Showing posts sorted by date for query Entasis. Sort by relevance Show all posts
Showing posts sorted by date for query Entasis. Sort by relevance Show all posts

Monday, May 1, 2023

Entasis

Entasis (pronounced en-tuh-sis)

(1) In architecture, a slight convexity given to a column or tower, as 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

Parthenon in Athens.

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 meaning "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 most celebrated construction is the Parthenon in Athens.

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

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.  That’s the reason Roll-Royce have always used a variation of the  technique in their upright grilles; it’s to make it appear as if built with columns of identical dimensions.

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

The Second Temple of Hera was built in the Doric order circa 455 BC, 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 it creates an obvious curvature, not an illusion of straightness.  The proportions are such that historians have speculated it must have been deliberate, presumably purely 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.

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) although and the revival in 2007 for the Phantom Drophead Coupé 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.  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 7o.

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

The Pantheon's Latin inscription M·AGRIPPA·L·F·COS·TERTIVM·FECIT actually 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 originally 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 AD 609, 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).

Despite the popular perception, what Rolls-Royce describes as their "Pantheon grill" doesn't feature a classic entasis (slight swelling in the middle of a column to counteract the illusion of concavity), the design does incorporate a similar visual effect: there is a (very) slight curvature which in the factory's vernacular is known as the "waftline".  Although there are, understandably, many references to the grill being the "Parthenon grill" (and there is a well-reviewed Greek restaurant in Murfreesboro, Tennessee called the Parthenon Grille), the factory has never used the term and say the designed was inspired by "Rome’s imposing Pantheon temple", a structure "...purposefully built with wider middle sections so the human eye perceives each long pillar to be completely straight."  What the architects of Antiquity did was use use an optical illusion as a "corrective" to achieve perfect visual symmetry and the Rolls-Royce engineers replicated the approach, the grill's columns wider towards the edges.  The waftline is used elsewhere, notably the gentle, upswept sweep along the sill-line which Rolls-Royce says "creates a powerful, poised stance and makes the car appear to be moving when stationary...", creating the impression of "calm perfect motion and accelerating quickly without fuss".  They clearly like the word "waft" because they coined the neologism "waftability" which is said to be "the essence of the brand".

The math of entasis.

Sunday, December 4, 2022

Corinthian

Corinthian (kuh-rin-thee-uhn)

(1) Of, pertaining to, or characteristic of Corinth, the ancient Greek city-state.

(2) One of the five styles of classical architecture in Ancient Greece (the others being Doric, Composite, Tuscan & Ionic).

(3) Something ornate and elaborate

(4) In literacy criticism, an ornate style.

(5) Something luxurious or licentious.

(6) A native or inhabitant of Corinth.

(7) Someone given to living luxuriously; dissolute.

(8) An amateur sportsman (archaic).

(9) A phony descriptor of a type of leather used by Chrysler Corporation in the US during the 1970s.

1350–1400: From the Middle English Corinthi(es) (the men of Corinth) from the Latin Corinthiī from the Greek Korínthioi.  The sense “of or pertaining to Corinth" the ancient Greek city-state is from the 1590s, gradually replacing the mid-fifteenth adjective Corynthoise.  The sense as a classification in what was becoming a formalised architectural order is from the 1650s.  The noun meaning literally "inhabitant of Corinth" dates from the 1520s; Corinthies was attested from the late fourteenth century.  During Antiquity, other Greek cities regarded the inhabitants of Corinth as a bit gauche, noting their preference for ornate, almost ostentatious architecture and their notorious fondness for luxury and licentiousness.  There was intellectual snobbery among the Athenians too, the Corinthians thought too interested in commerce and profit and not sufficiently devoted to thought and learning.  Corinthian the noun and adjective thus, in various slang or colloquial senses in English, came to be associated with extravagance, sin and conspicuous consumption, especially in the decades after the 1820s.

In scripture, the implications of that association were later reflected in the New Testament, most memorably in Paul’s Second Letter to the Corinthians (2 Corinthians 1).  The second letter is thought to have been written circa 56 AD, shortly after he penned the first and was addressed to the Christian community in city of Corinth, a major trading centre which, although by then noted for its rich artistic and philosophic traditions, was a place also of vice and depravity.  It was this last aspect that compelled Paul’s first letter to the Corinthian church and in it he sharply rebuked them for permitting immoral practices in the community.  In response, the Corinthians had cracked-down on some of the worst excesses and Paul wrote his second letter to congratulate them on their reforms and even commended forgiving sinners and welcoming them back to the flock.  Harsh though his words could be, Paul’s preference is always restoration, not punishment.  The letter then discusses some sometimes neglected characteristics of the Christian church such as generosity to others and devotes some time to defending himself against attacks on his ministry, reminding the Corinthians both of his own poverty and the harsh reality of what it meant to be a minister of Christ in the Roman empire: beatings, imprisonment, hunger, and the constant threat of death.

The triangle tattoo Lindsay Lohan had inked in 2013 was inspired by 1 Corinthians 13:4-8.  In the King James Version (KJV; 1611) it read:

4 Charity suffereth long, and is kind; charity envieth not; charity vaunteth not itself, is not puffed up,

5 Doth not behave itself unseemly, seeketh not her own, is not easily provoked, thinketh no evil;

6 Rejoiceth not in iniquity, but rejoiceth in the truth;

7 Beareth all things, believeth all things, hopeth all things, endureth all things.

8 Charity never faileth: but whether there be prophecies, they shall fail; whether there be tongues, they shall cease; whether there be knowledge, it shall vanish away.

Most quoted now are modern translations which are more accessible such as the International Bible Society's (now Biblica) New International Version (NIV; 1978):

4 Love is patient, love is kind. It does not envy, it does not boast, it is not proud.

5 It does not dishonor others, it is not self-seeking, it is not easily angered, it keeps no record of wrongs.

6 Love does not delight in evil but rejoices with the truth.

7 It always protects, always trusts, always hopes, always perseveres.

8 Love never fails. But where there are prophecies, they will cease; where there are tongues, they will be stilled; where there is knowledge, it will pass away.

In Paul’s prescriptive way, verses 4-7 details the workings of love in three steps.  There are firstly the positive aspects of love being patient and kind but then elaborated are the eight negatives love must never be: not jealous, boastful, arrogant, rude, irritable or resentful, nor does it insist upon its own way or glat at wrong.  Finally, Paul notes the five positive ways in which love reacts, joining in rejoicing at truth, supports, believes, hopes and endures all things.  Verse 8 returns to the theme of superiority of love but explicates the contrast between love and spiritual gifts as the contrast between permanence and transience; spiritual gifts which are incomplete will pass when wholeness comes whereas love will not.  The contrast is thus between the imperfect and the perfect.

United States Supreme Court, looking towards the West Pediment.

The Corinthian style of architecture was one of the five classical orders created in Ancient Greece.  Similar in many ways to the Ionic, the points of difference were (1) the unusually slender proportions, (2) the deep capital with its round bell, decorated with acanthus leaves and a square abacus with concave sides.  The Corinthian capital typically has two distinct rows of acanthus leaves above which appear eight fluted sheaths, from each of which spring two scrolls (helices), one of which curls beneath a corner of the abacus as half of a volute while the other curls beneath the centre of the abacus.  The marble pillars used on the east and west pediments of the United States Supreme Court building, constructed between 1932-1935, are a fine example of the Corinthian style.

United States Supreme Court, East Pediment.

Much less known than the more frequently photographed West Pediment, the East Pediment of the Supreme Court Building is at the rear of the structure and is much admired by architects because of the elegance of the thirteen symmetrically balanced allegorical figures in the sculptural group designed by Hermon A MacNeil (1866–1947).  The ornate details in the two rows of acanthus leaves are the defining characteristic of the Corinthian pillar.

Publicity shot for Chrysler Corporation's 1974 Imperial LeBaron four door hardtop finished in chestnut leather (right), the tufted “pillowed” upholstery a signature of the US luxury cars during an era in which they were forced to abandon high-performance.  Imperial's advertising copy noted of the brochure’s photograph: “...while the passenger restraint system with starter interlock is not shown, it is standard on all Imperials.” (the marketing types didn't like seat-belts cluttering up their carefully composed shots).  Although Chrysler only ever used the term “fine Corinthian leather” in the sales material for the Cordoba (1975-1983), it became common to refer thus to the leather in any of the corporation's carts of the era.  Some did with a sense of irony while some innocent souls actually believed it.

Corinthian leather was a term coined by the Bozell advertising agency in 1974 to describe the tufted upholstery available as an alternative to the standard velour in the Imperial LeBaron.  Although merely a term of marketing, the Imperials trimmed with the same leather produced by the Radel Leather Manufacturing Company of New Jersey the corporation used in its other up-market offerings, the name successfully conveyed the association of something rich in quality, rare, luxurious and, doubtlessly, "European".  Religiosity in the US somewhat more entrenched than elsewhere in the West, it’s likely many were sufficiently well-acquainted with the New Testament to understand the reference but for those less pious, Corinthian was one of those words which somehow carried the desired connotations, even among those with no idea of its associations.  Perhaps it was because it sounded European that some assumed the leather came from Spain, Italy or some such place where lots of words end in vowels.  Richard Nixon (1913-1994; US president 1969-1974) noted that linguistic phenomenon when he discussed the circumstances in which Dwight Eisenhower (1890-1969; US president 1953-1961) was compelled to dismiss his chief of staff (Sherman Adams (1899-1986)), who had accepted as a gift, inter alia, a vicuña coat.  Nixon observed that while there was no doubt most Americans had no idea whether vicuña was animal, vegetable or mineral, just the perceived mystique of the word was enough to convince them it was something expensive and therefore corrupting.

Ricardo Montalbán in 1975 Chrysler Cordoba advertisement.  The word "small" is relative, the significance being the departure from the corporation's long-standing policy of the Chrysler brand never appearing on anything but full-sized cars.

Whether the association with the Cordoba's fine Corinthian leather” generated many sales in Chrysler's other divisions (Plymouth, Dodge & Imperial) isn’t known but the the phrase certainly gained a remarkable traction amid the cacophony of exaggeration and puffery which sustains modern capitalism.  The Cordoba was introduced in 1975 as a "down-sized" model for consumers suddenly interested in fuel economy in the post oil-crisis world and the manufacturers knew those who felt compelled to buy smaller cars didn’t necessarily want them to be any less luxurious and that became the theme for the promotional campaign, led this time on television and fronted by a celebrity spokesperson, the actor Ricardo Montalbán (1920-2009).  Born in Mexico of Spanish descent, Montalbán looked distinguished and spoke in cultivated English with just enough of a Spanish accent to make plausible the link of fine Corinthian leather with cattle on the plains of Spain.

1975 Imperial LeBaron four door hardtop.

In the advertising, Mr Montalbán spoke of “the thickly-cushioned luxury of seats, available even in fine Corinthian leather” and although sometimes he’d call it  “soft” instead, all people seemed to remember was the leather was Corinthian.  So successful was the campaign that Chrysler decided to make the Corinthian label exclusive to the Cordoba and when Mr Montalbán was later assigned to advertise other Chryslers, in the same mellifluous tone, he commended only the “rich leather".  Later, when interviewed on late night television, cheerfully he admitted that the term meant nothing but that wasn't quite true: it meant whatever people who heard it wanted it to mean and that made it a perfect word for advertising.


The Rolls-Royce Camargue

Although it’s never been confirmed by the factory, one source claims that a consequence of Chrysler in 1974 conjuring up “fine Corinthian leather” was that Rolls-Royce was forced to abandon the idea of calling their new model the Corinthian, adopting instead Camargue, (a region on the Mediterranean coast in the south of France).  For Rolls-Royce, Camargue was probably a better choice, tying in with their existing Corniche two-door saloon (which many might have called a coupé) and convertible (by the 1970s factory (mostly) had ceased to use the historic terms FHC (Fixed-Head coupé) and DHC (Drop-Head Coupé (DHC) although there was in 2007 a nostalgic, one-off revival for the Phantom Drophead Coupé).  The French word corniche has certain technical meanings in geology and architecture but Roll-Royce used it in the sense of “a coastal road, especially one cut into the face of a cliff”, specifically using the imagery of the Grande Corniche on the French Riviera, just north of the principality of Monaco.  The factory had first used the Corniche name in 1939 for a prototype light-weight, high-performance car which could match the pace of the big, supercharged, straight-eight Mercedes-Benz able to explore Germany’s newly built autobahns at sustained high speeds never before possible.  The car was damaged during testing in France and was abandoned there after the outbreak of hostilities, only to be destroyed in a bombing raid although whether the Luftwaffe (the German air force) or the RAF (the UK's Royal Air Force) was responsible isn’t known.

1968 Bentley T1 Coupe Speciale by Pininfarina (chassis CBH4033).  It wasn’t as if Rolls-Royce weren’t aware of how Italians thought a Rolls-Royce or Bentley coupé should look.  The Speciale should have been a warning heeded although, to be fair, it probably is better than the Camargue.

So whether as some minor ripple of chaos theory or the factory always intended to continue allusions to continental geography, in 1975 the Camargue was released with few technical innovations of interest other than the automatic split-level climate control system which was an industry first and said alone to cost about as much to produce as a middle-class buyer might spend on a whole vehicle.  Other footnotes included it being the first Rolls-Royce designed and produced (except for the odd carry-over component) using metric measurements and the first with the famous grill inclined at (for mid-century Rolls-Royce), a rakish 7o rather than the perfectly vertical aspect always before used although the now noticeably lower grill was built still using the same technique the architects of Antiquity employed to create the clever optical illusion making the columns appear to the naked eye to be of identical dimensions although it wasn't the similar math of entasis, used for thousands of years to make slightly curved Corinthian pillars appear perfectly perpendicular.

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

The Pantheon's Latin inscription M·AGRIPPA·L·F·COS·TERTIVM·FECIT actually 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 originally 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 AD 609, 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).

Despite the popular perception, what Rolls-Royce describes as their "Pantheon grill" doesn't feature a classic entasis (slight swelling in the middle of a column to counteract the illusion of concavity), the design does incorporate a similar visual effect: there is a (very) slight curvature which in the factory's vernacular is known as the "waftline".  Although there are, understandably, many references to the grill being the "Parthenon grill" (and there is a well-reviewed Greek restaurant in Murfreesboro, Tennessee called the Parthenon Grille), the factory has never used the term and say the designed was inspired by "Rome’s imposing Pantheon temple", a structure "...purposefully built with wider middle sections so the human eye perceives each long pillar to be completely straight."  What the architects of Antiquity did was use use an optical illusion as a "corrective" to achieve perfect visual symmetry and the Rolls-Royce engineers replicated the approach, the grill's columns wider towards the edges.  The waftline is used elsewhere, notably the gentle, upswept sweep along the sill-line which Rolls-Royce says "creates a powerful, poised stance and makes the car appear to be moving when stationary...", creating the impression of "calm perfect motion and accelerating quickly without fuss".  They clearly like the word "waft" because they coined the neologism "waftability" which is said to be "the essence of the brand".

1973 Rolls-Royce Corniche Saloon (left) and 1975 Rolls-Royce Camargue (right).

In 1975 however, it's wasn't the almost imperceptible rake of the grill or the adoption of metric measurements which attracted most comment when the Camargue made its debut.  What was most discussed was (1) it being the world’s most expensive production car and (2) the appearance.  At that end of the market, the 30%-odd cost premium against the mechanically similar Corniche wasn’t going to produce the same effects in the elasticity of demand as would be noted lower in automotive pecking order and indeed, the Veblen effect can operate to make the more expensive product more desirable.  The consensus was the Corniche, although by then a decade-old shape, was better balanced and more elegant so for success to ensue, Rolls-Royce really were counting on Veblen to exert its pull.

Lancia Florida II (1957, left), Fiat 130 Coupé (1971, centre) & Rolls-Royce Camargue (1975, right).  The origin of the shape is most discernible in Pininfarina’s Lancia Florida, a different approach to the big coupé than would be taken in the 1950s by the Americans.  The late Fiat 130 coupé was one of those aesthetic triumphs which proved a commercial failure while the Camargue is thought a failure on all grounds although, for those who prize some degree of exclusivity, it remains a genuine rarity.  As it was, between 1975-1986, only 531 Camargues were sold (including a one-off Bentley version which was a "special order") while the Corniche lasted from 1971 until 1995, 6,823 leaving the factory including 561 Bentleys, the latter now much sought.  In a sense, the Camargue was ahead of its time because Rolls-Royce in the twenty-first century began offering some quite ugly cars and they have sold well, the Veblen effect working well.  

Unfortunately, the Camargue, while it did what it did no worse than a Corniche saloon, while doing it, it looked ungainly.  Styled by the revered Italian studio Pinninfarina, the look was derided as dated, derivative and clumsy and it’s this which has usually been thought to account for production barely topping 500 over the decade-odd it remained available.  In the years since, some tried to improve things and a number have been made into convertibles, an expensive exercise which actually made it worse, the roof-line one of the few pleasing aspects.  One buyer though was sufficiently impressed to commission a one-off Bentley version, one of the few instances of a model which genuinely can be claimed to be unique. The same designer at Carrozzeria Pininfarina who signed off on the Camargue was also responsible for the earlier Fiat 130 coupé, something in the same vein but on a smaller scale and the Fiat is a rectilinear masterpiece.

Platform by Mercedes-Benz, coachwork by Pininfarina.  1956 300 SC (left), 1963 230 SL (centre) & 1969 300 SEL 6.3 (right).

Whether the knife-edged severity of the 130 coupé could successfully have been up-scaled to the dimensions Rolls-Royce required is debatable but Pininfarina had lying around a styling exercise done years earlier, based on a Mercedes-Benz 300 SEL 6.3 and it was this which seems to have inspired the Camargue.  The Italian studio’s interest in Mercedes-Benz had in preceding decades produced some admired designs although the occasional plans for limited production runs were never realized.  In 1955, a coupé based on the 300b saloon had been shown, followed a year later by a 300 SC which most thought better executed, and certainly more contemporary, than the Germans' own effort.  The best though was probably the 1963 230 SL which lost both the distinctive pagoda roof and some of leanness for which the delicate lines are most remembered but it was thought a successful interpretation.  Mercedes-Benz should of course have produced a two-door 300 SE 6.3 because the W111/W112 two door body (1961-1971) was their finest achievement but the planet lost nothing by Pininfarina's take on the idea being rightly ignored.  In retrospect Rolls-Royce probably wished they too had "failed to proceed" and when the time came to do another big coupé, the job was done in-house, the Bentley Continental (1991-2003) an outstanding design and neither Rolls-Royce nor Bentley have since matched the timeless lines.