Showing posts with label Physics. Show all posts
Showing posts with label Physics. Show all posts

Monday, May 13, 2024

Wimp

Wimp (pronounced whimp)

(1) A weak, ineffectual, timid person.

(2) In particle physics, a speculative particle: Weakly Interacting Massive Particle.

(3) In computer science, a summary of the elements of the graphical user interface (GUI): (Windows, Icons, Menus (or Mice), Pointing device (or Pull-down menus).  

1915-1920: In the sense of "someone weak or timid", it's an Americanism of uncertain origin although etymologists have concluded it almost certainly is a back-formation from whimper.  The earliest known use in print dates from 1920 but it seems not to have re-appeared until 1960 although wimpish persisted.  In the US, the meaning must by the 1930s have had some currency because two pop-culture characters used a form of nominative determinism (a relationship between an individual's name and their qualities, habits or vocation) in their names: J. Wellington Wimpy who was devious but cowardly and the quiet, ineffectual Wallace Wimple.  The idiomatic form "wimp-out" is a synonym of "chicken out" and often used as "wimped out".  The use by the US Marine Corps (USMC) as the abbreviation for "weak in mountain phase" was a way of expressing an opinion of those cadets who lacked the endurance or other qualities demanded by the "mountain phase" of training conducted in Dahlonega, Georgia.  The use in computer user interfaces is said to date from 1980 and have been coined by computer scientist Merzouga Wilberts, about whom little appears to be known.  The name "Merzouga Wilberts" may have started as some sort of in-joke which has come to be spread by the internet (a la the "inventor of the toaster") and the credit for the pioneering work on computer GUIs is usually afforded to the work done by Xerox Corporation's PARC (Palo Alto Research Center) during the 1970s.  Less well-known use as an acronym in computing includes Windows Interface Manipulation Program, Windows impersonator and (as WiMP), Windows Media Player.  The spelling whimp was probably an imperfect echoic for the time when use was predominately oral.  Wimp is a noun, verb & adjective, wimping & wimped are verbs, wimpish & wimpy are adjectives; the noun plural is wimps.

The biggest data

Based on the biggest data sets ever gathered, cosmologists use mathematics to calculate the actual parameters of the universe and the numbers which have emerged from the equations suggest some ninety percent of matter (or energy) has yet to be discovered, observed or defined.  One possibility is mechanical; the math is wrong.  The other explanation is the data is incomplete because or means of measuring or observing the cosmos is not able to see anything.  Scientists, as impressed as economists by the beauty of their mathematical models, prefer the later.  To account for all that’s “missing”, they speak of dark matter and dark energy and divide their energies between looking for the dark stuff and developing theories which might explain its nature.

Weakly interacting massive particles (wimps) emerged as one theory; a speculative particle thought wholly or partially to constitute what is commonly referred to as "dark matter" but which may be "dark energy".  The theory suggests a wimp interacts via gravity and any other forces and is inherently non-vanishing in its strength.  For the theory to work, wimps must date from the earliest moments of the Universe and be "cold" dark something because modelling of a universe full of cold dark matter produces a distribution of galaxies close to what we today observe.  However, a simulation with hot dark matter reduces a universe to a sort of cosmic sludge.

Wimps may be out there and if they're they're there, they're everywhere.  Enhanced images from the Hubble Space Telescope.

The term "weakly interacting massive particles" was coined by US theoretical physicist Pierre Sikivie (b 1949) in 1983 but the underpinnings of the concept lie in the work of two US theoretical physicists Howard Georgi III (b 1947) & US theoretical physicist Sheldon Glashow (b 1932) who in 1974 published what is considered the first “grand unified theory”, a framework which could accommodate “everything” in the universe and thus explain its structure and formation (though not the origin).  Immensely influential, physicists, cosmologists & mathematicians have since been “plugging-in” data and theories to this now much-modified framework.  Georgi & Glashow had proposed entities which behaved like stable, weakly interacting massive particles as a possible explanation for dark matter but it was Sikivie who came up with the memorable term.  In the way these things happen in science, there are also now SWIMPs (super weakly interacting massive particle) and GIMPs (a class of SWIMP which interacts only gravitationally).

String theory: Lindsay Lohan in string bikini, Mykonos, Greece, August 2014.

In the mysterious world of particle physics, this stuff is understood by a relative few and even among them there are disagreements but the hypothetical WIMPS can be described as particles which interact through the weak nuclear force and gravity, but not through electromagnetic or strong nuclear forces, which is why they are considered “weakly interacting”.  Speculative theories in physics have become not uncommon because, although in the last hundred-odd years the understanding of the universe has been transformed, the “standard” model of the place contains anomalies and into these gaps, theories are plugged.  WIMPs however are like the various flavours of string theory in that while there’s a perfect internal logic, not only have the notions never been tested but it not possible to design a test.  Despite that, such is the mathematical elegance that some hypothetical entities and structures are so compelling that adherents cling to them with the driven intensity of seventeenth century Jesuit priests.  Still, the WIMP is an attractive candidate as at least part of the explanation for dark matter because, as described, they fulfil a number of what all in the field agree are critical criteria:

Stability & longevity: To exist as imagined, WIMPs must be very long-lived and inherently stable, enabling them persist throughout cosmic history.  That doesn’t contradict the notion of “nothing lasts forever” because need last only between time beginning and ending and it’s assumed both states either have happened (perhaps many times) or will happen.

Abundance: There is nothing to suggest any reason why WIMPS couldn’t have been produced in the earliest moments of the universe and thus been an inherent part of cosmic inflation, meaning they might exist in sufficient quantities to account for the observed amount of dark matter.

Strength in interaction with other stuff: The WIMP’s weak interactions would explain why they’ve yet to be detected, such is the rarity with which they interact with ordinary matter.

So, although wimps remain wholly hypothetical, assuming the math is correct, wimps do successfully fill the astrophysical gaps and there is a near consensus today among cosmologists that most of the mass in the Universe is dark.  That said, the answer remains, “don’t know”.

Saturday, May 4, 2024

ACL

ACL (pronounced eh-see-elle)

The abbreviation for anterior cruciate ligament, one of a pair of cruciate ligaments in the human knee.

1887 (in Italian); early 20th century (in English): The construct was anterior + cruciate + ligament. Anterior was from the Latin anterior (that is before, foremost).  Cruciate was from the Latin cruciatus, the perfect passive participle of cruciō, from crux (cross).  Ligament was from the Middle English ligament, from the Latin ligāmentum, from ligō (tie, bind).  The vital but unexciting body part sounds much better if spoken in other European languages including Portuguese (ligamento cruzado anterior), Spanish (ligamento cruzado anterior), Catalan (lligament encreuat anterior), French (ligament croisé antérieur) and especially Italian (legamento crociato anteriore).  Anterior cruciate ligament is a noun; the noun plural is anterior cruciate ligaments.

In the world of acronyms and abbreviations, there are literally dozens of other ACLs including the American Classical League which promotes the study of Antiquity and the classics, the Association for Computational Linguistics, a professional organization for those working on natural language processing, the Australian Christian Lobby, a right wing Christian pressure group which disapproves of the last three centuries-odd, the Access Control List, an element in computer security, ACL2, a modular software noted for its theorem prover, as code ACL, Akar-Bale language, an extinct Great Andamanese language (ISO (International Standard) 639-3), allowable combat load, in military aviation, the inventory of weapons system for which an airframe is rated and the wonderful anthroponotic cutaneous leishmaniasis, a form of Old World cutaneous leishmaniasis, usually with a prolonged incubation period and confined to urban areas.

The long and painful history of the anterior cruciate ligament

Ligaments of the right knee.

Descriptions of the anterior cruciate ligament (ACL) appear in some surviving medical texts from Antiquity, the earliest known reference thought to be in the drawings of the physician Galen (Claudius Galenus or Aelius Galenus; 129-216) although he made no mention of injuries associated with this body part, the aspect for which it’s now best known although there is evidence of corrective surgery being undertaken in Ancient Egypt.  Presumably, during the many centuries when falling from horses was far from uncommon, such injuries were frequent but because neither surgical correction nor sophisticated rehabilitation regimes had evolved, victims had to suffer or perhaps retire from more rigorous pursuits.  The Irish surgeon Robert Adams (1791-1875) in 1837 noted a clinical case of an ACL tear but in an age when treatments rightly were conservative because the risk death from any surgical intervention was high, Dr Adams’ report was purely observational.  The literature was augmented in 1850 by the Scottish GP (family doctor) James Stark (1811-1890) who published two cases of cruciate tears, describing the different manifestations of knee instability in patients with damaged ACLs but the first record of ACL repair was an operation performed in 1895 by the English surgeon Sir Arthur Mayo-Robson (1853-1933).  The early approach was the use of primary open sutures but while this produced good initial results, decoration was rapid.  No substantive improvements in method were reported so the suturing approach was abandoned and the profession turned to reconstruction.

Lindsay Lohan's knees.

The Russian-born surgeon Ivan Grekov (1867-1934) is credited with having in 1914 been the first to adopt the use of autologous tissue (of cells or tissues obtained from the same individual) for ACL rupture reconstruction in 1914, the technique also documented by the English professor of orthopaedic surgery, Ernest Hey Groves (1872-1944) who performed a number of procedures between 1917-1920.  The Hey Groves approach is strikingly modern and essentially the technique used today but the efficacy clearly wasn’t understood because in the following decades what the historians describe as “…a period of startling ingenuity which created an amazing variety of different surgical procedures often based more on surgical fashion and the absence of a satisfactory alternative than any indication that continued refinements were leading to improved results.  It is hence not surprising that real inventors were forgotten, good ideas discarded and untried surgical methods adopted with uncritical enthusiasm only to be set aside without further explanation.”  That to some extent may explain why ACL reconstructions became rare and it wasn’t until the 1970s when, as the implications of broadcasting allowed professional sport to become a multi-billion dollar industry that with sports medicine becoming a mainstream medical discipline that the operation became common; it was certainly a common injury.  Still, innovation continued and just as there was experimentation with xenografts (tissue graft taken from a species different from that of the recipient.) & allografts (a tissue graft between genetically different individuals of the same species) before the autologous prevailed.  Even synthetic graft materials enjoyed some popularity in the 1980 and 1990s, apparently because in laboratory testing artificial ligaments appeared to be more durable and better able to withstand stresses and strains; real-world experience proved otherwise.

Torn ACL: Exactly what it says.

The increasing participation of female participation in elite-level (often professional) sports such as the various football codes and basketball has in recent years seen a striking rise in ACL injuries.  While to reported volume of incidents is still less than those suffered in gymnastics, long the most common source, it’s in these team sports where the rate of increase has been greatest.  Although the male & female knee look much the same, the physiological differences exist and, given there are differences between almost every human cell which is in some way specifically male or female, that shouldn’t be surprising.  Anatomists note certain structural divergences such as those in the alignment of the leg & pelvis and the muscular protection of the knee joint, added to which the hormone estrogen is known to influence all ligaments but probably of greater consequence are the variations in neuromuscular behavior which human movement studies have documented.  Essentially, these focus on the different positions of the knee and the upper body (compared to the typical male) and a striking predilection when landing to apportion most weight to one rather than both feet.  Theories have been offered to account for this but the most obvious consequence is that the forces generated by landing are less absorbed by the foot and lower leg muscles (analogous with the “crumple-zones” in modern automobiles), meaning a higher proportion of the stress impacts upon the ACL of the “landing knee”.  Added to this, because the typical female tends to land with the upper body tilted to the side of the “landing knee”, this imposes a greater rotational force on the ACL at the same time a vertical impact is being absorbed.  This crucial aspect of behavior is known as the “ankle-dominant strategy”

Some novel research however emerged in 2024 and it may be a candidate for one of the ten Ig Nobel Prizes, awarded annual by the Annals of Improbable Research (AIR) to acknowledge “unusual or trivial achievements in scientific research”.  What the study hypothesized was there might be a link between the sports bras and ACL injuries.  Impressionistically, the connection is not immediately obvious and what the researchers found was not, as might be imagined, simply a product of weight distribution and the effective “multiplier effect” of mass in movement, the further it is from the pivot point, illustrated by the recommendations provided for placing weight in trailers when being towed.  The physics of both are presumably vaguely similar but the interplay of factors relating to women's ACL injuries seems to be more complex. 

Lindsay Lohan in "low-impact" sports bra.

It transpires the multiplier effect of the upper-body mass wasn’t the issue.  What the international team of experts in biomechanics and sports medicine did was study 35 female recreational athletes, finding that the more supportive were the sports bras (the so-called “high-impact” designs), the greater the decrease in the common risk factors associated with ACL injuries, the “knee flexion angles” reducing, meaning the knee didn't have to bend as much on landing.  Additionally, there was a reduction in “dynamic knee valgus”, the knee moving inwards from the foot, something of mechanical significance because females tend to have more inward collapsing knees (increased dynamic knee valgus) during landing activities.  Dynamically, what the study revealed was that when there was no or only minimal breast support, the greater was the tendency to adopt the “ankle-dominant strategy” which had the effect of transferring the stress to the knee and thus the ACL.

By contrast, when wearing a high-impact sports bra, females Used a more “hip-dominant” strategy which puts less strain on the ACL.  The mechanics of the “hip-dominant” approach is that the trunk moves less, making pelvic control easier the “…movement patterns at the trunk, pelvis and lower extremities… all connected.”  The study was published in the Journal of Applied Biometrics and the study cohort of 35 included women with bra cup sizes between B & D, the findings suggesting the larger the cup size, the higher the risk of traumatic knee injury although, perhaps counter-intuitively, the researchers weren’t prepared to say that “…definitively say breast size drives injury risk…” because (1) it was a small number of participants in the study and (2) there are “…so many differences in movement patterns from person to person.”  In the spirit of good research, one reviewer noted the study “…scratches the surface…" of an area that needs …further investigation. 

Human movement studies have a long history but the bulk of the research has been on men and the presence of breasts is the most obvious difference in the bio-mechanics of movement and something which might yet have implications not yet understood.  The physics of it is breasts move up and down and side-to-side during exercise and in a sixty minute session of running, they can bounce in a figure-eight pattern some 10,000 times.  Traditionally, for the sports bra manufacturers the focus in advertizing has been on comfort but there are also performance effects which at the elite level can be vital because the difference between success and failure can be measured in thousands of a second and fractions of an inch.  The appropriate bra can actually reduce oxygen consumption when running which translates into running economy (the distance traveled per volume of oxygen consumed) and the oxygen can be better used by the brain and muscles; also, if the breast movement minimized, the strides become longer, another aspect of economy.  Those matters were known but the apparent explanation of the wrong choice of sports bra being a factor in the higher incidence of ACL injuries in women is something new.

Wednesday, April 24, 2024

Chiaroscuro

Chiaroscuro (pronounced kee-ahr-uh-skyoo-roh)

(1) The distribution of light and shade in a picture.

(2) In painting, the use of deep variations in and subtle gradations of light and shade in color, especially to enhance the delineation of character and for general dramatic effect.

(3) In monochrome painting, using light and dark only, as in the grisaille technique.

(4) The artistic distribution of light and dark masses in images.

(5) A woodcut print in which the colors are produced by the use of different blocks with different colors.

(6) A sketch in light and shade.

1680-1690: From the Italian chiaroscuro (disposition of light and dark in a picture (literally "bright-dark"), the construct being chiaro (clear, bright) from the Latin clārus ((clear, bright, renowned, famous, illustrious)) + oscuro (dark) from the Latin obscūrus (dark, dusky, shadowy, indistinct, unintelligible, obscure, intricate, involved, complicated, unknown, unrecognized; (of character) reserved, secret, close). Related forms are the nouns chiaroscurist and chiaroscurism.  The seventeenth century Italian forms were chiaroclear and oscuroobscure.  Chiaroscuro is a noun & adjective, chiaroscurist is a noun and chiaroscuroed is an adjective; the noun plural is chiaroscuros or chiaroscuri.

De koppelaarster (The Matchmaker) (1625) by Gerrit van Honthorst (1592–1656).

In oil painting, the technique of Chiaroscuro emerged during the Renaissance.  Essentially, it aimed to create the optical illusion of three-dimensional forms by emphasizing the tonal contrasts between light and dark. It’s a clever artistic trick achieved by having light fall against the edges of solid, darker forms and the most celebrated exponents were Leonardo da Vinci, Caravaggio, and Rembrandt.

Three photographs of Lindsay Lohan following the chiaroscuro technique.

Now less fashionable in painting, probably because modern artists are understandably not anxious to seek comparison with old masters, it’s perhaps the dominant technique in photography and when working in monochrome, it can produce fine results.  Called the Rembrandt technique or Rembrandt lighting, it’s also been occasionally adopted by film directors although it’s difficult to execute and ultimately renders a product not at all realistic which sometimes can be the director’s intent; sometimes perhaps not.  In the case of some Soviet cinema, the technique was adopted and is considered a distinctive element in many works in the genre of "socialist realism" although that is something quite distinct from "appearing realistic".  Soviet art was riddled with such paradoxes.

Paris-based Bulgarian photographer Elina Kechichevna (b 1979) created Dior’s 2021 Spring Summer collection (SS21) campaign, emulating Caravaggio’s (1571-1610) masterful handling of the technique of chiaroscuro.  Thematically, Kechichevna explored a number of strands including feminist thought, romanticism and the interplay of chiaroscuro’s layering of light with tricks of geometry in placement.

Sunday, April 21, 2024

Deliquesce

Deliquesce (pronounced del-i-kwes)

(1) In physical chemistry, to become liquid by absorbing moisture from the atmosphere and dissolving in it (best illustrated by the behavior of certain salts).

(2) To melt away; to disappear (used literally & figuratively).

(3) In botany, branching so the stem is lost in branches (as is typical in deciduous trees).

(4) In mycology (of the fruiting body of a fungus), becoming liquid as a phase of its life cycle.

1756: From the Latin dēliquēscere (to become liquid), the construct being dē- + liquēscere (to liquefy; liquescent).  In scientific literature, the adjective deliquescent (liquefying in air) is the most commonly used form.  It was from the Latin deliquescentem (nominative deliquescens), present participle of deliquescere (to melt away), the construct being de- + liquesco (I melt) and familiar in French also as déliquescent.  The de- prefix was from the Latin -, from the preposition (of, from (the Old English æf- was a similar prefix).  It imparted the sense of (1) reversal, undoing, removing, (2) intensification and (3) from, off.  In French the - prefix was used to make antonyms (as un- & dis- function in English) and was partially inherited from the Old and Middle French des-, from the Latin dis- (part), the ultimate source being the primitive Indo-European dwís and partially borrowed from Latin dē-.  The figurative sense of “apt to dissolve or melt away” was in use by 1837 while the verb deliquesce appears not to have been used thus until the late 1850s.  In scientific literature, the adjective deliquescent (liquefying in air) is the most commonly used form.  It was from the Latin deliquescentem (nominative deliquescens), present participle of deliquescere (to melt away), the construct being de- + liquesco (I melt) and familiar in French also as déliquescent.  The figurative sense of “apt to dissolve or melt away” was in use by 1837 while the verb deliquesce appears not to have been used thus until the late 1850s.    Deliquesce, deliquesced & deliquescing are verbs, deliquescent is an adjective, deliquescence is a noun and deliquescently is an adverb; the noun plural is deliquescences.

Deliquesce 1, oil on canvas by Tammy Flynn Seybold (b 1966).

This was the first in the Deliquesce Series, a group of works exploring the themes of transformation and conservation of energy in human forms, the artist noting being intrigued by the deceptively ephemeral nature of materials: “We think of objects - human forms included - as decaying, degrading or ‘disappearing’ but, as we know from the laws of thermodynamics, all energy is conserved - like matter, it is merely transformed from one form to another.  This work, painted with pastel-hued oils was made directly from a live model, the drips allowed organically to happen from her languid form and by using light, bright hues, I hoped to bring a spirit of optimism to this transformative process.

A footnote to the addition of deliquesce to scientific English is a tale of the chance intersection of politics and chemistry.  Dr Charles Lucas (1713–1771) was an Anglo-Irish physician who held the seat of Dublin City in the Irish Parliament and was what now would be called “a radical”, dubbed at the time “Irish Wilkes” (a nod to the English radical politician John Wilkes (1725–1797).  His early career was as an apothecary and he was shocked discover the fraud and corruption which permeated the industry and in an attempt to reform the abuses published A Short Scheme for Preventing Frauds and Abuses in Pharmacy (1735) which much upset his fellow apothecaries who were the beneficiaries of the crooked ways but the parliament did respond and created legislation regulating standards in medicines and providing for the inspection of the products; it was the first of its kind in the English-speaking world and the ancestor of the elaborate framework of rules today administered by entities such as the US FDA (Food & Drug Administration.  Encouraged, he later published Pharmacomastix, or the Office, Use, and Abuse of Apothecaries Explained (1741), the contents of which were used by the parliament to make certain legislative amendments.

However, as well as a radical, Lucas was a idealist and while the establishment was content to support him in matter of pills and potions, when he intruded into areas which disturbed the political equilibrium, they were less tolerant and, facing imprisonment, Lucas fled to the continent where he’d decided to study medicine, graduating as a doctor in 1752.  One of his first projects as a physician was a study of the composition of certain mineral waters, substances then held to possess some remarkable curative properties (something actually not without some basis).  To undertake his research he visited a number of sites including Spa, Aachen in what is now North Rhine-Westphalia and Bath in the English county of Somerset.  The material he assembled and published as An Essay on Waters. In three Parts: (i) of Simple Waters, (ii) of Cold Medicated Waters, (iii) of Natural Baths (1756) and it was in this work that the verb “deliquesce” first appeared.  Ever the “disturber” Dr Lucas’s tract upset the medical establishment in much the same way two decades earlier he’d stirred the enmity of the apothecaries, the cluster of physicians clustered around the Bath spa angered the interloper hadn’t consulted with them on a topic over which they asserted proprietorship.

Lindsay Lohan and her lawyer in court, Los Angeles, December 2011.

In chemistry, the companion word of deliquescence is hygroscopy, both describing phenomena related to the ability of substances to absorb moisture from the surrounding environment, but they differ in extent and behavior.  Hygroscopy refers to the ability of a substance to absorb moisture from the air when exposed; hygroscopic substances can attract and hold water molecules onto their surface but tend not to dissolve.  Many salts behave thus and a well-known example of practical application is the silica gel, which, in small porous packages, is often used as a desiccant to absorb moisture in packaging. Deliquescence can be thought of an extreme form of hygroscopy (hydroscopy taken to its natural conclusion) in that a substance which deliquesces not only absorbs moisture from the air but also absorbs it to the point where it dissolves completely in the absorbed water, forming a solution.  In the natural environment, this happens most frequently when the relative humidity of the surrounding air is high and the classic deliquescent substances are salts like calcium chloride, magnesium chloride, zinc chloride, ferric chloride, carnallite, potassium carbonate, potassium phosphate, ferric ammonium citrate, ammonium nitrate, potassium hydroxide, & sodium hydroxide.  Presumably because deliquescence is the extreme form of hydroscopy it was the former which came to be used figuratively (dissolving into “nothing”) while the latter did not.

At the chemical level, hygroscopy (a class in which scientists include deliquescence as a sub-set) describes the phenomenon of attracting and holding water molecules via either absorption or adsorption (the adhesion of a liquid or gas on the surface of a solid material, forming a thin film on the surface.) from the surrounding environment.  Hygroscopy is integral to the biology of many plant and animal species' attainment of hydration, nutrition, reproduction and/or seed dispersal.  Linguistically, hygroscopy is quirky in that the construct is hygro- (moisture; humidity), from the Ancient Greek ὑγρός (hugrós) (wet, moist) + -scopy (observation, viewing), from the Ancient Greek σκοπέω (skopéō) (to see (and the source of the Modern English “scope”) yet unlike other forms suffixed by “-scopy”, it no longer conveys the sense of “viewing or imaging”.  Originally that was the case, a hygroscope in the late eighteenth century understood as a device used to measure humidity but in a wholly organic way this use faded (“dissolving deliquescently to nothing” as it were) while hygroscopic (tending to retain moisture) & hygroscopy (the ability to do so) endured.  The modern instrument used to measure humidity is hygrometer, the construct being hygro- + -meter (the suffix from the Ancient Greek μέτρον (métron) (measure) used to form the names of measuring devices.

Friday, April 19, 2024

Rabbit

Rabbit (pronounced rab-it)

(1) Any of several soft-furred, large-eared, rodentlike burrowing mammals of the family Leporidae, allied with the hares and pikas in the order Lagomorpha, having a divided upper lip and long hind legs, usually smaller than the hares and mainly distinguished from them by bearing blind and furless young in nests rather than fully developed young in the open.

(2) Any of various small hares.

(3) The fur of a rabbit or hare, often processed to imitate another fur.

(4) A runner in a distance race whose goal is chiefly to set a fast pace, either to exhaust a particular rival so that a teammate can win or to help another entrant break a record; pacesetter.

(5) In sport, a person poor at a sport; in cricket specifically, an unskilled batter (also as “batting bunny”, usually clipped to bunny).

(5) As Welsh rabbit, an alternative form of Welsh rarebit & Welsh ribbit (A snack made of cheese melted with a little ale and served on toast).  Welsh rabbit was the original form but was erroneously marked as a corruption in a dictionary published in 1785 although it’s not clear if the editor made the assumption or drew the conclusion from oral evidence.

(6) In nuclear engineering, a pneumatically-controlled tool used to insert small samples of material inside the core of a nuclear reactor.

(7) In computing theory, a large element at the beginning of a list of items to be bubble sorted, and thus tending to be quickly swapped into the correct position.

(8) In northern English regional slang, as “rabbit catcher”, a midwife or one who by force of circumstance assists in the delivery of a baby.

(9) As “rabbit ears”, the indoor dipole television antenna which typically sat atop the early analogue sets which received a terrestrial signal.

(10) Incessantly or nonsensically to talk.

(11) To hunt rabbits.

(12) In US slang, to flee.

1375-1425: From the late Middle English rabet & rabette, from the Anglo-Latin rabettus, from the Middle French rabouillet (baby rabbit), from the dialectal Old North French rabotte, probably a diminutive of Middle Dutch or West Flemish robbe (rabbit, seal), of uncertain origin but which may be an imitative verb (perhaps robben or rubben (to rub)) and used to allude to a characteristic of the animal.  The related forms include the French rabot (plane), the Middle Dutch robbe (rabbit; seal (from which Modern Dutch gained rob (seal (also “rabbit”), the Middle Low German robbe & rubbe (rabbit), the later Low German Rubbe (seal), the West Frisian robbe (seal), the Saterland Frisian Rubbe (seal) and the North Frisian rob (“seal”) eventually borrowed as the German Robbe (seal).  Early dictionary editors thus described the word as “a Germanic noun with a French suffix”.  Rabbit is a noun & verb, rabbitiness is a noun, rabbited is a verb, rabbitlike & rabbity are adjectives and rabbiting is a noun & verb; the noun plural is rabbits and (especially in the collective) rab·bit.

Lindsay Lohan with rabbit.

Until the late nineteenth century, the meaning was exclusively what would now be understood as “a young rabbit” but it came to be used of the whole species, replacing the original coney, owing to the latter's resemblance to and use as a euphemism for cunny (“vulva” and linked obviously with “cunt” although despite that the preferred slang with some zoological allusion came to include “beaver”, “camel toe” and (especially) “pussy, rather than “bunny”).  The noun coney dates from the early thirteenth century and was abstracted from the Anglo-French conis and the Old French coniz, (plurals of conil (long-eared rabbit; (Lepus cunicula)) from the Latin cuniculus, the source also of the Spanish conejo, the Portuguese coelho and the Italian coniglio), the small, Spanish variant of the Italian hare (Latin lepus).  The word may ultimately be from the Iberian Celtic although classical writers said it was Hispanic.  In Middle English the two forms were cony & conny (the derivations including coning, cunin & conyng) while the Old French had conil alongside conin.  The evolution seems to be that the plural form conis (from conil, with the -l- elided) was taken into English and regularly single-ized as cony.  The Old French form was borrowed in the Dutch konijn and the German Kaninchen (a diminutive), and is preserved in the surname Cunningham (from a place-name in Ayrshire).  Rabbits not being native to northern Europe, there was no Germanic word for them.  In the fourteenth century “rabbit” came to describe the young of the species and over the centuries came to supplant coney, a process complete by the early nineteenth.  It was another of those exercises in sanitization because in English & Welsh slang, coney had been adopted as a punning synonym for cunny (cunt).  That was complicated by it appearing in the Book of Proverbs in the King James Version of the Bible (KJV, 1611) so the work-around was to change the pronunciation of the original short vowel (rhyming with honey, money) to rhyme with bony, stony.  In the Old Testament, the word translates the Hebrew shaphan (rock-badger).

When Volkswagen in 1974 introduced the Golf in the North American market, it was named the Rabbit, apparently because it would thought the name would suggest qualities such as “agility, speed & playfulness” which were positive attributes in what was then (by US standards) a very small car, much smaller than the more recent versions.  Because of the international success of the Golf, when the revised model was released in 1983, the North American cars switched to that name and it’s been marketed that way since except between 2003-2008 when the Rabbit badge was revived.  The revival was in retrospect a curious choice given the obvious advantages offered by using the one name globally but at the time VW America had a rationalization: “We think we have some opportunities to do something creative with the Rabbit nameplate and recognizes the Golf nameplate has never really caught on with North American consumers as it was overshadowed by the Jetta sedan and wagon.  Volkswagen customers want a relationship with their cars and names like The Thing, Beetle, Fox and Rabbit support this."  Whatever the opportunities may have been, the linguistic experiment wasn’t continued and since 2009, it’s been Golfs all the way.

US market VW Golfs: 1974 Rabbit L (Generation 1)  (left) and 2007 Rabbit TSI (Generation 5).

There was some linguistic irony in VW’s choice because as the US satirist & critic HL Mencken (1880–1956) pointed out in The American Language; An Inquiry into the Development of English in the United States (1919): “Zoologically speaking, there are no native rabbits in the United States; they are all hares. But the early colonists, for some unknown reason, dropped the word hare out of their vocabulary, and it is rarely heard in American speech to this day. When it appears it is almost always applied to the so-called Belgian hare, which, curiously enough, is not a hare at all, but a true rabbit.

The White Rabbit was a character in Lewis Carroll’s (1832–1898) Alice’s Adventures in Wonderland (1865) and one which appears often, always in a waistcoat with pocket watch and in a hurry, fearful always of the impending fury the duchess will visit upon him should he be a moment late.  It’s the white rabbit which Alice follows down the rabbit hole, leading to the bizarre adventures recounted.  One of popular culture’s best-known rabbits gave rise to the phrase “bunny boiler”, a reference to the scene in the film Fatal Attraction (1987) in which a scorned woman revenged herself upon her adulterous ex-lover by tossing his daughter’s pet rabbit into a pot of boiling water; he arrives home to discover a boiled bunny.  The Warner Brother cartoon character Bugs Bunny first appeared on the screen in 1938 and is often described by his shotgun wielding antagonist, the lisping Elmer Fudd, as "that wascally wabbit".

In idiomatic use there’s “pull a rabbit out of the hat” (to find or obtain a sudden solution to a problem), “rabbit-hearted” (someone timid or inclined to be flighty), “rabbit food” (a disapproving view of vegetables held by some meat-eaters), “the rabbit test” (an early pregnancy test involving the injection of the tested woman's urine into a female rabbit, then examining the rabbit's ovaries a few days later for changes in response to a hormone (“the rabbit died” the phrase indicating a positive test or an admission of one’s pregnancy)), “breed like rabbits” (slang for an individual, family, or sub-group of a population with a high birth-rate), “down the rabbit hole” (a time-consuming tangent or detour, often one from which it’s psychologically difficult to extricate oneself), lucky rabbit’s foot, (the carrying of a luckless bunny’s preserved rabbit’s foot as a lucky charm), “like a rabbit warren” (a confusingly labyrinthine environment (used literally & figuratively)), “rabbit in the headlights (an allusion to the way rabbits (like some other wildlife) sometimes “freeze” when caught in the light of an oncoming vehicle’s headlamps) and the inevitable “rabbit fucker” (a general term of disparagement (although it could be applied literally in the right circumstances)).

The “earless” rabbit with “eared” companions.

In May 2011, some weeks after the meltdown at Fukushima Dai-ichi nuclear plant which suffered severe damage in the aftermath of the earthquake and tsunami, a video of an “earless rabbit” began to circulate, purportedly captured in an area just beyond the crippled plant’s exclusion area.  The immediate speculation was of course the creature’s unusual state was a result of a radiation-induced genetic mutation.  Geneticists however had a less troubling explanation.  Although there’s no doubt the radiation emitting from Fukushima Dai-ichi (some 225 kilometres (140 miles) north-east of Tokyo) represents a major risk to health and the long-term environmental effects remain unclear, the scientists say not only is it unlikely to be linked with the earless rabbit, such creatures are far from unusual.  According to a  statement issued from Colorado State University's Department of Environmental and Radiological Health Sciences: …radiation can cause mutations that can be occasionally expressed as obvious birth defects, such as shown in the video.  However, to say this is the result of contamination from the Fukushima accident is a stretch, because natural radiation, as well as many other chemical substances in the environment and other factors, can also be mutagenic.  In most cases, the cause of congenital birth defects in humans and other animals cannot be determined and as far as science has shown, there have never been mutations produced by ionizing radiations that do not occur spontaneously as well.

Rabbits used in nuclear reactors: Polyethylene 1-inch (25 mm) rabbit (left), Polyethylene 2-inch (50 mm) rabbit (centre) and Titanium 2-inch (50 mm) rabbit.

The rabbit does though have a place in nuclear engineering.  In the industry, the term “rabbit” is used to describe a range of pneumatically controlled tools which are used remotely to insert or retrieve items from a nuclear reactor or other radioactive environments.  The name is thought to come from the devices being tubular (on the model of the rabbit borrow) which allows samples rapidly to be injected into the periphery of a reactor core, the injectables moving “with the speed of startled rabbits” although there may also be the implication of rabbits as expendable creatures, the tool essential for maintenance, inspection, and repair tasks in nuclear facilities, where direct human intervention is either dangerous or impossible because of high radiation levels.

Winston Churchill inspecting the progress of project White Rabbit No, 6, Clumber Park, Nottinghamshire, England, November 1941.

The World War II (1939-1945) era White Rabbit No. 6 was an engineering project by the British Admiralty although as a security measure the official code-name was changed to Cultivator No. 6 to make it sound less mysterious and more like a piece of agricultural equipment.  It was a military trench-digging machine and an example of the adage that “generals are always preparing to fight the last war” and although designed exclusively for army use on (and at least partially under) land, it came under the auspices of the Royal Navy because it was a brainchild (one of many) of Winston Churchill (1875-1965; UK prime-minister 1940-1945 & 1951-1955) who, between the outbreak of war in 1939 and his assumption of the premiership some months later, served as First Lord of the Admiralty (the service’s civilian head).  Trenches and artillery had been the two dominant features of World War I (1914-1918) and Churchill had spent some months (1915-1916) in one of the former while under fire from the latter while commanding a battalion; before the implications of mechanization and the German’s Blitzkrieg (lightning war) tactics were apparent, he assumed the new war in France would unfold something like the old, thus the interest in something which would “revolutionize trench warfare”.  Trench warfare however wasn’t repeated so White Rabbit No.6 was soon realized to be already obsolete and the project was abandoned and although the most fully developed of the prototypes did perform according to the design parameters, whether it would have been effective remains doubtful; remarkably, work on these things wasn’t wholly abandoned until 1942.  The “White Rabbit” project codes came from Churchill’s sense of humor, his ideas coming, as he said: “like rabbits I pull from my hat” and he supported many, some of which were of great military value while others, like the “floating runways” (artificial icebergs made with a mixture of shards of timber & frozen water), were quixotic.

White Rabbit © Copperpenny Music, Mole Music Co

Surrealistic Pillow album cover, 1967.

White Rabbit was a song by Grace Slick (b 1939) and released on the album Surrealistic Pillow by Jefferson Airplane.  The lyrics were inspired by Lewis Carroll's Alice's Adventures in Wonderland and the sequel Through the Looking-Glass (1871).  It was the psychedelic era and drug references were common in popular music and in the case of White Rabbit it may have been appropriate if the speculation the books been written while the author was under the influence of Laudanum (a then widely-available opiate-infused drug) is true (there's no evidence beyond the circumstantial).  Given the imagery in the text, it’s not difficult to believe he may have been on something and among authors and poets it was a popular way to stimulate the imagination, inspiring at least some of one of the most beloved fragments of English verse, Samuel Taylor Coleridge’s (1772-1834) Kubla Khan (1797) which ends abruptly at 54 lines.  According to Coleridge, he was unable to recall the rest of the 300-odd which had come to him in an opium-laced dream (the original publication was sub-titled “A Vision in a Dream”) because he was interrupted by “a person on business from Porlock” (a nearby Somerset village).  Grace Slick would have sympathized with an artist being intruded on by commerce.

White Rabbit lyrics:

One pill makes you larger
And one pill makes you small
And the ones that mother gives you
Don't do anything at all
Go ask Alice
When she's ten feet tall
 
And if you go chasing rabbits
And you know you're going to fall
Tell 'em a hookah-smoking caterpillar
Has given you the call
Call Alice
When she was just small
 
When the men on the chessboard
Get up and tell you where to go
And you've just had some kind of mushroom
And your mind is moving low
Go ask Alice
I think she'll know
 
When logic and proportion
Have fallen sloppy dead
And the White Knight is talking backwards
And the Red Queen's off with her head
Remember what the dormouse said
Feed your head