time and history. It is an audio-visual collaboration between Richard Ducker (video) and Ian Thompson (sound) with no linear narrative; sound and image are not synchronised, so each viewing is a unique experience. Sarah Sparkes also makes an enigmatic performative appearance both in the video and live in the gallery.

The crashing sea on shingle, open spaces and brutalist bunker architecture of Orford Ness are echoed in the gallery with audio pitched to envelop and resonate but not overwhelm. Nicely done.

Listening

I really enjoy the Inside Science podcasts with Gaia Vince and this one interviewing cosmologist and theoretical physicist Laura Mersini-Houghton about finding evidence that supports her multiverse theory was particularly fascinating.

Multiverses, melting glaciers and what you can tell from the noise of someone peeing

According to Laura the single universe theory is mathematically impossible.

Reading

Merlin Sheldrake’s Entangled Life. A remarkable reveal of an other world, so different yet so entwined with our own. Beautifully clear analogies help to bridge an understanding between human and fungi.

The ability to detect and respond to chemicals is a primordial sensory ability.

In humans when a molecule lands on our olfactory epithelium and binds to a receptor it causes nerves to fire triggering thoughts and emotional responses.

A mycelial network is one large chemically sensitive membrane: a molecule can bind to a receptor anywhere on its surface and trigger a signalling cascade that alters fungal behaviour.

Fungal lives are lived in a flood of sensory information.

They have light receptors, are sensitive to touch and it also looks like fungi may form fantastically complex networks of electrically excitable cells – a potential ‘fungal computer’ using electrical signalling as a basis for rapid communication and decision making which could learn and remember.

Honoured to have The Forms installed in the magnificent Wells Cathedral as part of Wells Art Contemporary

The immutable truths Plato discovered in geometry belong to the realm of abstract thought and ideals he called The Forms. Twelve pentagons form a dodecahedron which Plato defined as ‘a fifth construction, which the god used for embroidering the constellations on the whole heaven.’

Today it is dark matter that science believes holds the stars in the heavens. In visualisations of dark matter created from cosmological data provided to me by KIPAC Stanford University, we see familiar organic patterns emerge; the fronds of dark matter spanning between galaxies could be the spreading branches of trees or the veins under our skin.

In Plato’s the allegory of the cave, those in the cave mistake shadows thrown by the fire onto the cave wall as reality; in a similar way we are guessing what dark matter is from the shadows we see, such as gravitational lensing and galaxy rotation curves.

Thrilled with the location of my work in the Lady Chapel, interacting with the patterns and geometry of the Minton tiled floor.

Working on Breath of Stars – making a data base of video clips which will be accessed and play for 12 seconds every time a cosmic ray event is recorded by the detectors. The star bursts are made from cloud chamber footage. The size of the star burst will relate to the amplitude of the cosmic ray that hits the scintillator plastic. More energy = bigger starburst.

Testing testing. Running the cosmic ray detectors at my studio to see if I get similar results to at home and yes, seems fairly consistent. Maybe slightly more hits. Thinner roof!

Exciting developments in the acid room etching the directional magnetic steel sample I have been given. Trying to uncover the grain structure like a jigsaw pattern of this magical matter hidden under a grey coating. I had no luck trying to reveal the pattern just by sanding. I then tried sanding the coating away quite aggressively and etching in 1:4 nitric acid for 10 minutes. This did reveal the hidden structure but not very cleanly and weirdly sanding or polishing after etching made the pattern disappear again.

Then I tried finer sanding plus 10 minutes in a copper sulphate solution with just a careful wipe with a sponge to clean the plate and was quite happy how things were progressing. I quite like the coppery tinge.

I discovered the pattern comes from rolling single crystals of an iron silicon alloy into thin sheets to minimise magnetic losses for use in transformers. I decided to have another try with nitric acid on a larger piece just to compare but had very poor results.

An attempt with copper sulphate again on a larger piece this time wasn’t quite so clean as before although the structure is visible. I am wondering if there is a better side to etch – both sides look the same but maybe there is a difference in how deep the structure is hidden.

Working through some ideas for a proposal has helped with focus for video work using iron filings over a boulder (made from paper clay) set in a cave. Working title Belly of a Rock which will be a video sculpture.

The same with some experiments with vessels and salt crystals. Exploring possibilites.

Out of Studio

The Royal Society Summer Science Exhibition

Favourite stands were obviously those with a connection to magnets or cosmic rays.

Exciting research from a collaboration between the University of Birmingham, Keele University and
MICA Biosystems on remote controlled healing to treat spinal injuries and tissue regeneration using ground-breaking advances in nanotechnology and magnetics.

Magnetic nanoparticles exhibit superparamagnetism, meaning that these tiny magnetic particles flip magnetic orientation between north and south rapidly at random appearing to be non-magnetic unless subjected to a magnetic field. When a magnetic field is applied, the particles’ ‘north’ and ‘south’ align with the field direction, turning the nanoparticles’ magnetic properties ‘on’. By binding these nanoparticles to stem cells and injecting them into the body they can be directed to the target injury site using a controlled magnetic field outside the body. Once at the injury site the magnetic force can be turned on and off to stimulate the cells controlling cell behaviour and biological pathways speeding up the healing process.

When a meteoroid survives a trip through the atmosphere and hits the ground, it’s called a meteorite.

The Natural History Museum were displaying meteorite samples including a large fragment of the Winchcombe meteorite, an extremely rare carbonaceous chondrite observed entering the Earth’s atmosphere as a fireball over Gloucestershire at 21:54 hours on 28 February 2021 and landing in a family home driveway. It was the first time in 30 years, a meteorite has been recovered in the UK. It’s unexpected arrival from the asteroid belt near Jupiter was captured on a system of UK Fireball Alliance cameras as well as local CCTV and doorbell cameras.

Most iron meteorites are thought to be the cores of asteroids that melted early in their history. The crystal structure (image left) known as Widmanstätten patterns in iron meteors forms from criss-cross plates of an iron-nickel alloy. Slicing the meteor at various angles reveals different patterns.

I was informed that this texture was made visible by etching the meteorite in hydrofluoric acid though it may also need polishing. This made me hopeful to reveal the hidden structure of the directional magnetic steel sample (image right) provided to me by Union Steel Products which is currently hidden by an opaque grey coating over a thin layer of smooth steel. I first saw this type of extra magnetic steel at the National Physical Laboratory open day. It is no longer manufactured in the UK and so am grateful for the sample.

Very excited to talk to Lancaster University about their new Extreme Space Weather Monitoring research. The first international network of ground-level neutron detectors to measure the number of high-energy charged particles striking the Earth’s atmosphere from outer space was established in 1957 but these used toxic materials and are costly to run so many were decommissioned. There are only 50 left worldwide and none in the UK. Lancaster are developing a new-generation radiation detector intended to help protect safety-critical systems and national infrastructure against the effects of severe space weather. Space radiation can affect aircraft systems, communications, and cause current surges in power grids and other ground-level systems. There are significant risks to the infrastructures we rely on in daily life so predicting solar storms could provide a warning to shut down or move vulnerable systems before they get hit.

I asked Professor of Space Physics Jim Wild and his colleague Andrew Parker from the school of engineering radiation protection dept. about the event count for my own cosmic ray detector and they thought it sounded about right. As I cannot be sure of the quality of my plastic scintillator the count may not be scientifically accurate in measuring all events but I can feel confident that events I do record and will use to trigger code to display video starbursts are from direct contact with a particle that has travelled from outer space.

Alienarium 5 Dominique Gonzalez-Foerster at Serpentine Gallery. Managed to miss the seductive glimpse of The Closed Planet and any holograms but did experience the VR though connections promised with other alien beings failed to materialize – there were other forms floating in the distance but no way to communicate. I suppose this reinforced the difficulty of cross being communication. The reading list turned to cushions had become a toddler soft play area and while the 360 panorama was impressive in scale and content included it felt ‘educational’ as opposed to enlightening.

Theaster Gates, the Serpentine Pavilion 2022 Black Chapel draws inspiration from many of the architectural typologies that ground the artist’s practice. It is impressive in scale and simplicity.

I am a big fan of Lindsay Seers work and loved the Artangel commission Nowhere Less Now at The Tin Tabernacle, Kilburn in 2012.

This was my post at the time;

Lindsay Seers work is narrative but is not a linear story. The past present and future entwine with the thoughts of multiple characters. Everything is connected but like in a dream those connections are just beyond grasp as they shift and change and merge. I wasn’t sure if I fell asleep or not, my eyes seemed to be open but I had those moments of falling from consciousness being tucked up in a warm blanket can induce. The haunting sea shanty played in the headphones ‘ the sea will take her slender body..’ over and over, a narrative from one side in Seers soft tone then someone speaks abruptly from behind, another voice is heard at a a distance, some music starts up and all the while the dual projections onto giant convex and concave spheres in the disorienting location of an upside down ships hull sweeps through history into a CGI future and back to the present. We were given a free book on exit, it is another layer to the whole experience and I have no idea what is true and what is fiction, this means the fantastical can appear to be reality and I like that. There are many things to wonder about in Lindsay Seers work. In Seers work the explanation about the work is part of the work and so may be just a fiction as much as the work itself.

Jump ten years to Cold Light a collaboration with Keith Sargent at Matt’s Gallery in their new swanky location at Nine Elms. Subtle intervention has been sacrificed for the installation which is engaging on a different more immediate sensory level of flashing lights on shiny objects. The work is inspired by the futurist Nikola Tesla and his experiments with electricity in the early part of the 20th century. Cold light refers to light produced electrically rather than by fire. The use of low-fi silver foil and extractor vent tubing, along with scaffolding and clunky robotics give an impression of the home inventor. This would have looked futuristic in Tesla’s lifetime. I experienced the VR CGI environment, it was cold place emotionally despite the pigeons which were apparently Tesla’s true love. Is this the CGI future alluded to in past work?

Fabulous work from Grace Ndiritu An Absolute River at Lux. An Absolute River’s title derives from Borges’ theories on the fluidity of time. Borges features as a fictional protagonist in Ndiritu’s Black Beauty, and his notion of “An Absolute River” was inspired by Heraclitus’ “No Man ever Steps in the Same River Twice”. Her films blur the lines between different time frames and explore themes of media, authorship and historical narratives, whilst expanding on notions of temporality. Her work is so good.

SPACE IS THE PLACE

What a joy to experience The Sun Ra Arkestra

In some far off place
Many light years in space
I’ll wait for you
Where human feet have never trod
Where human eyes have never seen
I’ll build a world of abstract dreams
And wait for you

The Ruins of Time at St. Augustine’s Tower, Hackney. “Tower” is part four of the “Ruins of Time” project, organized by LME (London – Munich Exchange) exploring the passage of time and its specific expression in the place, space and architecture of the site. Curated by Eleonora Bourmistrov and Milena Michalski who are exhibiting alongside Myra Brooklyn, Risha Gorig, Angelika Hofmann, Monika Kita, Brigitte C. Reichl, and Marcia Teusink. Many thoughtful works and a marvellous installation from Eleonora Bourmistrov.

The London Group exhibition including work from Victoria Arney (birdsong translated into woodcuts), Carol Wyss (examining the ribcage as protective enfolding), Sandra Crisp (blender generated molecules with embedded culture – a culture with culture) and Beverley Duckworth (Dust from the Sahara) in Catch Your Breath at Morley Gallery.

‘Catching one’s breath can happen if surprised, impressed or even shocked by something, such as an extraordinary object or image stumbled upon that instantaneously changes a familiar viewpoint. It can also be a time to pause or reflect and take stock.’

Working on The Breath of Stars I have been thinking about the breath and its active nature and inter-actions so it was interesting to see the many interpretations here.

Cloud Point at Paradise Row curated by Nicolas Bourriaud in collaboration with Radicants.

Text from the Gallery:

The artists (Nicolas Aguirre, Hicham Berrada, Marieke Bernard Berkel, Alice Channer, Pakui Hardware, My-Lan Hoang-Thuy, Zarah Landes, Estrid Lutz, Tala Madani, Pamela Rosenkranz) in this exhibition belong to a generation for whom no material is natural anymore. Matter, in its totality, is both form and content, subject and object, nature and culture. In other words, there is no neutral background in today’s images, but streams and active forces.

Cloud Point gathers artists who don’t consider objects, products or masses in their work, but rather the atomic structure of our surroundings, and theirs. They are particularly interested in the in-betweens — processes of liquefaction, moments of coagulation, condensation points… The emergence of this molecular gaze in contemporary art also reflects in theory and politics.

Politics goes molecular as Felix Guattari had already stated, in the 1970’s, talking about a necessary ‘molecular revolution’. We see how gas, oil, bacterias, viruses or chemicals become the new agents of History. Zygmunt Bauman analysed postmodern capitalism as a process of liquefaction of our institutions. Today Karen Barad describes matter, at its molecular stage, as pure ‘queerness’. And according to Rosa Braidotti, ‘Capital seeks and reduces body fluids to merchandise: the sweat and cheap blood of the labor force available throughout the Third World; but also the fluids of the desire of First World consumers who reduce their existence to a commodity by transforming it into a hyper-saturated state of confusion.’

I have returned to my BA dissertation from 2007 The Communication of Ecological Concerns Through Contemporary Artistic Practice to look at excerpts where I discussed the theories of Nicolas Bourriaud.

‘The intertwining of ecological and political processes with artistic practises is explored in conjunction with the particular theories of Bruno Latour, Nicolas Bourriaud and Zygmunt Bauman. These writers all speak of a need to establish new ways of communicating about the complexities of our relationships to our environments as we move through different spaces to those of the past. In light of this necessity, the precarious balance an artist must achieve to engage a contemporary urban audience with an environmental message, without losing sight of their aesthetic, or becoming embroiled in the nullifying production of commodity, is debated.’

‘Bourriaud documents the shift in focus from the visual to the relational during the 1990’s when new forms of communication  available through modern technologies coincided with an economic depression. For the artist there was a lack of funding for the spectacular but also the opportunity to experiment with spaces previously given over to exchange and barter. The artists took as their medium something they found lacking in  other areas of daily life; social relations which did not involve supplier-customer exchanges. The loss of personal interactions from daily life as more and more functions were performed by or through machines and computers were reborn in the processes of participatory practises where the audience was invited to experience rather than behold.’

‘An artwork’s short life span is not necessarily a reflection of the insatiable appetite of the gallery going public to consume and discard art as any other commodity. In using relational aesthetics the artist deliberately steps outside of this cycle. Artists who base their practises on exchanges of experience and communication through tangible means which have no value as art outside a temporal set of circumstances give the public a chance to experience a different type of social bond. From the ethos of relational aesthetics is born the possibility of art infecting the collective subjectivity. Artists whose work sidesteps the rules of the market place create a ‘social interstice,’ a small space in which to explore relations with the world. An interstice does not operate in the same way as a message, which is akin to advertising and belongs in the world of marketing. The space created must be inviting or intriguing to draw the audience into a realm of possibility, to start a conversation not give a lecture.’


I selected seven works alongside my own for an informal tour at Wells Art Contemporary to promote conversations inspired by the works. Shield – Peter Newell-Price, Chronologer (chalk and bone) – Paul Tuppeny, Screw Up Repeat – Kate McDonnell, Beneath the Heavens III – Kaori Homma, Route 339 – John Ball, Everyone was a bird – Caro Williams, Two-Sided I & II – Aliceson Carter.

Out of thousands of submissions, this year’s judging panel, Matthew Burrows MBE, Dale Lewis and Nana Shiomi, selected a shortlist of 120 artworks by 111 artists for the 2022 exhibition.

29 site-specific installations have also been selected by Clare Burnett and Jacquiline Creswell to stand as interventional responses to the architectural, spatial and spiritual aspects of Wells Cathedral.

New work has been framed – these pieces consider the potential for the human eye to perceive the Earth’s magnetic field. Research shows birds have this capability activated by molecules in the retina of the eye when excited by blue light. The molecules produce radical pair electrons sensitive to the magnetic field and as these molecules are found within the photoreceptor cells it is possible birds may visualise the magnetic field lines to aid navigation. A similar molecule is also found in the human eye and I am speculating that this is a sense we may once have experienced and could tap into again. It is of course the brain that must receive a signal from the eye by which we see. Independently of the cryptochrome molecule, research monitoring alpha wave activity shows the human brain does appear to be sensitive to a magnetic field albeit unconsciously.

The Compass Eye Etching with chinagraph pencil, magnets, iron filings

Pole Receptor 2022 27 x 27 x 3 cm Etching, magnet and iron filings

Framework made a neat job of the frames enabling the magnets to be released to reset the iron filings if necessary. The Compass Eye doesn’t have glass and maybe that was a mistake but I prefer the thin frame.

Progress is being made on new work Breath of Stars. This will be a screen based work triggered by cosmic ray activity. Every time an event is registered by a photomultiplier attached to a 5cm square piece of plastic scintillator, a star burst video image will flash up on the screen. The size of the starburst will correspond to the energy of the particle that has just arrived from space. The starburst videos are made in Adobe After Effects using footage from my cloud chamber experiments.

I have got some help with coding from gaming programmer Jamie Howard so am not feeling so out of my depth in the python maze. One problem we may have though is the shortage of Raspberry Pi processors. It could be months before we are able to get one with a high enough spec to process the video layering. In the meantime I am testing ideas and creating video clips.

It was wonderful to see so many people visiting the first Open Studios at Thames-side since 2019 despite the rail strike difficulties that weekend. The Compass Eye was hanging in the Thames-side Gallery Studio Holders Showcase exhibition. Thank you to everyone who came to visit and found their way to my studio, it was great to discuss everything from Plato to Planck.

Super happy to have my video Cosmic Chiasmus: crossing the universe included in the May Fair Showreel screening at the very smart May Fair Theatre as part of Mayfair Art Weekend. The departure point for the curated selection was the word ‘PROCESS’, which was inspired by the video work by Wolf Vostell, Auto-Faber (1973). It was a great experience to see all the amazing nominated films and meet the selectors -Elisa Tosoni, Angel Leung and Eugene Macki and art weekend project manager Cheri Silver.

What a lovely write up in the Winchester School of Art Yearbook 2022 from one of the Fine Art students on the Images In The Making sessions that I ran.

I am delighted that my installation The Forms has been selected for exhibition in the splendid Wells Cathedral as part of Wells Art Contemporary 2022.

Twelve aluminium plates in the shape of pentagons that together make up the net of a dodecahedron have been deep etched with imagery taken from data visualisation of dark matter provided to me by KIPAC, Stanford University. The etching process used a screen printed sugar lift technique where the bite was allowed to penetrate completely through the plate leaving holes in some areas.

Excited to be selected for a satellite exhibition at the international print conference IMPACT12 to be installed at a former police station in Bristol. At a distance will be shown in The Anxiety of Interdisciplinarity, an exhibition which seeks to reframe printmaking as a site of interdisciplinarity – a testing ground for ‘The important work…done at the surfaces between adjacent disciplines’ (Carter, 1998).

Drawing on the physical language of print that embodies touch, separation and mirroring the semaphore flags in this work have been printed using hand painted dye sublimation inks applied via a heat press. This process transfers the ink from a paper matrix onto the substrate textile. The image passes momentarily across space in a dematerialized state as vapour before being reformed as its mirror opposite.

Out of Studio

Billed as an immersive experience like no other Dreamachine offers a unique journey into the potential of your mind. Stimulated by strobe lighting playing rhythms on your eyelids and spatial sound fed directly into your ears, your mind creates its own images behind closed eyes. Inspired by a 1959 invention from artist–inventor Brion Gysin it has been reimagined by Collective Act, in collaboration with Turner Prize-winning artists Assemble, Grammy and Mercury nominated composer Jon Hopkins, and a team of leading technologists, scientists and philosophers.

It was pretty amazing. From a deep orange glow of swirling matter kaleidoscopic shapes emerge with geometric patterns that form and explode into vibrant pulsating honeycomb structures. Felt sure I was seeing some of my recent work in there. Swept away on a tide of colour with a big smile it was like a roller coaster ride through the forming of a technicolour universe. Wonderful.

Interesting to read that the frequency range of light emitted by Brion Gysin’s Dream Machine corresponds to alpha waves, electrical oscillations normally present in the human brain while relaxing. The pulsating light stimulates the optical nerve and alters the brain’s electrical oscillations. I have been looking at scientific research that explores a connection between the Earth’s magnetic field and human vision when stimulated by blue or polarised light depending on the orientation of the viewer. The human brain’s alpha waves can be seen to react to the local geomagnetic field. Some research correlates the nature of our dreams to magnetic field activity with calmer dreams resulting from high activity and more bizarre dreams when activity is low.

Going from Dreamachine to Libby Heaney’s quantum world of morphing fluid shapeshifting worlds The Evolution of Ent @Arebyte was a nice continuation of mind bending immersion.

Ent-er. Ent-anglements. Ent-ropy. Ent-wining. Ent- hralling. Ent-icing.

Looking at the potential futures created by quantum computing where the digital mode of binary gives way to superposition and quantum entanglement. Daniel Cavalcanti has provided a useful quantum glossary in the exhibition catalogue. Explaining superposition as like looking through a window and seeing outside and yourself reflected simultaneously, two configurations happening at the same time.

I was very excited to visit The World of Stonehenge at The British Museum to see the Nebra Sky Disc, having been introduced to the existence of this amazing object by archaeoastronomer Carolyn Kennett while on the Lizard Point Residency in 2019. Found by metal detectorists in Germany the gold used in this ancient map of the cosmos can be traced to Cornwall.

Carolyn explaining the history of this most ancient of cosmological objects.

The actual disc was much larger than I expected and almost translucently thin.

Six thousand years ago in the final 1,500 years of the stone age was the British Neolithic period. A time of stone axes for chopping. Woodlands cleared for farming. Stone held meaning. Offerings were made to spirits. Hundreds of stone and wooden circles were raised across the land. A cosmic inversion, connecting earth to sky. The first stones were brought to Stonehenge about 5000 years ago to create a burial ground which was transformed 500 years later into the symbolic site where the large sarsen stones were placed in alignment with the sun as it rises at midsummer solstice and sets in midwinter. Some astonishing objects in the exhibition, the power of the sun celebrated and reflected in gold.

I had high hopes for Our Time on Earth exhibition in the Barbican Curve – the aim was for technology to bring us closer to nature and highlight our place as one species among millions of others, striving to live together in a delicate balance. There was some enticing imagery and interesting ideas but as an experience it was tech overload, information overload all crammed into quite a tight space. Too much to take in and too removed from a lived time on Earth for me to engage and absorb anything meaningful.

Postwar Modern at the Barbican Gallery explores the art produced in Britain between 1945 and 1965 in the wake of a cataclysmic war. Including; Denis Williams Painting in Six Related Rhythms 1954; Eduardo Paolozzi Will Man Outgrow The Earth? collage form the series Bunk 1952/1971; the lovely Aphra Shemza’s grandfather Anwar Jalal Shemza painting fusing Western ideas of abstraction with Eastern influence and Gustav Metzger Liquid Crystal Environment  made using heat-sensitive liquid crystals that are placed between glass slides and inserted into projectors where they are are rotated to create movement within the liquid causing the crystals to change colour as they are heated and cooled.

I was fascinated to learn about the numbering system used by Cistercian Monks while visiting the impressive ruins of 12th century Cleeve Abbey in Somerset. A single cypher can represent numbers up to 9999.

The abbey church was destroyed by Henry VIII during the dissolution in 1536 but the cloister buildings, gatehouse, 15th century refectory and 13th century heraldic tiles survived destruction as they were being used as farm buildings at the time and it’s ancient tiled floor was protected from the elements by a cabbage field.

The big excitement this month was to get the cosmic ray detector assembled and working. It may not look very exciting to see an LED flash but knowing it was caused by a tiny traveller from outer space I do find quite something to acknowledge.

The detector uses a small slab of plastic scintillator as a detection medium and a silicon photomultiplier (SiPM) for light collection from charged particles as they pass through the scintillator. Flashing the plastic block with light from a UV torch causes a big scintillation burst.

The signal from the photomultiplier is sent to an Arduino microprocessor which measures the amplitude of the signal. The small OLED screen updates every second and an LED flashes every time an event is registered.

I have the skills and patience of ABL Circuits to thank for soldering the tiny SMT components to the PCB boards and then working out which part had the fault and replacing it so that the correct voltage was supplied to the SiPM PCB. It needed to read approximately +29.5 V as anything over 30 might damage the SiPM so it was a big relief when this was achieved.

Once I had the printed circuit boards assembled I could wrap the scintillator plastic in foil, apply optical gel and attach it to the SiPM and then wrap this in electrical tape to make it light tight. I had a little bit of soldering left to do myself and then it could be slotted together.

When I had both detectors working independently I could set them up in coincidence mode to differentiate cosmic rays from background radiation particles.

The top detector is reading all local background radiation and the bottom one is just recording cosmic rays. The lights flash in unison when a particle travels through the top and bottom detector at the same time. The top detector labelled ‘M’ I will call mother and the bottom ‘S’ I will call son, (not the historical terminology suggested).

The horizontal lines record the energy of that particle – look out for the WOW particles!

So happy to have got this far with the project, now for the difficult bit translating that signal into an action triggering an interactive artwork.

Not only can cosmic rays be observed using a cloud chamber but they also trigger the formation of everyday clouds.

The Solar Wind is made up mainly of hydrogen and helium ions (ions are the nucleus of atoms separated from their accompanying electrons) known as solar protons. Travelling at up to 5 million miles per hour, the solar wind carries a million tons of matter from the sun into space every second. When massive amounts of energy stored in the magnetic fields of the sun are suddenly released in a solar flare explosion the particles are accelerated to even greater speeds.

Coronal mass ejections fire off great clouds of hot gas and the explosions are so powerful that they also rip away knots of magnetism from the surface of the sun which are sent sweeping past Earth deflecting the path of cosmic rays that would otherwise strike our planet. This effect is called the Forbush Decrease where increased solar activity results in a reduction of cosmic rays coming from outside our solar system.

Cosmic rays are super-charged subatomic particles produced by exploding stars, black holes and other phenomena many times more violent than any solar flare explosion but one coronal mass ejection can reduce cosmic rays for a few weeks and continued solar activity can keep cosmic ray counts low for sustained periods of time.

The Sun’s magnetic field goes through a cycle where north and south poles switch places about every 11 years. It then takes another 11 years for the poles to flip back again. Sunspot activity caused by the magnetic field are affected by the solar cycle but it is hard to predict how active a cycle might be. Usually at the beginning of the cycle there are fewer sunspots causing eruptions which then increase over time reaching solar maximum in the middle of the solar cycle before gradually retuning to solar minimum before the cycle begins again. The first solar cycle to be recorded was in 1751 and we are currently in cycle 25 with peak activity expected in 2025.

Research at the Technical University of Denmark has shown that the number of comic rays reaching the Earth has a significant impact on the warming of the oceans. When solar explosions deflect the number of cosmic rays hitting our planet there is a shortage of small aerosols – the chemical specks in the air that grow until water vapour can condense on them to become the water droplets of low-level clouds. The aerosol robotic network AERONETT also noticed a slight change in the colour of sunlight during times of low cosmic ray activity and found that violet light from the Sun looked brighter than usual. They put this down to the shortage of small aerosols usually provided by the cosmic rays which scatter violet light as it passes through the air. Without the growing aerosols, low-altitude clouds begin disappearing about a week after a Forbush Decrease minimum of cosmic rays. The water remains in the atmosphere in vapour form, but unlike cloud droplets it does not get in the way of sunlight warming the ocean. During solar maximum events the decline in cosmic radiation and the loss of low cloud cover persists for long enough to warm the planet.

“The effect of the solar explosions on the Earth’s cloudiness is huge. A loss of clouds of 4 or 5 per cent may not sound very much, but it briefly increases the sunlight reaching the oceans by about 2 watt per square metre, and that’s equivalent to all the global warming during the 20th Century.” Henrik Svensmark DTU

I have been testing new configurations of magnets for a large etching/drawing work looking at magnetoreception.

Also testing ideas for a magnetoreception performance mask. It became clear I will have to be careful with the iron filings around the eyes.

I was excited by the results of testing chine collé under black etching ink. It’s very subtle but I didn’t think it would show at all so was surprised and plan to try this with other ideas.

Great to see the launch of Yinka Shonibare’s new project Guest Artist Space in Lagos – this will be an international space for knowledge exchange between established and emerging artists, it will have urban and rural elements and involve local people as well as visiting artists for a true cultural exchange.

A video which I was invited to contribute to along with many artists Guest Projects has supported in the past is currently being shown as part of The Whitechapel Gallery exhibition programme A Century of the Artist’s Studio – Link to video here.

I am so grateful to Yinka Shonibare for his generosity and genuine interest in emerging and early career artists and awarding Laboratory of Dark Matters a month long residency that enabled us to achieve so much in 2017 including developing and running my first Cloud Chamber Workshops.

Exhibition Visits –

Gala Porras-Kim at Gasworks Out of an instance of expiration comes a perennial showing.

This wonderful exhibition is playful yet thoughtful, giving voice to the spirits of displaced, forgotten or overlooked fragments of history that have been institutionalised. The artworks suggest ways improve the material and spiritual conditions of artefacts stored in archaeological collections around the world such as re-aligning the sarcophagus or offering an awakening deity a more familiar prospect than the modern museum room in which it finds itself. Porras-Kim gives equal value to the dust gathering from artefacts stored in the back rooms of institutions and invites the spirits to communicate in the swirling patterns of marbling inks.

San Mei Gallery showing Laila Majid and Louis Blue Newby – not yet

Walls smeared with slime green are hung with prints on aluminium that shimmer in the low light setting with video morphing of a bubbling concoction of swamp things.

Noémie Goudal –  Post Atlantica at Edel Assanti

Luscious imagery dissecting the impact of deep time on landscape and climate.  

Berndnaut Smilde – Momentum at Ronchini Gallery

I was hoping to see a cloud produced in the gallery but had to settle for the documentation of previous clouds created in various locations presented in the Nimbus photography series. Apparently the artist very rarely makes this work as performance.

Shuster + Moseley – do not be afraid of the brilliant lights at Gallery Rosenfeld

Light bling of refraction and reflection when photons travel through a glass medium splitting and bouncing in reminder of its own physical presence

Also at Gallery Rosenfeld, Bongsu Park – in dreams we gather

Dreamscapes undulating through the darkness, echoing active brainwaves producing light within our sleeping skulls.

Rivane Neuenschwander Commonplace 1999 in Tate Tanks

Talcum powder is brushed into rectangular shapes on the floor, being remade every time it is exhibited. Simple gestures turn the stuff of everyday life into something unfamiliar and poetic.

James Freeman Gallery – Juliette Losq and Stuart Sandford in Elysian Fields

Interesting pairing of decay and perceived perfection.

Paintings rather than the layered installations I admire from Juliette Losq here. Delicate pale light seeping through these landscapes caught in the haze of a slow and gentle decomposition.

A close encounter with a full size Narcissus is only available through scanning a QR code to be experienced via the screen. Only his small pornworld counterparts were present, cast from the idealism of the digital realm into bronze.

Haig Aivazian All of your stars are but dust on my shoes at The Showroom

Two very moving films looking at light and fire, primordial gifts and how they are used for power and control.

Geo-poetic is a great description of how these films traverse history and borders exposing who decides what is seen and what is not and who holds the flaming torch over the touch paper.

Portals at Lisson Gallery curated by Ossian Ward

Images include Susan Hiller, Ryan Gander, Rodney Graham, Shirazeh Houshiary, John Latham, Mary Corse and Sean Scully.

A mixed offering of thresholds to alternative spaces, visible, conceptual, mythical or speculative.

Richenda Court Glass Town at The Muse at 269

Luminous work reflecting a fragile crystalline world

Good to see Lisa Pettibone’s suspended sculpture Instrument of Thought – A meditation on Matter and Light. The physics of the cosmos held in delicate balance as mirrored surfaces, crystals and rocks interplay hinting at ideas such as gravity, dark matter and the speed of light.

On Hannah Arendt: The Conquest of Space at Richard Saltoun with works by Sylvia Plimack Mangold, Elaine Reichek and Carey Young considering the question Has man’s conquest of space increased or diminished his stature?

The question is central to Arendt’s essay written in 1963 which rings alarm bells on the direction science and technology may be leading the human experience. The possible future Arendt foresaw of a world remade by the curiosity of the human race but transformed into somewhere unrecognisable to the humanist where even the scientist loses some essence of human nature as the world is described in a mathematical language that cannot be experienced with human senses may be bearing down upon us.

Lots to think about from this encounter. I think writing when she did, when the first man in space was quite recent history and before the internet, her concerns about a loss of what it is to be human, driven by technology effecting every part of our lives until there is no part left that hasn’t or isn’t in some way remade by humans was very prescient. I wonder how she would feel today as we rush into space like never before and not so much for exploration as exploitation. Arendt described herself as “a kind of phenomenologist” which I understand as looking at things purely as they appear to us without trying to explain why or how and accept meaning that comes from direct sensory experience. Works of art can act as mediators between the consciousnesses of the author and the reader as a direct attempt to communicate the experience of being human and the world around. Phenomenologists are interested in the way we come to share similar understanding of the world a collective subconscious or implicit agreement about how the world looks, sometimes referred to as the life-world.

An introduction to the essay link here presented by Roger Berkowitz, director of the Hannah Arendt Center at Bard College. Science transforms what it means to be human although we are still bound to our earthly bodies and subject to fate and fortune. Science does not give a human experience of the world, it confounds common sense. If our growth in understanding can only be expressed in mathematical terms then we have lost rather than gained a way of describing our world experience. Human thinking comes from metaphors and our thoughts are earthly, if we are taken off planet then the Earth becomes an object not our home.

Secret of Lightness at Parafin

Aimée Parrott, Andrew Pierre Hart, Tim Head, Andrea Heller, Laurence Kavanagh

Beautiful selection of works curated by Louisa Hunt that reflect the premise of Calvino’s text to pull against what holds us down and make a creative leap opening onto a new perspective.

‘Whenever humanity seems condemned to heaviness, I think I should fly like Perseus into a different space. I don’t mean escaping into dreams or into the irrational. I mean that I have to change my approach, look at the world from a different perspective, with a different logic and with fresh methods of cognition and verification. The images of lightness that I seek should not fade away like dreams dissolved by the realities of the present and future…’

Italo Calvino, Six Memos for the Next Millennium: Lightness (1985)

Of the Surface of Things at Alison Jacques showing works by Maria Bartuszová, Sheila Hicks, Hannah Wilke, Erika Verzutti.

Spending so much time thinking about the intangible it was refreshing to be exposed to some raw materials.

The curator refers to the 1919 poem ‘Of the Surface of Things’ of Wallace Stevens and the untethering of the imagination when exposed to the particularities of reality in simplified raw form.

In my room, the world is beyond my understanding;
But when I walk I see that it consists of three or four
        hills and a cloud. 

The fascinating and perilous journeys made by migrating birds has been a natural wonder for centuries with the first records of this phenomena made more than 3,000 years ago. The innate knowledge of migratory birds is mentioned in Job and Jeremiah and the ancient Greek writers Homer, Hesiod and Aristotle noted their passage.

Sensing the Earth’s magnetic field allows birds and other animals to determine their approximate position on the Earth. Research looking at how birds navigate over vast distances has shown many species are able to sense the compass direction of the Earth’s magnetic field and process this information. Non-migratory birds also have this ability using magnetoreception to orientate themselves in a local sense to map habitat.

There are two basic mechanisms involving magnetism used by animals; one method uses the iron based mineral magnetite found in the body’s cells and the other involves a protein found in the eye which is sensitive to light of different colours and intensities.

In plants and some animals, the light sensitive cryptochrome molecules are also involved in the control of the body’s circadian rhythms by tracking the difference between night and day. They can be found in cell nuclei of mammals and in the retina of several bird species. Ilia Solov’yov from the University of Southern Denmark has found the particular structure of cryptochrome Cry4 is unique and when light hits Cry4 cryptochromes in the eye of a migrating bird, they undergo chemical reactions that are influenced by the direction of Earth’s magnetic field, providing a signal of the bird’s orientation.

This light sensitive magnetic compass used by birds is affected by the polarisation direction of light. This was discovered by Rachel Muheim in a study where zebra finches were set the task of finding food in a maze. The birds were only able to use their magnetic compass when the direction of the polarised light was parallel to the magnetic field, when the polarised light was perpendicular to the magnetic field the birds became completely disorientated.

Researchers have put forward a theory that polarised light at sunrise and sunset accentuates the magnetic field at times when birds are ready to migrate or roost but in the middle of the day when the polarised light is approximately perpendicular to the magnetic field and less visible to them they can rely on sight to hunt and spot predators.

Magnetite is the most magnetic of Earth’s naturally-occurring minerals and microscopic particles are found in the cells of animals. Unlike the cryptochrome protein found in the eye and used by birds to perceive the Earth’s magnetic field, a magnetite-based magnetic sense does not need light to function.

Mole rats navigate their tunnels using this method which works like an internal compass. Birds also use this mechanism based on magnetite as an additional method to determine their position.

Sensing Earth’s geomagnetism is a functional ability seen in many creatures from bacteria and birds to turtles and bats. It is an evolutionary advantage to be able to orientate and navigate. Joseph Kirschvink and researchers at Caltech have completed experiments testing the human capacity to sense the magnetic field. Volunteers inside a chamber shielded from electromagnetic interference were subjected to an altered magnetic field while their brainwaves were monitored. The team found clear evidence that the subjects’ alpha brain waves were effected suggesting a rudimentary magnetic “sense”. The scientists believe that cells containing crystals of magnetite could register changes in magnetic fields and report this information to the brain. It is already known that magnetotactic bacteria have structures containing nanoscale magnetite crystals called magnetosomes that act as biological compasses, allowing the bacteria to navigate.

This research suggests that human alpha brainwaves react to a changing magnetic field. Alpha waves are always present, but are more prominent when in a relaxed and idle state of mind. Noticing a dip in the amplitude of the alpha waves would indicate the neurons in the brain becoming engaged in a task. The experiment was conducted to mimic how the Earth’s magnetic field would be experienced by the brain. The laboratory field was similar in strength to the Earth’s and the researchers moved it slowly to simulate how the field would change when turning one’s head. 

More experiments with iron filings, etchings and magnets.

Large etching on steel plate and small polymer etching.

Also some green screen filming towards the video work I am creating on this subject.

While back in the print studio I made some more prints of the mossy forest and added a little burst of colour.

A little progress with building the cosmic ray detector. I have drilled the holes in the plastic scintillator which was quite stressful as the project notes say it is easy to break. I did a test first in acrylic to gauge the size of the drill bit needed. The scintillator turned out to be much softer though and so I am hoping the holes are not too big now. I sent the Printed Circuit Board off to get the components soldered. I really wanted to do the soldering myself but am glad I went for help as there have been some issues with getting the voltage correct for the connection to the SiPM PCB.

I was lucky to grab a bargain box of Super 8 filming kit though haven’t had time yet to explore this fully and see if I can work out how to operate everything.

Out of studio

A visit to APT Gallery to see Periastra curated by Paul Malone looking at methodologies of curiosity within the fields of art and astrophysics.