Centaur

Centaur (pronounced sen-tawr)

(1) In classical mythology, one of a race of monsters having the head, trunk, and arms of a man, and the body and legs of a horse (modern depictions in the age of the internet seem to prefer the upper body of a woman).  The synonym is hippocentaur.

(2) In astronomy, the constellation Centaurus (initial capital letter).

(3) In astronomy, any of a group of icy bodies with the characteristics of both asteroids and comets, orbiting the Sun in elliptical paths, mostly in the region between Saturn & Neptune.

(4) In modern slang, a skillful (male or female) rider of a horse.

(5) In rocketry, a US-designed and built upper-stage (with re-startable liquid-propellant engine), used with an Atlas or Titan booster to launch satellites and probes.

(6) In chess, team comprising a human player and a computer.

(7) By extension, in AI (artificial intelligence), a human and some form or AI, working together.

1325–1375: From the Middle English, from the Old English, from the Latin centaurus, from the Ancient Greek, from Κένταυρος (Kéntauros), thought to mean “a member of a savage race from Thessaly” although some etymologists are sceptical.  Historically, Thessaly was known as Αἰολία (Aiolía (Aeolia in modern use)) and that’s how it was referred to in the Odyssey (Homer’s epic poem from the eighth or seventh century BC); the gentlemen in Athens were quick to describe those from elsewhere as savages or barbarians, .  The half-human, half horse Centaur from Greek mythology belongs in the class of mixtumque genus, prolesque biformis (a mixed or blended race, offspring of two forms), the phrase made famous when it appeared in the Roman poet Virgil’s (Publius Vergilius Maro (70–19 BC)) Aeneid (29-19 BC) description of the Minotaur, the mythical creature with the head of a bull atop a human body.  The most common use of the adjective centauric was a reference to the mythological creatures (resembling or of the nature of a centaur) but in the sometimes weird world of spiritualism it was defined as "characterized by an integration of mind and body for consciousness above the ego-self" (whatever that means).  When the adjective is used in SF (SciFi or science fiction) it's with an intital capital if referring to the residents or natives of the constellation Centaurus.  The case difference matters because there no reason why in SF half human, half-horse beasts can't be part of the ecosystem in Centaurus and they would have to be described as Centauric centaurs.  In fantasy fiction, a centauress was a female centaur (a she-centaur) and the term centaurette has also been used; it does not (as the -ette prefix might be thought to imply) mean a “a small centaur”).  Presumably, a centauress, while possessing the secondary sex characteristics of a human female could, anatomically, in the hind quarters either colt, stallion, filly or mare so it could be helpful if authors differentiated centauress & centaurette thus.  Centaur & centaurdom are nouns, centaurian is a noun & adjective and centauresque, centaurial & centauric are adjectives; the noun plural is centaurs.

In the sky

Judy Volker’s annotation of Sea & Sky’s sky-chart of the Centaurus constellation.

Centaurus is one of two constellations said to represent Centaurs and is associated primarily with Chiron (Cheiron), a wise, immortal being who was king of the Centaurs and said to be a scholar & prophet skilled in the healing arts.  In some of the myths, from his cave on Mount Pelion, he is said to have raised, tutored, or counselled several figures prominent in Greek mythology, including Jason, Heracles and Asclepius.  Of Chiron's association with the constellation, there are several tales.  In one legend, Chiron was the first to identify the constellations and teach them to mortal humans, placing an image of himself in the sky to help guide Jason on his quest for the Golden Fleece.  A different story has Chiron placed in the sky by Zeus and of this telling there are variants but the most common element is Chiron being accidentally wounded by a poisoned arrow and giving up his immortality as a way to escape the never-ending pain.  A twist on this has Chiron simply bored with life and wanting it to be over and this came to the attention of Prometheus, the Titan undergoing permanent torture for stealing fire from the gods to give to humans.  For Prometheus to be released from his torture, an immortal had to volunteer to renounce eternal life and go to Tartarus in his place.  Someone (Zeus, Heracles, or Chiron himself depending on the author) suggested Chiron's offer be used to release Prometheus and for this Zeus honored Chiron with his place in the sky.  There’s even a tale in which the constellation represents the Centaur Pholus, honoured thus by Zeus for his skill in prophecy.

Centaurus, copperplate engraving by Polish astronomer Johannes Hevelius (1611–1687) from Firmamentum Sobiescianum sive Uranographia (1687), his atlas of constellations.

In English, the southern constellation of Centaurus has been so described since the 1550s but was known by that name to the Romans (to the Greeks it was Centaur).  The ninth largest constellation, visible in the far southern sky in the months around March, since classical times, it has been confused with Sagittarius.  In astronomy, a centaur is a small, icy celestial body orbiting the Sun in an in elliptical paths, most tracking between Jupiter and Neptune, the name gained from them typically having the characteristics of both asteroids and comets, that dual-nature the link with the half-human, half-horse from mythology.  Centaurs are considered transitional objects that may originally have been KBOs (Kuiper Belt Object) and often have unstable orbits due to gravitational interactions with the giant planets.  Orbiting mostly between 5.5-30 AU (an “astronomical unit”, the average distance between the Earth and Sun (about 150 million km (93 million miles)) from the sun, such is the gravitational effect of the big planets that most centaurs (which range in diameter between 100-400 km (60-250 miles) are expected over millennia to be sent into the inner solar system or even ejected into interstellar space.  Astronomers first became aware of the objects in 1977 with the discovery of Chiron but the technology of the time didn’t permit the structure fully to be understood and the body was thus initially classified both as a comet (95P/Chiron) and minor planet.  It was improvements in observational hardware which demonstrated that while appearing as asteroids, when closer to the sun the comet-like behavior of developing a coma or tail will manifest.  The largest known centaur is 10199/Chariklo.  Listed as a minor planet, it orbits the Sun between Saturn and Uranus and in 2014 it was announced it possessed two rings (nicknamed Oiapoque and Chuí after the rivers that define Brazil's borders), the existence confirmed by observing a stellar occultation.  One implication of the rings is it's likely it also has at least one shepherd moon and infrared images indicate the Chariklo is named after the nymph Chariclo (Χαρικλώ), the wife of Chiron and the daughter of Apollo.

On four hooves

Front (left) and rear (right) of the gatefold cover of the album Ride a Rock Horse (1975) by The Who's lead singer Roger Daltrey (b 1944).  The artwork was the work of his cousin Graham Hughes who produced a number of album covers during the 1970s.  Until the early 1980s when the CD (compact disc) reduced the size of packaging, the album cover was the most distributed form of pop-art. 

Things rarely were consistent in the evolution of the myths from Antiquity and the mythical centaurs were described variously as being wholly equine from (human) torso down or with the from parts of the legs also human, the latter a popular depiction during the Medieval period while in Classical era, they had four horses' hooves and two human arms.  Living on raw flesh and inhabiting mountains and forests, they were descended either from Centaurus (the son of Apollo & Stilbe) or of Ixion & Nephele although the Centaurs Chiron and Pholus were of a different descent lineage: Chiron was the son of Philyra & Cronus while Pholus was fathered by Silenus and born of an unnamed Nymph; what distinguished that pair was that unlike the other herds, they were hospitable and non-violent.  The cooking of food being a marker of civilization, it was recorded that when Heracles was hunting the Erymanthian boar, he visited Pholus who received him hospitably, giving him cooked meat whereas Pholus himself ate exclusively raw food.

When Heracles asked for wine, Pholus told him that there was only one jar, which either belonged communally to the Centaurs or had been a gift from Dionysus who had told them to open it only if Heracles should be their guest.  Telling his host not to be afraid, Pholus broke the seal but when the Centaurs smelled the wine they galloped from the mountains, armed with rocks, fir trees and torches to attack the cave.  The first two Centaurs to attack were Anchius and Agrius (killed by Heracles) but Pholus was killed in the aftermath of the fight: while burying a fallen Centaur he drew one of Heracles' poisoned arrows from a wound but it fell from his grasp, piercing his leg and almost instantly he died.  Heracles drove off the remaining Centaurs and pursued them to Cape Malea where they took refuge with Chiron.  In the ensuing battle Heracles shot Elatus in the elbow, but Chiron either dropped one of Heracles' arrows on his foot or was shot in the knee by Heracles.  The wounds of Heracles' arrows could not be healed and the immortal Chiron begged the gods to make him mortal.  It was Prometheus agreed to take on his immortality, and Chiron died, leaving most of the Centaurs to take refuge in Eleusis.  Their mother (Nephele) aided them by summoning a rain storm but that didn’t deter Heracles who slaughtered a dozen including Daphnis, Argeius, Amphion, Hippotion, Oreius, Ispoples, Melanchaetes, Thereus, Doupon, Phrixus & Homadus.

Wedding reception gone bad: Rape of Hippodamia (The Lapiths and the Centaurs) (1636-1637), oil on canvas by Peter Paul Rubens (1577-1640), Museo Nacional del Prado, Madrid, Spain.  The painting was one of a large cycle of mythologies by Rubens for the Torre de la Parada, Philip IV's (1605–1665; King of Spain 1621-1665 and (as Philip III) King of Portugal 1621-1640) newly built hunting lodge on the outskirts of Madrid.  One of Rubens’ oil sketches for the work is on display at Musees Royaux des Beaux-Arts de Belgique in Brussels, Belgium and is of interest to art students and critics because of the detail differences in the final composition.  On the basis of content shared on the internet, wedding receptions these days are sometimes torrid affairs. 

Lindsay Lohan AI generated as a centaur by EnjoyLingerie on DeviantArt.

The Centaurs also fought a legendary battle against the Lapiths (a Thessalian people who originally inhabited Pindus, Pelion and Ossa; they drove out the native people, the Pelasgians).  Pirithous invited the Centaurs (who regarded themselves as his parents) to his wedding feast and it went well until, unaccustomed to the effects of wine, the Centaurs became drunk and one of them tried to rape (in the classical sense of "abduction") Deidamia (Pirithous' bride and more commonly known as Hippodamia), resulting in a violent brawl which ended with the Lapiths driving the Centaurs out of Thessaly after killing many.  Containing so many wonderful subjects (Centaurs, a feast, a rape scene, a brawl), the disrupted wedding reception (which came to be known as “the Centauromachy”) for centuries drew artists to the theme.  In Antiquity, the Centaurs got a bad press because they appear in so many legends involving rape, abductions and violence.  In many ways the myths can be deconstructed as violent soap operas with an undercurrent of licentiousness, typified by the tales of Eurytion attempting to rape Hippolyta or Mnesimache, the daughter of Dexamenus.  In one version Dexamenus had betrothed his daughter to Azan (an Arcadian) and Eurytion (again as a guest at the wedding feast) attempted a kidnapping but she was saved by the hero Heracles arrived in time to kill him, returning bride safely to groom.  Most scribes were members of the Heracles admiration society and there also the story of how Heracles, on his way to Augias, seduced the girl, promising to marry her upon his return.  While he was away, forcibly she was betrothed to Eurytion but just as the wedding ceremony was about to begin, Heracles stormed in, killed the Centaur and had himself declared her husband.

Cupid and Centaur (1992), photograph by US photographer Joel-Peter Witkin (b 1939).

Based in Albuquerque, New Mexico, recurring themes in Mr Witkin’s work includes death and corpses (or dismembered body-parts), often artfully arranged for staged photo-shoots, his subjects including dwarfs, transgender and intersex persons.  As might be imagined, his images sometimes attracted controversy although some in the disabled community did praise his depictions of those living with a range of physical features not often documented in art.  Witkin claims his elaborate creations are not at all exploitative and are intended to “honor and elevate” those often neglected and “hidden from view”, rarely presented in an artistic context, motifs sometime drawn from paintings in both the sacred and secular traditions.  In an interview, Mr Witkin recalled his interest in what would many would think macabre was trigged when, as a child, he saw the decapitated head of a young girl killed in an automobile accident.

On four wheels

1976 Chrysler Centura GL.  Despite the visual resemblance, the (optional) styled steel wheels were unrelated to those used on Oldsmobiles between 1966-1987.

Whatever processes led to Chrysler Australia adopting the name “Centura” for their local version of the European Chrysler 180 (1970-1982) may still exist in the corporation’s archives but it seems the details have never been published though it can be assumed it was not an Anglicized adaptation of the Romanian centură (belt, girdle).  In Latin centum meant "one hundred" and the term centuria referred to (1) a unit of the Roman army, nominally consisting of 100 soldiers (historians suggest in practice the establishments varied between 60-160) and headed by a centurion, (2) in real estate a unit of area, equal to 100 heredia or 200 iugera (circa 125 acres (50  hectares)), (3) a group of citizens eligible to vote, the system apparently one of the reforms introduced by Servius Tullius (king of Rome 578-535 BC) and based on the ownership of land, one of the many systems which, over millennia, have codified a relationship between ownership of property (usually land) with a right to in some way participate in the polity (usually by voting) and (4) figuratively or literally, things in some way related to "100".  In modern Romance languages, things of course evolved: the Romanian centura (belt or girdle) was from the French ceinture (belt), from the Latin cinctura (girdle, belt), thus by extension used also to refer to the to beltways (ring roads) around cities.  In Spanish & Portuguese, the related cintura (waist; belt) is from the same Latin root cingere (to gird; surround).

The name of the short-lived Chrysler Centura (1975-1978) may have been an allusion to the Centaurs of myth because, like them it had a dual nature, combining the platform of a European four-cylinder with a much more powerful (and heavier) Australian built six.  That had been a concept Holden (GM's (General Motors) Australian outpost) in 1969 introduced when they installed their six-cylinder engine in a modified Vauxhall Viva and called it the Torana.  It proved a great success and Ford Australia in 1972 responded by fitting still larger displacement sixes to the Cortina which, being longer than the Viva, didn’t need the four inch (100 mm) stretch of the wheelbase required for things (tightly) to fit in the Torana.  Given the way local journalists would within a few years decry the inherently unbalanced Cortina six, it is remarkable how well the press received the thing upon debut.

1975 Chrysler Centura brochure shot (GL left; XL right).

Had the Centura been released in 1973 as planned, it might have found success but the timing was unfortunate, the decision by the French government of Georges Pompidou (1911–1974; President of France 1969-1974) to conduct tests of nuclear weapons in its South Pacific territories, prompting the leadership of Australian trade unions to blacklist French goods arriving in ports (Australian trade unions in those days running an independent foreign policy and the ACTU (Australian Council of Trade Unions) a kind of co-government).  As a consequence, it wasn’t until 1975 the Centura arrived in showrooms and by then the market had moved on, competition rather more intense.  Although the Centura offered class-leading performance (indeed, in a straight line it was quicker than many V8s) by virtue of its optional 4.0 litre (245 cubic inch) straight-six (even the 215 (3.5) version could run with the 4.1 (250) Cortinas), increasingly buyers were more tempted by the equipment levels and perceptions (sometimes true) of superior build quality and economy of operation offered by vehicles with origins in the Far East.  As it was, Chrysler in 1976 began local production of the Japanese Mitsubishi Sigma and it proved a great success, even without the six cylinder engine once thought such a selling point.  Tellingly, although a prototype Centura with a 5.2 (318) V8 was built, the project rapidly was abandoned.  Officially, the explanation was the body lacked the structural rigidity to handle the additional torque, the same reason Ford never contemplated their V8 Cortina entering production; engineers familiar with the structures of both platforms agree that was true of the Cortina but maintain the Centura was robust enough and suspect both companies, having observed the subdued demand for the V8 Holden Toranas (1974-1978) decided Holden was welcome to its exclusive presence in the niche sector.  Fewer than 20,000 Centuras were built during its dismal three year run, a fraction of what was projected as its annual production.

On three wheels

Rupp Super Sno-Sport, 1969.  If an object moves (or can be made to move), the chances are high an American will at some point have installed a V8.

Although it seems now the company’s best-remembered product, the Rupp Centaur was built only during 1974-1975 with production reaching barely four figures.  A fibreglass-bodied, wheeled tricycle available in red, white, blue, and yellow, the Centaur was something of a departure from Rupp’s traditional lines and its existence was a product of (1) climatic conditions, (2) a downturn in the economy and (3) the sharp increase in the price of gas (petrol), induced by the first oil-shock of 1973-1974.  Rupp Manufacturing had in 1959 been founded in Mansfield, Ohio by Herbert Edward “Mickey” Rupp (1936–2023), initially as a small-scale operation producing Dart Go-Karts but the venture proved successful enough for the company to expand and in 1960 a line of mini-bikes was introduced.  Simple to manufacture and sold with an attractive margin, the cash–flow enabled further development and by 1964 Rupp’s prototype snowmobiles had been sufficiently refined to be suitable for mass production, an encouraging 500 sold the following year, demand steadily increasing.  By the end of the decade, Rupp Manufacturing had a staff of over 400 and a catalogue of RVs (recreational vehicles) including mini-bikes, small ATVs (all-terrain vehicles) and a signature range of Sno-Sport snowmobiles, by then available in five models.  This being the US, there was also the sport of “snowmoble drag-racing” and Mickey Rupp fabricated the “Super Sno-Sport”, a genuinely exotic entrant using a special 308 cubic inch (5.0 litre) V8 from Ford’s racing research department with braking provided by a combination of disk brakes on the drive axle and a parachute, activated by a cable-release mechanism.  Whether it ever attained its theoretical maximum speed (150 mph (241 km/h)) isn’t clear but, in 1969, it was recorded at 95.5 mph (153.7 km/h) during a run at West Yellowstone.

Rupp advertising, 1970.

While the V8 Super Sno-Sport was a useful publicity tool, Rupp Manufacturing’s core business was more modestly powered snowmobiles and the company entered the 1970s as one of the industry’s most successful, annual production in 1970-1971 reaching almost 40,000 units.  However, while the economy was beginning to slow, what really affected things was two successive seasons of poor snow conditions, Rupp especially suffering because it had borrowed money to expand production and built up a large inventory of product to meet an anticipated strong demand,  With falling sales and rising debt-servicing costs, the rapidly dwindling profits of 1972 quickly became unsustainable losses and, in 1973, facing imminent bankruptcy, a controlling interest was sold to a investment group (what would now be called a PE (private equity) company).  The takeover provided the necessary injection of cash but of course involved also the inevitable “restructuring” (lay-offs and cost-cutting), leading to a market perception was of reduced quality and the possibility of Rupp being closed once the new owners worked out an asset-strip would likely be more lucrative than on-going production.  However, defying expectations, product development continued and in 1976 Rupp introduced its “Nitro” line of snowmobiles, now with liquid-cooled Xenoah power-plants.  These were a considerable technical advance and reviews were glowing but development costs had been high and the sector had become crowded; although sales were encouraging, profits became marginal as the machines often had to be sold at a discount.  In 1977, despite the publicity generated by the Rup 440 Nitro being capable of a genuine 80 mph (130 km/h), the company filed for bankruptcy, even a joint venture with the more stable Arctic Cat operation unable to stave off the inevitable.  In 1978, Rupp was wound up.

1974 Rupp Centaur (single seater).  Based on the photographic record, most buyers seemed to have chosen red.

The change in ownership and troubled history of the early 1970s explains the existence of the Centaur.  With an existing product line rendered unsuitable by the sudden decline in the snowmobile market, Rupp needed a new offering that could (1) quickly be developed, (2) be produced using existing assembly lines and (3) be sold at a price acceptable to its market segment and for that roll of the dice, planners settled on a powered-tricycle, a configuration familiar to customizers and specialist applications (police forces, postal services etc).  Rupp was targeting not commercial operators but the recreational market and that the machine would offer better fuel consumption than even small economy cars was an attraction, the project conceived when gas  had become not only suddenly expensive but also often scarce.  Unfortunately for Rupp, the scarcity didn’t last and in retrospect, even if it had, the Centaur’s many impracticalities might anyway have been enough to see it doomed (it was very much a “fun machine” for fine weather and the original version was strictly a single seater; in the recession year of 1974, it was not a compelling formula).  Although priced at US$1,700, for what one got, the cost-breakdown didn’t make sense for most because a small Toyota or Datsun could the leave the showroom for as little as US$2,800 and for that buyers got something that could seat five under a roof with a radio and heater.  Fun came at a cost and too few were prepared to pay the price.

1975 Rupp Centaur (two seater).

There was also the Centaur’s mechanical specification.  Designed originally to use the Volkswagen Type 1’s (Beetle) 1,285 cm³ (78 cubic inch) flat-four engine & transmission, the two companies couldn’t agree to terms so the tricycles were released with a 336 cm³ (21 cubic inch) two-stroke Kohler twin from the snowmobile line.  The fuel consumption certainly was low but while in the lightweight Centaur the VW engine would have delivered sparkling performance with an entertaining ability to cruise at 75 mph (120 km/h and by 1974 anyway unlawful because of a 55 mph (88 km/h) speed limit imposed nationally in as a “fuel-saving measure” by Richard Nixon (1913-1994; VPOTUS 1953-1961 and POTUS 1969-1974)), with the little two-stroke, only (a claimed) 55 mph was possible and at that speed the engine was very busy (and noisy), one reviewer remaking “one can almost hear it wearing out”.  Compounding the problem, the centrifugal clutch for the automatic transmission (an apparatus that had been a paragon or reliability in snowmobiles) proved troublesome when handing the greater weight and forces transmitted by the relatively wide contact area of the tyres.

Elvis Presley with 1975 Rupp Centaur, Memphis, Tennessee, 1975.  Keeping a cigarette burning while riding a motorcycle is a reasonable achievement.

Additionally, despite the minimalism of the body structure, flaws in the design (apparently a miscalculation of lateral loadings) meant the fibreglass had a tendency to crack, leading buyers unhappy and Rupp with expensive warranty claims.  It took not long for Rupp to work out the Centaur was not going to be the company's saviour but while a re-design was impossible and Volkswagen refused to lower the price of its engines, some adaptation was possible and in 1975 a two-seat version was released, obviously doubling the seating capacity but further adding to the weight and thus the load on the anyway hard-working engine and its vulnerable clutch.  Given all that Rupp probably did well to sell some 1,200 of the things over two years (although some are documented as lingering (discounted) on dealers’ lots as late as 1977).  One discerning buyer with a taste for the unusual was Elvis Presley (1935-1977) who purchased his in the summer of 1975 (it’s on display at Graceland) but he found the performance unsatisfactory (he was by then quite bulky which wouldn’t have helped) and after a few weeks replaced it with Super Cycle Stallion tricycle, powered by a Volkswagen flat-four.  It’s not known whether Elvis’s dissatisfaction with his Centaur was ever so intense he shot the thing (as he did when his De Tomaso Pantera refused to start) but his feelings were not unique because a number of the surviving Centaurs have been re-powered with Volkswagen engines and at least two have been converted to electric propulsion.

In art

Stormy Daniels (2019) drawing in ink, correction fluid & graphite on paper, by Robert Crumb (b 1943).  The image is available on the “Stormy Tee Shirt” (in black or pink) from Platform Art with 10% of sales revenue going to Safe Horizon, a New York-based organization supporting victims of domestic violence and sexual assault. 

It’s not known if  Donald Trump (b 1946; POTUS 2017-2021 & since 2025) is a student of Greek mythology (stranger things have happened) but he did provide us with his unique vision of the half-horse, half-human beast, labeling content provider, actress & director Stormy Daniels (Stephanie Gregory Clifford; b 1979) “horse face”.  In May, 2024, the memorable phrase returned to the news as matters came before court related to “hush money” allegedly paid to Ms Daniels (on behalf the of the President) in exchange for her maintaining a silence about a certain “intimate encounter” they had shared, their apparently brief tryst including her spanking him on the butt with a rolled-up magazine featuring his picture on the cover.  Mr Trump denies not only the spanking but the very encounter, claiming it never happened.  To give a flavor of the proceedings, at one point counsel asked Ms Daniels: “Am I correct in that you hate President Trump?” to which she replied: “Yes.”  No ambiguity there and although not discussed in court, her attitude may not wholly be unrelated to Mr Trump’s rather ungracious description of her as “horse face”.  Really, President Trump should have been more respectful towards a three-time winner of F.A.M.E.'s (Fans of Adult Media and Entertainment) much coveted annual “Favorite Breasts” award.

Death of a Centaur (1912), oil on canvas by Arthur Lemon (1850–1912).  For Lemon, the Centaur was what would now be called his "spirit animal" and the work was painted when he was close to death. 

Born on the Isle of Mann, Arthur Lemon spent his childhood in Rome before moving to California to work as a cowboy; there he became a devotee of what he would call en plain air (by which he meant “an outdoor life”).  Later he would return to Europe to study art and for the rest of his life he would travel between Italy and England where regularly he staged exhibitions at London's Royal Academy; his work most associated with scenes of the Italian countryside and the daily lives of the rural peasantry.  Lemon's fine eye for painting a Centaur was a thing of practice.  He became close friends with English artist Henry Scott Tuke (1858–1929), noted for his prolific output of works in the Impressionist tradition focused on nude adolescent boys and during the 1880s the pair for a time lived Florence where they “spent time sketching male nudes in the Italian sunshine.”  

The Wooing of Daphnis (exhibited 1881), oil on canvas by Arthur Lemon.

Daphnis possessed the youthful beauty of the kind idealized by Tuke and the many nymphs who so adored him.  A victim of that beauty, his life ended badly.  The artistic approach of Lemon and Tuke was interesting in that their nude youths often were shown in a contemporary setting and in that they differed from the many paintings and sculptures of Ancient Greek gods and mythological which, historically, enabled an exploration of the male nude without upsetting public decency; what Lemon and Tuke especially did was eroticise their young subjects.  From his time as a cowboy, Lemon was well acquainted with the physicality of the horse and knew from his studies that in Greek art Centaurs often were depicted as highly sexed figures; being not wholly human, Centaurs could be treated as creatures able to ignore the strict moral expectations of society and accordingly, formed their own community.  Lemon and Tuke in their own ways noted this and both took the Centaur as something of a model although while Lemon devoted much of his energy to painting horses, Tuke’s attention on the nude male youth was obviously his obsession.  After decades of little interest, in the more permissive atmosphere of the 1970s, Tuke emerged as a cult figure among those collecting gay-themed art but Lemon remained a footnote as a minor artist of rural life.

Entasis

Entasis (pronounced en-tuh-sis)

(1) In architecture, a slight convexity given to a column or tower, claimed to correct the optical illusion of concavity and create the perception of straight lines.

(2) In medicine and physiology, an involuntary or spasmodic muscular contraction (also called entasia (from the Greek ɛnˈteɪzɪə)).

(3) In typography & calligraphy, the thinning in the waist of a stroke, the technique used to compensate for the visual perception of a stroke with perfectly straight sides appearing slightly to bulge.

1745–55: From the Latin entasis, from the Ancient Greek ἔντασις (éntasis) (tension, straining), from εντείνω (enteínō) (to stretch or strain tight), the construct being enta, variant stem of enteínein (to stretch tight) + teínein (to stretch) + sis.  The –sis suffix was from the Ancient Greek -σις (-sis) and was attached to words in English often via Latin or French.  It was identical in meaning with the Latin –entia and the English –ing and was used (1) to form nouns of action or process (catharsis, dialysis, diagnosis, crisis etc), (2) in medicine to form nouns of condition (psoriasis, sepsis, tuberculosis, psychosis etc) and more generally (3) nouns as required (basis, oasis, thesis, stasis etc).  Entasis is a noun; the noun plural is entases.

The Entasis or Parthenon Principle

The Parthenon in Athens; it's the most celebrated use of entasis.

In modern architecture, entasis is the application of a convex curve to a surface for aesthetic purposes.  Its best-known use is in the columns from antiquity which curve slightly as their diameter is decreased from the bottom upward.  Because no relevant documents have yet been discovered, it’s not known whether the architects in antiquity applied the technique for aesthetic effect or as an engineering technique to enhance strength.  The latter is suggested by the design principle being described by Roman architect Marcus Vitruvius Pollio (circa 75 BC–circa 20 BC) using the Greek word enteino (to stretch or strain tight), suggesting some emphasis on structural strength rather than appearance.  However, until contemporary records are uncovered, their reasons for using entasis remain mysterious, hence the two-thousand odd years of conjecture.  The earliest known documented view of the matter was that written by Greek mathematician and engineer Hero of Alexandria (circa 10-circa 70), is that entasis corrects the optical illusion of concavity in the columns that the human eye would create if the correction were not made.  

Basilica's western front of the Second Temple of Hera, a Greek temple in Paestum, Campania, Italy.

The Second Temple of Hera (circa 55 BC) was built in the Doric order, just north of the first.  For the visual effect of entasis to work, the convex curve has to be so slight as to be imperceptible and it's not known why the Second Temple of Hera has an entasis so pronounced the curvature is obvious; there is illusion of straightness.  The proportions are such that historians have speculated it must have been deliberate (presumably for structural strength) but it's at least possible the architect was afflicted by the desire many of his modern contemporaries share: The wish to produce something "original" and "new", the reason why so many modern buildings are so unpleasing to the eye, architectural awards & prizes handed out not for beauty and elegance but novelty and shock.

For millennia, entasis and its place in the history of architecture has been one of the most persistent tales from Antiquity but there have long been contrarians prepared to argue the concept, while not exactly a myth, is greatly exaggerated in significance.  In September 2026, Belgian mathematician Professor Alain Goriely (b 1967; professor of mathematical modelling at the University of Oxford) published the findings of his study, challenging the belief the Parthenon’s “curves” were included to correct “optical illusions” that would have made pure straight lines appear “distorted”.  What the professor’s modelling was said to reveal was (1) the “curves” are practically imperceptible and the alleged “illusion” they were claimed to correct doesn’t exist; “the illusions are illusory”.  Deconstructing Vitruvius, the study begins with the claim the sides of the Parthenon’s stylobate (base) are not horizontal but form a very flat “V”, rising gently 60 mm (2.36 inches) towards the centre.  According to Vitruvius, this was to correct the illusion that, when viewed as a whole, the base appears to “sag in the middle”.  For centuries, the “sagging effect” was attributed to one of two “tricks of the light”: (1) That because of the way light is interpreted by the human brain, long horizontal lines “appear to slump” towards the centre or (2) That the structure’s marble columns create the illusion; this based on the “Hering illusion” (where in 2D (two dimensions) parallel lines can appear “bowed” when intersected by other lines).  Professor Goriely found nothing to support either proposition, noting the Hering illusion (discovered in 1861 by German physiologist Ewald Hering (1834--1918) is most apparent when lines intersect at acute angles and the Parthenon’s columns are anyway “too close to the vertical” to produce the illusion.  Additionally, extensive modelling produced no proof the effect would manifest on the Parthenon even in 3D (three dimensions), viewed from any angle.

The persistent claims of entasis.

Those details were really footnotes in architecture textbooks, entasis the most famous of the legends.  What that suggests is “bulges” in the Parthenon’s columns (the curvature called entasis) were included by the builders to correct an optical illusion that would make them appear “too narrow” in the middle.  Not only did Professor Goriely found no evidence the illusion exists but the columns bulge by a mere 18 mm (less than ¾ inch) which, at that scale, is simply not perceptible to the human eye at a typical viewing distance.  What he doesn’t dispute is the architects may have had some reason to include variations in the dimensions; it’s just he found no evident they were there as “optical correctives”, the slopes on the base perhaps there for a reason as mundane as preventing puddles forming after rain; as every builder knows, only a very slight incline is needed for water to flow.  The very minor increase in width in the columns’ centre sections is more mysterious and may have been something to do with what would have been a very labor-intensive production process but there seems to be no optical effect.

Beyond the math, Professor Goriely speculates the reason the myth has proved so enduring was the extraordinary level of veneration granted to the engineers, philosophers and architects of Antiquity when, in the late Medieval period and (especially) the Renaissance, so many of the texts were “re-discovered” and a the perception emerged of Ancient Greece as a supremely knowledgeable and ingenious civilisation.  For centuries, in Western Europe, the Classical World was idealized and unless explicitly disproved (as came to be done of their medicine, cosmology and such), the texts were treated with great respect, thought something of “Civilization’s gold standard”.  In the modern age, the veracity of what Vitruvius wrote tended to be reinforced by internet users repeating the tale, search engines affording a greater credibility to “facts” appearing in the greatest volume.  Now of course, AI (artificial intelligence) bots have centuries of architectural texts from which to harvest information and given what Vitruvius who wrote about the Parthenon (400 years after its construction), came to be treated as something “scriptural” (despite the loss of loss of the many Greek texts about their temple architecture he claimed to have read when preparing his own), the authority was strengthened.  Untypically for an academic paper, the professor recommends not too much dwelling on his findings but commending instead: “Trust your own eyes, question what you see and decide for yourself whether the theory of optical corrections holds up.”  Professor Goriely concluded entasis “might be the oldest myth that we have” before mischievously adding “apart from religion.”

1964 Rolls-Royce Silver Cloud III Flying Spur; coachwork by H.J. Mulliner Park Ward.

One orthodoxy to emerge in the twentieth century was the famous Rolls-Royce radiator grille owed as much to Classical architecture as to being something there to prevent stones damaging the fragile core behind; if Rolls-Royce was going to be influenced by anyone, it’d be the architects of Antiquity.  According to chapter 4 of The Lexicon of Rolls‑Royce (the company doesn’t have web pages, it has chapters), what it styles as the “Pantheon Grille” was “…inspired by Rome’s imposing Pantheon temple, the Rolls-Royce grille is iconic. The Pantheon’s majestic columns were purposefully built with wider middle sections so that the human eye perceives each long pillar to be completely straight. It’s a perfect optical illusion and a genius stroke of design.  Taking inspiration from this, the Rolls-Royce grille is tactfully arranged using wider columns at the edge and thinner columns towards the middle to create an aesthetic illusion of symmetry when admired from the front. It’s a design that appears more perfect than nature intended.”  The days are gone when Rolls-Royce’s documents were characterized by understatement (it once described its engines’ power outputs as “adequate”), the vulgar numbers revealed only when German regulators humorlessly insisted.

While Professor Goriely’s computer models could find no evidence of the effect, a century-odd earlier, Rolls-Royce’s designers were convinced by the optical tricks of the Greeks and in 1925 integrated one of their optical techniques their new grille.  Although the “squared-off” shell dates from shortly after the company’s formation in 1904, not until 1928 did the now familiar grille with its upright bars become standardized.  Prior to 1925, the radiators were fronted by horizontal “slats” best thought of as “louvers” in that they functioned like “venetian blinds” (controlled by a lever next to the driver) to enable the airflow to be controlled (thus regulating engine temperature).  By the time of the release of the model Twenty in 1928, improvements in thermal-management technology meant the slats were no longer needed so the designers could start with a “clean sheet” and, being Rolls-Royce, the went neo-classical and built their own Pantheon, refining the ideas first seem in 1925 on the “New Phantom” (known retrospectively as the “Phantom I” (1925-1931) after new generations of the model followed).  So, although Professor Goriely’s math couldn’t detect any evidence entasis produced a detectable effect for those looking at the Parthenon, what Rolls-Royce does has been modelled and although slight, the effect of their trick is real.

Lindsay Lohan in Rolls-Royce Phantom Drophead Coupé (2007-2017).  By the 1970s factory (mostly) had ceased to use the historic terms FHC (Fixed-Head coupé) and DHC (Drop-Head Coupé (DHC) and the revival in 2007 for the Phantom Drophead Coupé has proved (thus far) a nostalgic one-off.  Over the decades, the designers generally were successful in their adaptations as they were required to make the grille wider and lower but the Phantom would have benefited aesthetically if a more traditional approach had been taken with the headlamps (centre) and even hidden units (right) would have been more pleasing.  Still, twenty-first century customers seem more accommodating of stylistic innovation than earlier generations.

According to opticians, what the design does (wider bars at the edges, more slender towards the centre) is create the illusion of symmetry when viewed straight on (at even a slight angle there will be no effect).  That’s said to be because when viewing such a structure, the brain processes the image as a whole (not a sequence of individual bars) and, paradoxically, what the slight difference in width does is render an “artificial equalization”.   Because of the way the brain processes the sight of a series of “parallel bars”, were they equally-spaced and equally wide, there would be a “hollowing” effect with a “pinching” towards the centre, caused by the natural human tendency to perceive outer edges as tapering away.  The eye is an outgrowth of the brain and it’s the brain doing the processing; while “looking at a grill” might sound a simple task, in the Rolls-Royce grille there’s a lot of “information” and processing it all is an act of high-level cognition.

Hi-rise Pantheon: 1965 Rolls-Royce Phantom V.  This was about at tall as the grille got; it appeared on the Phantom V (1959-1968) & VI (1968-1990).

All else being equal, the brain tends first to focus on an image’s centre (that information sent to the fovea centralis (the part of the retina handling “sharp central vision”)) with the edges simultaneously entering the “peripheral vision” where spatial resolution decreases (the brain therefore gathering less precise detail about the outer dimensions).  All this happens in a fraction of a second but does still happen sequentially, the brain using “predictive modelling” to “fill in the blanks” and there is much to process, the grille a large, highly reflective three-dimensional object with repeating lines.  The brain’s visual cortex has much to do understand the contrasting light patterns and depth cues and that it does all this in a fraction of a second in an indication of how powerful a machine it is.  Additionally, Rolls-Royce further assists the brain in “manufacturing perfection by machining each bar with a very slight outward curve, not detectable to the naked eye.  The combination of this functionally imperceptible “width-shifting & curvature” uses the way the brain operates to induce the required corrective “shortcuts”.

The Pantheon Temple, Rome (left) and 1985 Rolls-Royce Camargue (right).

The Pantheon's Latin inscription M·AGRIPPA·L·F·COS·TERTIVM·FECIT isn't all that poetic and reads like a note the draftsman might have put on the blueprint (had there then been blueprints): it translates as "Marcus Agrippa, son of Lucius, made [this building] when consul for the third time.", crediting the Roman statesman & general, Marcus Vipsanius Agrippa (circa 63 BC–12 BC) who commissioned the construction during his third consulship in 27 BC.  The Pantheon that stands today was rebuilt by Emperor Hadrian (Publius Aelius Hadrianus, 76–138; Roman emperor 117-138) circa 126 AD after the original structure suffered severe damage in a blaze; Hadrian chose to retain Agrippa's inscription as a tribute (not all the emperors were narcissists).  Since 609 AD, the Pantheon has been a Roman-Catholic church and is known as the Basilica Santa Maria ad Martyres (Basilica of St. Mary and the Martyrs).   In 1975, when the Camargue (1975-1986) was released, the novelty of it being the first Rolls-Royce designed using exclusively metric measurements (except for the odd carry-over component) attracted little attention but there was much comment about it being the first built with anything but a perfectly vertical grille.  The Camargue's grille was slanted at a (for mid-century Rolls-Royce) rakish 7^o.

Waftability

Parthenon Grill, Murfreesboro, Tennessee.

Understandably, the malapropism “Parthenon grill” is sometimes heard (and there is a well-reviewed Greek restaurant in Murfreesboro, Tennessee of that name) and despite occasional claims, the Pantheon grille doesn't feature a classic entasis (slight swelling in the middle of a column to counteract the alleged illusion of concavity) but the slight curve of the bars is real and can be checked with equipment no more complex than a “straight-edge” (a 12 inch (300 mm)) metal ruler ideal for the purpose.  Although for much of the twentieth century Rolls-Royce was much associated with straight lines (the “knife-edge” models bodied by coach-builder Hooper between 1935-1959 the high point of the brief era of  blending of a severe rectilinearly with the flowing lines of the pre-war aesthetic although, despite the mix, the approach was not within the lineage of post-modernism) curves have often been a component and in 2009 Tom Purves (b 1949; CEO of Rolls-Royce Motor Cars 2008-2010) announced the neologism “waftability” was “the essence of the brand”.  That, he defined as “calm perfect motion and accelerating quickly without fuss”.  Back then (and 2009 seems now little less remote than the days of the Cold War (1947-1991)), the CEO was describing the relationship between the appearance of a static Rolls-Royce as something that embodied that definition, revealing the internal name for the “gentle, upswept line of the sill” on the new Ghost model was a “waftline” (actually borrowed from the fashion business), the idea being it created “a powerful, poised stance and makes the car appear to be moving when stationary.”

1988 Rolls-Royce Corniche Convertible.  Although rendered redundant by electric motors, the Pantheon Grille will endure; it will be wider and lower (as has already happened) and some functional use may even be found but as an essential element in “brand identity” it won't go away.

The significance of “waftability” was Rolls-Royce was then still in the business of making large-displacement engines running on fossil fuels sound and behave as if they were electric motors but, by 2023, the company announced the Spectre, the brand’s first purely electric car.  So it had taken a while but the interest in electric energy predated even the formation of the company in 1904.  Sir Henry Royce (1863–1933) was an engineer who had designed dynamos, electric crane motors and patented the bayonet-style light bulb fitting while Charles Rolls (1877–1910) as early as 1900 drove an electric car declaring it the almost ideal form of propulsion, observing: “The electric car is perfectly noiseless and clean. There is no smell or vibration, and they should become very useful when fixed charging stations can be arranged.  But for now, I do not anticipate that they will be very serviceable – at least for many years to come.”  So it proved.  By 2023 however, the technology was ready and so (more debatably) was the infrastructure and there is nothing better at waftability than something large, luxurious and electric, Rolls-Royce saying that some time in the next decade, their last car running on fossil fuel will leave the assembly line.  Nothing lasts forever and, having spent more than a century trying to make ICEs (internal combustion engine) as smooth and silent as electric motors, the times seem now to suit Rolls-Royce.  For others (such as Ferrari, Porsche, Dodge etc), selling to a customer base with an emotional attachment to the howl, throb & scream of gasoline (petrol) exploding in six, eight or twelve combustion chambers, the challenge is to find a way to make them content with a piped soundtrack.  Engineers have conquered matters of performance and even range but nostalgia may prove harder to package.  For Rolls-Royce however, the task is simpler because it’s purely visual: While an electric car needs no radiator and thus no protective grill, it can be guaranteed Pantheon Grilles, severely cut in stainless steel, will continue to appear.