Archives for posts with tag: geographic north pole

I am very grateful to a-n The Artists Information Co for awarding me a professional practice and creative development bursary to expand on my research and respond to the many ways Earth’s magnetic field impacts life on earth. The award will be used for a research trip to the remote location of Eskdalemuir Magnetic Observatory and Kielder Dark Skies Observatory. Fingers crossed for an Aurora experience. I will also gain expert tuition in concrete casting and mould making from Anna Hughes and make use of the facilities at The London Sculpture Workshop.

Domain of the Devil Valley Master – work in progress. It is likely that compasses were first used in China to divine an alignment of order and harmony for important sites and rituals. Jade hunters discovered they could also help to keep them from getting lost long before Europeans used them for navigation. The first mention of a south-pointer is in a fourth-century BCE text – The Book of the Devil Valley Master, and it is this that I am referencing in the title of this sculpture. Other references in the work are the rotation of the Earth’s core and geological formations of polygonal prisms. A magnetic domain is a region within a magnetic material in which the individual magnetic strength and orientation of the atoms are aligned with one another and they point in the same direction. The work uses directional magnetic steel stripped of its industrial coating to reveal the jigsaw pattern which comes from rolling single crystals of an iron silicon alloy into thin sheets to minimise magnetic losses for use in industry. The sheets have been sanded, etched, guillotined, treated for rust and sealed.

The Earth’s core is made almost entirely of iron and nickel. Siderophiles are elements that form alloys easily with iron and are concentrated in the Earth’s core. When the Earth formed about 4.5 billion years ago from the collision, accretion and compression of matter it was rock all the way through. Heat from the massive violence of formation and radioactive decay caused the planet to get hotter and hotter. After about 500 million years of heating up it finally reached the melting point of iron. As the iron liquified lighter material rose to the surface becoming the mantle and crust and the heavy metals like iron and nickel fell towards the centre becoming the core. The siderophiles that descended into the core are gold, platinum, and cobalt along with around 90% of the Earth’s sulphur. Hence the smelly sulphur vents around the volcanic regions.

Belly of a Rock – work in progress. Making paper clay discs to build the surface of this hybrid sculpture and crushing mussel and oyster shells to use as texture.

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, even this pole is not fixed. The magnetic north pole, also called the magnetic dip pole, is where the planet’s magnetic field is vertical and a compass needle here would dip and try to point straight down. The north and south dip poles are not found directly opposite each other. These dip poles are located by experiment in the field but as they are found in the most remote and harsh regions of the planet they are not easy to track. Also they can move around over considerable distances during each day, tracing out oval shapes as they are acted upon by dynamic electrical current systems of the magnetosphere, which are in turn defined by the activity of the solar wind. There is an equivalent (but fictional) magnetic dipole at the centre of the Earth assigned from global modelling of the geomagnetic field. These 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 Absolute Hut – work in progress. This installation is a reimagining of the Absolute Hut at Hartland Magnetic Observatory where monitoring of the Earth’s magnetic field takes place. Topological contours of suminagashi marbling also echo fluid magnetic field lines. Testing scale and alignment in the gallery space. Collecting planks for the north facing wall. Prepping the round window. Suminagashi experiments on different Japanese papers. I want to consider the hut as a sensory hub.

Other exciting news is that APT Gallery have selected a proposal for an exhibition which will take place in March 2024. The exhibition will consider the lifeboat as a metaphor in relation to uncertain times, ecological and social change and shifting landscapes as viewed from the land and the sea. The artists in this group show share an interest in exploring precarity as a site of dynamic transition. I am so happy to be working with these wonderful artists – Rachael Allain, Caroline AreskogJones, Beverley Duckworth, Liz Elton, Kathleen Herbert, Kaori Homma, Anne Krinsky.          

In celebration of World Metrology Day, NPL opened Bushy House and gardens to the public. A chance to see and hear about ever more accurate ways of measuring the physical world. Bushy House was the residence of William, Duke of Clarence (William IV) and his mistress Dora Jordan from 1797, and was offered to the Royal Society by Queen Victoria in 1900 as a location to establish The National Physical Laboratory. The impressive apple tree is from an offcut of one from Newton’s home estate. The magnetic laboratory here is concerned with devising and standardising the instruments used by magnetic observatories such as the one at Hartland that I visited last summer. I saw the 1kg sphere of single crystal silicon, with the smoothest polished surface of any made object and notoriously hard to photograph. The application of a strong magnetic field during the crystal growth process reduces contaminants giving a purer silicon crystal. Developments in technology bring new units and definitions of measurements.

From early concepts of number, patterns in nature (symmetry, branching, spirals, cracks, spots, stripes, chaos, flows, meanders, waves, dunes, bubbles, foam, arrays, crystals, and tilings) magnitude, and form came mathematics, meaning subject of instruction. This has evolved into complex theory from an understanding of negative numbers to imaginary numbers which combined with real numbers have been found necessary to describe quantum mechanics.

The colour coding of Saturn’s rings according to particle size used radio occultation to determine the different regions. Radio signals were sent from the Cassini spacecraft during orbits which placed Earth and Cassini on opposite sides of Saturn’s rings. This remote sensing technique measures how the radio waves bend around the matter they encounter to assess the physical properties of a planetary atmosphere or ring system. The purple colour indicates regions where most particles are larger than 5 centimeters. Green and blue shades indicate regions where there are mostly particles smaller than 5 centimeters and 1 centimeter. The white band is the densest region where radio signals were blocked preventing accurate representation in this area. The radio observations showed that all rings appear to have a mix of particle size distribution right up to boulder sizes, with several many meters across.

Gallery Visits

It’s Coming From Inside at Bell House, Dulwich. Curated by Sarah Sparkes and Jane Millar. In their thinking about the Impressionist Berthe Morisot, and the exhibitions broader theme of ‘Windows and Thresholds’, the curators see the two different domestic spaces, and the liminal corridors between them, as places expressive of dialogues in both Morisot’s and their invited artists’ works: of confines, dreams of escape, of external inscrutability and internal passion. Exhibiting artists: Fran Burden | Ruth Calland | Helen Carr | Mikey Cuddihy | Janet Currier | Robert Dawson | Andrew Ekins | Liz Elton | Lisa Fielding-Smith | Deborah Gardner | Caroline Gregory | Birgitta Hosea | Mindy Lee | Wayne Lucas | Julia Maddison | Jane Millar | Darren O’Brien | Kim Pace | Sarah Sparkes | Geraldine Swayne

Georgina Sleap Now and here and there together at Cable Depot. A residency undertaken in collaboration with Neil Cheshire, Olive Hardy, Mercedes Melchor, Agnieszka Szczotka, Derek Horton, Farida Youssef and Niamh Riordan. A wonderful installation conjured from simple materials and experimental technology, both analogue and digital that blur the here and there of time and space. Sounds of everyday street noise live from the artist’s Cairo balcony are streamed into the gallery where suspended torches project still slide images onto the wall or inside elongated sculptural forms. A loom for weaving a plain coffin shaped carpet hangs like a hammock next to CCTV recordings of yogic performance while a camera obscura style intervention casts shadows, bringing the local outside in.

The Shape of Things by Clan, a collective of multidisciplinary artists – Caroline Penn, Liz Lowe, Ashley Goldman, Nicky O’Donnell at Gallery 3, a delightful Georgian property in Margate. The artists examine issues of loss, both personal and environmental, that are balanced by ideas of hope and regeneration. A nice use of recycled and sustainable materials including netting from fruit and cable ties.

Beatriz Milhazes at Turner Contemporary. Perfect for a summer’s day at the seaside. Exuberant.

Opening event for the new photography centre at the Victoria and Albert Museum. Interesting to hear about the process Noémie Goudal undertakes to create her ambitious illusionist photographic sculptures such as Giant Phoenix VI from the series ‘Post Atlantica’ which has been acquired by the Victoria and Albert Museum for their photography collection, housed in a new dedicated gallery. This work was inspired by her interest in shifting landscapes, the movement of tectonic plates and how landmasses join and separate over millennia. There was also the chance to see her video Inhale Exhale along with behind the scenes footage of her technical team and the scale of the resources involved. Tarrah Krajnak has also had work acquired by the museum and read some of her poetry at the event. Her interests are also in discontinuity, severance and cataclysmic events but on a human scale. Being born from an act of violence she puts her own identity forward to explore power relationships.


Reading

I have really enjoyed the breadth of information delivered so beautifully by Hettie Judah in her book Lapidarium – The Secret Lives of Stones. The character described and stories told of each geological layer, formation, rock and gem brings to life a world often perceived as static, perpetual and dry. This book is a great resource and has been particularly appropriate for me in the run up to the exhibition A Stone Sky with Julie F. Hill as we explore the intimate connections between the rocky planet earth and space.

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