Every one knew how laborious the usual Method is of attaining to Arts and Sciences; whereas by his Contrivance, the most ignorant Person at a reasonable Charge, and with a little bodily Labour, may write Books in Philosophy, Poetry, Politicks, Law, Mathematicks and Theology, without the least Assistance from Genius or Study.

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Gulliver's Travels:
Voyage to Laputa

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Fanciful. Preposterous. Absurd.
Archive for February 2004
Fayoum Portraits

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The so-called Fayoum portraits, more than 1,000 of them, are the largest body of ancient portable paintings to have survived. They are portraits, painted mostly on wood, of men, women and children, young and old, believed to have been painted in their lifetime, sometimes framed and displayed in the homes, and later sawn to fit just inside the sarcophagus where they were placed on top of the face within the mummy wrappings to preserve the memory of the deceased...

Specialists in Graeco-Roman art regarded them as Egyptian, but Egyptologists considered them to be works of the early years of the Christian era when Egypt was under Roman occupation, and therefore out of their sphere. For too long art historians neglected these masterpieces. Today they are receiving their due, with one startling fact to emerge being the possibility that the portraits inserted into the wrappings of mummies may not be representative of Roman provincial art, as earlier described, but created by Egyptians for Egyptians. In other words, they may not be portraits of the Mediterranean aristocracy who controlled Egypt in Roman times, but of Egyptians themselves.

Some of the panels were painted in encaustic: natural powdered pigments mixed with melted beeswax and applied hot with a scalpel and brush for detail. Others, painted in tempera or a watercolour base, were badly affected by humidity in the soil. Some were on wooden panels, some on linen. Some depicted heads only, others were full- length portraits placed on top of the linen cloth that covered the corpses. There is every indication that the painted portraits served the same purpose and function as the painted cartonnage masks made of layers of linen or papyrus stiffened with plaster and decorated with paint or gilding that were introduced into Egypt in the First Intermediate Period, between 2181 and 2055 BC. These became increasingly popular in the Middle Kingdom, the XVIIIth and the XXVIth dynasties, as well as in the Graeco-Roman period, to assist in the identification of the deceased. In fact, in the Graeco-Roman period hollow, painted plaster heads and painted portraits began to be used alongside cartonnage masks. Continuity can be traced provided one looks at the portraits painted in Roman times from an Egyptian perspective. Looked at from a local angle, foreign influence in these great masterpieces may extend no further than a stylish Roman hairdo or the fashionable drape adopted by aristocratic Egyptian families. [link]

An Ancient Egyptian funerary mask

A sculpted portrait placed on a coffin

A painted portrait of the boy that dates to the early Christian era
A woman wearing jewellery. This and the previous portrait were removed from their mummy wrappings

Update: in the comments, talos drew my attention to two excellent online galleries of Fayoum portraits:
A gallery of many of these portraits - in French - can be found here. Gallery from an exhibition in Crete titled "from Fayoum to early byzantine icons", here - in Greek! Collections 1-4 are Fayoum portraits, 5-8 are byzantine icons.

Having seen these from up close, I can only describe as haunting.
Also if you haven't already done so, be sure to check out his blog Histologion. It's been in the blogroll over there on the left for some time now so why haven't you?


Apollo landing sites

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This image of the Apollo 17 landing site was taken in 1972 from the Command Module from about 100 kilometres above the Moon's surface. The resolution is good enough that you can actually see the Lunar Module and its shadow. Click on the image to be taken to a panoramic view of the surface.

Explore other Apollo landing sites here.
Maxwell's Tartan

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Using a technique essentially identical to that perfected by Sergei Mikhailovich Prokudin-Gorskii, the renowned physicist James Clerk Maxwell produced the world's first colour photograph in 1861.

A proud Scotsman, Maxwell's subject matter was a tartan ribbon
He had the photographer

Thomas Sutton

photograph a tartan ribbon three times, each time with a different colour filter over the lens. The three images were developed and then projected onto a screen with three different projectors, each equipped with the same colour filter used to take its image. When brought into register, the three images formed a full colour image.
The History of Naming

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To Tate
Happy Birthday




love from
Aunty Lou, Uncle Graeme,
Hayden, Kelda,
Carrick and Barret




XXXXXX 000000

-- inscription found on a second-hand kid's book,
dated 1986

Joshua is the new John.

Being, as I am, the last individual in the world to be ever named John, I am quite interested in the history of naming. So much so, in fact, that I have bothered to compile for your reading enjoyment an analysis of child naming trends over the past 800 years. This analysis is based on figures collected in Britain and the US and for brevity I am only looking at male names although the history of female names will no doubt become the subject of a future post.

The graphs below show the ranking order of the top twenty names over time. While ranking doesn't convey a sense of relative population sizes, names like many things follow a power law distribution. During most of the period, at least up until 1800, 25% of the male population had the top ranked name, 50% had one of the top three names and over 80% had one of the top ten names.

The period up until 1300 is one of considerable movement as many of the names which had been common before the Norman Conquest (names such as Radulf, Herbert, Hugo and Asketill) were replaced with Norman ones. After that time, however, a period of remarkable stability sets in with the top three spots being occupied by John, William, Thomas for well over five hundred years.

The Renaissance and Reformation saw the addition of new names to the top twenty, most notably the biblical name Joseph and the reassertion of the royal name Henry. Interregnum and Restoration greatly improved the fortunes of the royal name Charles while the biblical (and royal) name James made steady ground throughout the entire period.

The Industrial Revolution around the turn of the nineteenth century unquestionably produced a great deal of social dislocation and upheaval but shifts in name usage really only started to be felt towards the end of that century. While the top ten names varied little for most of this period, there was a significant decline in dominance of all of the major names. At the beginning of the nineteenth century, the top ten names represented more than 80% of all male names but by 1900, this figure had dropped to less than 50%. It would continue to drop during the course of the twentieth century.

World War II saw the beginning of a trend in which all of the traditional names went into steep decline. Already by the late nineteenth century, the name Thomas had lost its place in the top three to James but John and William continued to do well right up until the end of the 1960s. They were joined by the newly resurgent Robert and Richard but the name Henry had by then completely fallen out of the top twenty.

By 1970, however, with the notable exceptions of Joseph and William, all of these names had begun falling from favour.

The twentieth century also saw the addition of several new names to the top twenty. Donald (originally a surname) was an early favourite but it quickly faded after the war. Baby Boomers made the biblical names Michael, Matthew, Daniel and David popular. The saint name Christopher also became popular at this time.

By the year 1970, the percentage of mindshare owned by the top ten had dropped still further to around 30% and the top name was now borne by only 5% of the male population.

It was in this context that yet another batch of names surged to the fore. Once again these were dominated by the names of biblical figures and saints but the old practice of adopting surnames as first names (originally as a way of preserving the mother's maiden name) finally started to produce a significant number of top twenty names.

Two observations about the current top twenty names. Firstly, many of them are already in decline. With an increase in the rate of new name invention inevitably comes an increase in name extinction and by all indications, at least half of them will not be dominant in the next decade. Secondly, they are not representative of the top names in non-American English speaking countries.

The data that I used for the post-1880 names came from the U.S. Social Security Administration and while naming trends in Britain and the Australia have followed pretty much the same pattern as in the US, the post-1970 name choices are different and reflect different recent social histories and different constellations of soap opera characters. Britain's top ten includes names like Jack, Thomas, Oliver and Benjamin while the Australian top ten contains names like Lachlan, Ethan and Liam.

The biblical name Joshua is looking like a keeper in all three countries though.

The data for the pre-1880 names came from Douglas Galbi's interesting site about names, naming and the information economy.
Sometimes the world really is in black & white

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This is an early colour photograph taken by Paul Castelnau in June 1917. It shown French troops standing out the front of a destroyed house near the village of Eglingen in Haut-Rhin in France. Castelnau took this image using the autochrome process invented by the Lumière Brothers (also famous as pioneers of cinematography).



Autochrome of the ruins of the city of Reims, 1917.

Note in the last picture the deterioration in the autochrome's multi-layer plates which has led to a loss of pigmentation on the right half. Of course this subject matter hardly does justice to the autochrome technique, I was just drawn to the haunting quality of these images.

For a few more autochromes see Mark Twain in Colour.

(Reposted from Feb 04)
Buddhabrot

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The Buddhabrot Set is a re-visualization of the familiar Mandelbrot Set using a technique invented by Melinda Green. Instead of selecting points on the real-complex plane, initial points are selected at random from the image region. The point is iterated through the function, z = zˆ2 + c, where z has components in both the real and imaginary planes.

If the particle escapes (exits the viewing area with high speed), its path is reiterated, exposing its position onto the image surface with each step. In this fashion, areas of dense particle travel appear bright white. The result is an amazing universe of structure, spirituality, and mathematical intrigue.

Generate your own with this Java applet (spotted at leuschke)


Update: PF points out to me that a much clearer explanation of this algorithm can be found at Melinda Green's own fractal website. Furthermore she introduces us to many other variations on this theme including a Buddhabrot generalization in four dimensions.


The Buddha in profile.


He no longer saw the face of his friend Siddhartha, instead he saw other faces, many, a long sequence, a flowing river of faces, of hundreds, of thousands, which all came and disappeared, and yet all seemed to be there simultaneously, which all constantly changed and renewed themselves, and which were still all Siddhartha. He saw the face of a fish, a carp, with an infinitely painfully opened mouth, the face of a dying fish, with fading eyes--he saw the face of a new-born child, red and full of wrinkles, distorted from crying--he saw the face of a murderer, he saw him plunging a knife into the body of another person--he saw, in the same second, this criminal in bondage, kneeling and his head being chopped off by the executioner with one blow of his sword--he saw the bodies of men and women, naked in positions and cramps of frenzied love--he saw corpses stretched out, motionless, cold, void-- he saw the heads of animals, of boars, of crocodiles, of elephants, of bulls, of birds--he saw gods, saw Krishna, saw Agni--he saw all of these figures and faces in a thousand relationships with one another, each one helping the other, loving it, hating it, destroying it, giving re-birth to it, each one was a will to die, a passionately painful confession of transitoriness, and yet none of them died, each one only transformed, was always re-born, received evermore a new face, without any time having passed between the one and the other face--and all of these figures and faces rested, flowed, generated themselves, floated along and merged with each other, and they were all constantly covered by something thin, without individuality of its own, but yet existing, like a thin glass or ice, like a transparent skin, a shell or mold or mask of water, and this mask was smiling, and this mask was Siddhartha's smiling face, which he, Govinda, in this very same moment touched with his lips. And, Govinda saw it like this, this smile of the mask, this smile of oneness above the flowing forms, this smile of simultaneousness above the thousand births and deaths, this smile of Siddhartha was precisely the same, was precisely of the same kind as the quiet, delicate, impenetrable, perhaps benevolent, perhaps mocking, wise, thousand-fold smile of Gotama, the Buddha, as he had seen it himself with great respect a hundred times. Like this, Govinda knew, the perfected ones are smiling.

-- Hermann Hesse, Siddhartha
Hanging Gardens

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The Hanging Gardens of Babylon
Athanasius Kircher, Turris Babel 1679
The Underwater Cities of Japan

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If you spend much time diving for esoterica in the depths of the World Wide Web, sooner or later you are likely to bump into those great submerged monoliths known as the Underwater Pyramids of Japan.

I first posted about these on Metafilter in 2000 but even back then there were greybeards who remembered them with nostalgic affection.
A STRUCTURE thought to be the world's oldest building, nearly twice the age of the great pyramids of Egypt, has been discovered. The rectangular stone ziggurat under the sea off the coast of Japan could be the first evidence of a previously unknown Stone Age civilisation, say archeologists. The monument is 600ft wide and 90ft high and has been dated to at least 8000BC. The oldest pyramid in Egypt, the Step Pyramid at Saqqara, was constructed more than 5,000 years later.

Continue reading...

Filthy Habit

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Continue reading...

The Magical Number Seven

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It seems like I'm really into circular images at the moment...

The Table of the Seven Deadly Sins, Hieronymus Bosch 1504 (Prado Museum, Madrid).
P.O.V. of God looking down at the sinful world including depictions of the Seven Deadly Sins: (starting from the bottom and proceeding anti-clockwise) Anger, Pride, Lust, Sloth, Gluttony, Avarice and Envy. In the centre appears the risen Christ and the inscription in latin “Beware, Beware, God Sees you". In the corners Bosch depicts the four stages of man: Death, Judgement, Hell and Heaven.
...what about the magical number seven? What about the seven wonders of the world, the seven seas, the seven deadly sins, the seven daughters of Atlas in the Pleiades, the seven ages of man, the seven levels of hell, the seven primary colors, the seven notes of the musical scale, and the seven days of the week? What about the seven-point rating scale, the seven categories for absolute judgment, the seven objects in the span of attention, and the seven digits in the span of immediate memory?
Yeah, what is it with that? George A. Miller, in a classic paper from 1956 explores a bit of the cognitive science lying behind the numerology of the number seven.

Update: Globetrotting blogger PF (who is now living in Istanbul after a lengthy stay in Siberia) says that the Bosch picture above reminded him of The Wheel of Samsara which illustrates the essense of Buddhist teachings. It enumerates the six worlds of Buddhist cosmology, the worlds of gods, men, animals, Hungry ghosts, warring titans and Hell (which comes in both hot and cold varieties). Not a seven in sight however.


The text in the linked article gives a good rundown of the Wheel but the images are unfortunately fairly poor so he has also provided links to this exquisite gallery of Himalayan Art which has many high resolution, zoomable versions of the Wheel.


The Floating Islands of Zacatón

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Cenotes are karst formations which occur when underground water etches away at limestone bedrock to form enormous subterranean caverns. Eventually the cavern roofs collapse leaving deep circular rock pools. The word cenote is a Spanish rendering of the Mayan word d'zonot which means literally "a hole in the ground".

In northeastern Mexico, there is a group of five interconnected cenotes, one of which is known as Zacatón. At a depth of 305 metres, it is the deepest in the world and it is also nearly perfectly circular with a diameter of approximately 116 metres. The cenote is primarily of interest to divers who enjoy exploring this seemingly bottomless abyss and it was the scene of the world's deepest cave dive (one which tragically claimed the life of one of the divers who was drowned at a depth of 276 metres).

However, this cenote is also interesting for some notably laputan reasons...

In 1795, Félix María Calleja, viceroy of New Spain, wrote: “there is a large cave lit by natural skylight; and 200 varas from this cave there is a deep cavity that has a lake with an island.” The lake he was referring to was the

Zacatón cenote which, in fact, contains fifteen islands

however this detail may have been overlooked by Calleja because he may not have realised that the islands actually move about quite freely upon the surface of the rock pool.

The islands are made from lush mats of reeds which, in the absence of any current in the water, are propelled solely by the power of the wind. They are roughly circular in shape and have steep sides from regularly bouncing off the sheer walls of the cenote (and off one another) . Their vary in size from 3 metres to 10 metres in diameter.

The waters of Zacatón are warm (30 C) and highly mineralised, they also give off a sulphurous odour and while it is still unknown exactly how the islands formed, one theory has it that the vegetation originally colonised rafts of calcium carbonate which had precipitated out of solution and formed a buoyant membrane on the surface.

Other lakes with floating islands have been written about at various times. Athanasius Kircher in the seventeenth century apparently described a group of islands known as the "sixteen little boats" which floated in a lake now known as Lago della Regina near Tivoli. Unfortuantely for me, I wasn't able to find an online version (let alone a translation) of his Latium; id est, Nova & parallela Latii tum veteris tum novi descriptio (1671). However a contemporary of his, Francesco Lana Terzi, had this to say about the islands in his Magisterium naturae, et artis (1684):
"I myself saw several of these islands in a small lake of sulfurous water not far from the Tiber; they were mostly circular or oval, and rose four or six inches above the water. Their surface is flat and grassy, and at the edges of some of them a few larger plants grow, which act as sails, so that even the slightest breeze pushes the islands from one part of the lake to another. The largest of them are a few yards in diameter, yet nonetheless can sustain several men standing upon them."
Even though they don't exist today, the lake is still known in the tourist literature as Lago delle Isole Natanti ("Lake of the Floating Islands").


Fifteen hundred years earlier, the keen eye of Pliny the Younger observed a similar lake. It was known as Lake Vadimon and was the scene a major defeat of the Ethuscans and Gauls in the year 471 BC.
I went up to this lake. It is perfectly circular in form, like a wheel lying on the ground; there is not the least curve or projection of the shore, but all is regular, even and just as if it had been hollowed and cut out by the hand of art. The water is of a clear sky-blue, though with somewhat of a greenish tinge; its smell is sulphurous, and its flavour has medicinal properties, and is deemed of great efficacy in all fractures of the limbs, which it is supposed to heal. Though of but moderate extent, yet the winds have a great effect upon it, throwing it into violent agitation. No vessels are suffered to sail here, as its waters are held sacred; but several floating islands swim about it, covered with reeds and rushes, and with whatever other plants the surrounding marshy ground and the edge itself of the lake produce in greater abundance.

Each island has its peculiar shape and size, but the edges of all of them are worn away by their frequent collision with the shore and one another. They are all of the same height and motion; as their respective roots, which are formed like the keel of a boat, may be seen hanging not very far down in the water, and at an equal depth, on whichever side you stand. Sometimes they move in a cluster, and seem to form one entire little continent; sometimes they are dispersed into different quarters by the wind; at other times, when it is calm, they float up and down separately. You may frequently see one of the larger islands sailing along with a lesser joined to it, like a ship with its long boat; or, perhaps, seeming to strive which shall outswim the other: then again they are all driven to the same spot, and by joining themselves to the shore, sometimes on one side and sometimes on the other, lessen or restore the size of the lake in this part or that, accordingly, till at last, uniting in the centre, they restore it to its usual size.

The sheep which graze upon the borders of this lake frequently go upon these islands to feed, without perceiving that they have left the shore, until they are alarmed by finding themselves surrounded with water; as though they had been forcibly conveyed and placed there. Afterwards, when the wind drives them back again, they as little perceive their return as their departure. This lake empties itself into a river, which, after running a little way, sinks underground, and, if anything is thrown in, it brings it up again where the stream emerges.

—I have given you this account because I imagined it would not be less new, nor less agreeable, to you than it was to me; as I know you take the same pleasure as myself in contemplating the works of nature. Farewell


See also:
The Unusual Cenotes of Tamaulipas
Preliminary Note on the Floating Islands of Zacaton Sinkhole, Mexico
Farthest Known Object From Earth Detected

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In a discovery that offers a rare glimpse back to when the universe was just 750 million years old, a team of astrophysicists said they have detected a tiny galaxy that is the farthest known object from Earth.

"We are confident it is the most distant known object," California Institute of Technology astronomer Richard Ellis said Sunday of the galaxy, which lies roughly 13 billion light-years from Earth.



The team uncovered the faint galaxy using two of the most powerful telescopes — one in space, the other in Hawaii — aided by the natural magnification provided by a massive cluster of galaxies. The gravitational tug of the cluster, called Abell 2218, deflects the light of the distant galaxy and magnifies it many times over.



The magnification process, first proposed by Albert Einstein and known as "gravitational lensing," produces double images of the galaxy.



"Without the magnification of 25 afforded by the foreground cluster, this early object could simply not have been identified or studied in any detail with presently available telescopes," said astronomer Jean-Paul Kneib, of Caltech and the Observatoire Midi-Pyrenees in France.


[link]


Note: the gravity lensing effect causes a double image, hence the two highlighted areas on this image.




Flat Out

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Update: Sorry for the lack of activity on this site lately. I'm pretty busy getting some work projects finished as well as preparing to take some annual leave after that. In other words, things are likely to be pretty quiet around here for at least a month.

I'll be taking a computer with me but I don't expect to use it much.



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