Theodolite

Theodolite (pronounced thee-od-l-ahyt)

(1) In surveying, a precision instrument having a telescopic sight for establishing horizontal and sometimes vertical angles; usually called a transit in US & Canada.

(2) As phototheodolite, an instrument consisting of a theodolite mounted on a camera which can take at each of several stations of known position and elevation (as determined by transit survey) a series of photographs used in terrestrial photogrammetry.

1571: From the New Latin theodolitus the origin of which is contested.  It was probably coined either from the Arabic al-idhâda (a sort of rule) or the Ancient Greek theā (a viewing) plus a second element of unknown origin which may have been invented.  The North American use of” transit” rather than theodolite is historic.  During the nineteenth century, Americans preferred the surveyor’s compass and, later, the surveyor’s transit, which were cheaper and more robust and, despite technical progress, the name stuck.

Many have attempted to trace the etymology of theodolite but no satisfactory explanation has been found.  The first use was in a book by English mathematician and surveyor Leonard Digges called Geometrical practical treatize, named Pantometria, diuided into three bookes, longimetria, planimetria, and stereometria (1571, second edition 1591).  The author didn’t mention any derivation and used the spellings “theodelitus” and “theodolitus” alternately.  Writing a few years later, another mathematician named the same instrument a “horizontall or flatte sphere”, although inconsistencies in spelling was at the time not unusual, the same author when speaking of an alidade (a sighting device or pointer for determining directions or measuring angles used in both surveying and astronomy), spelled it as “alideday” and “athelida”.

One explanation is that both theodelitus and athelidae were corruptions of the Arabic al-idhâda (a sort of rule), and both mathematicians would have been acquainted with the work of earlier Arabic mathematicians.  That’s not unconvincing for athelidae but theodelitus is more likely to have been derived from (or at least influenced by) the Ancient Greek; the second element has mystified all.  The first part of the New Latin theo-delitus might stem from the Ancient Greek θεᾶσθαι (to behold or look attentively upon) or θεῖν (to run) but the second part is puzzling though sometimes attributed to an unscholarly variation of one of the following Greek words: δῆλος (evident; clear), δολιχός (long) or δοῦλος (slave) or even an unattested Neo-Latin compound combining ὁδός (way) and λιτός (plain).  It has been also suggested that -delitus is a variation of the Latin supine deletus, in the sense of "crossed out".

From mechanical to digital

Copper & brass theodolite, Hall Brothers of London, circa 1894.

A theodolite is an optical device used to measure angles between visible points in the horizontal and vertical planes.  Historically they were used in land surveying but they’re used also in all aspects of civil engineering, meteorology and rocket telemetry.  The earliest theodolites were small mounted telescope which rotated horizontally and vertically; modern versions are sophisticated digital instruments which can track weather balloons, airplanes, and other moving objects, at distances up to 12 miles (20 km / 65,600 feet).  Nearly always used mounted on a tripod and originally mechanical-optical instruments, almost all theodolites in active use are now digital.  Theodolites, whether mechanical or digital, are instruments used to determine the relative position of points on the earth's surface by measuring the horizontal and vertical angles. Digital theodolites are more convenient and accurate as they provide the operator with readouts.  With the traditional device, it was necessary manually to read the numbers directly from a graduated circle.

The modern digital theodolite.

A digital theodolite consists of a telescope mounted on a base, a sight at the top used to align the target, vision of which is clarified by adjusting a focusing knob, an objective lens on the opposite side used to sight and magnify the target as required.  Despite the differences in construction, the parts of a digital theodolite are mostly similar to the non-digital theodolite, except for the addition of a liquid crystal display (LCD) and the operating keys for changing the settings.  In the same manner as the non-digital theodolite, leveling is performed using optical plummets or plumb bobs and the spirit or bubble level.  In use, it’s made first to stand vertically above the survey point with the help of a plumb bob or optical plummet and is then made in level to the horizon with the help of internal spirit levels.  Once the leveling process is complete, the telescope is used to focus on the target and the respective horizontal and vertical angles are displayed on the screen.

Cash

Cash (pronounced kash)

(1) Money in the form of coins or banknotes, historically that issued by a government or a bank or other financial institution operating with the approval of a government.

(2) Money or an equivalent paid at the time of making a purchase.

(3) Immediate payment, in full or part, for goods or services, even if not paid in physical cash (ie as distinct from the various forms of time (delayed) payment).

(4) To give or obtain cash for a check, money order, bill of exchange etc.

(5) In some games of cards, (1) to win (a trick) by leading an assured winner or (2) to lead (an assured winner) in order to win a trick.

(6) Any of several low-denomination coins of China, Vietnam, India, and the Dutch East Indies (modern-day Indonesia), especially the Chinese copper coin.

1590–1600: From the Portuguese caixa, from the Tamil காசு (kācu) (a copper coin), from the Sanskrit karṣa (a weight (of precious metal such as silver or gold)).  There was also the sixteenth century Old Italian cassa (money box) from the Latin capsa (case).  Variation of cash appear in many languages including the Japanese: キャッシュ (kyasshu), the Serbo-Croatian (kȅš & ке̏ш) the Romanian cash and the Swedish cash.

Cashable is an adjective, cashability & cashableness are nouns.  The noun plural is cash (except for the proper noun; the surname’s plural being Cashes).  The homophone of cash is cache, often mispronounced as kaache although cache’s adoption as a technical term in computing has led some to suggest kaache should be the use in the industry with kash for all other purposes and there’s much support for the view which does make sense, even if, given the specificity of the context, confusion is unlikely.  The verb cashier (and the related cashiering & cashiered) is (1) the simple past tense and past participle of cashier and (2) the apparently curious term for the dismissal of a military officer, cashiered in this context from the Dutch casseren & kasseren, from the Old French casser (to break (up)).  During a ceremonial cashiering, the break of his link with the military was sometimes symbolized dramatically by literally breaking the officer’s sword (which had in advance been partly sawn through).   

The surname appears to be an American variant of Case, the records indicating it was first adopted by in the US by German immigrants named Kirch and Kirsch, an example of the Anglicization of names once a common of those migrating to the English-speaking world.  In rare cases it has been used a male given name, often as a second name reflecting the mother’s maiden name.  A cashier (person in charge of money), dates from the 1590s, from the French caissier (treasurer), from caisse (money box), the immediate source of the English word perhaps the Middle Dutch kassier.

Lindsay Lohan themed cash.  Unfortunately, these Lohanic notes are not issued by the US Federal Reserve and thus neither legal tender nor readily convertible (at least at face-value) to other currencies.  However, Lindsay Lohan is dabbling in the embroynic world of the NFT (non fungible token) which may evolve to have some influence on the development of how cash is stored and exchanged (if not valued).   

In idiomatic use, cashing-in one’s chips means literally to take one’s winnings and leave the casino but is also used to mean “to die” whereas cashing-up is a technical term from business referring to the end-of-day audit & balancing procedures.  A moneybags (ie bags full of cash) is someone (usually conspicuously) rich.  A cash-cow is a product or service which dependably provides the owner or operator a lucrative profit.  A cash-crop (agricultural product grown to sell for profit) is attested from 1831 and was distinct from one with some other primary purpose (such as for self-sustenance or stock-feed).  A cash-back is a trick in advertising and a form of discount.  The phrase cold, hard cash is another way of emphasizing the primacy of money.  A cash-book (which historically were physical ledgers but most are now electronic) was a transactional register.  To cash was “to convert (a cheque (the US check) or other bill of exchange) to cash", known since 1811 as a variation of the noun and the now-extinct encash from 1865 was also used as a piece of specialized jargon meaning exactly the same thing; it was replaced as required by cashed & cashing.  The cash-box (also called money-box), dating from the 1590s, was (and remains) a box for the safe-keeping physical cash and was from the sixteenth century French caisse (money box), from the Provençal caissa or the Italian cassa, from the Anglo-Norman & Old French casse (money box), from the Latin capsa (box, case) ultimately from capiō (I take, I seize, I receive), from the primitive Indo-European kehp- (to grasp) (which also led to the Spanish caja (box); the original sense was literally the wooden or metal box by the eighteenth century, the secondary sense of the money began to run is parallel before, for most purposes, becoming the sole meaning.  To cash in is to profit from something, applying it one's advantage.  A cash-register, dating from 1875, was historically a mechanical device used to record transactions and issue receipts, such machines now mostly electronic and increasingly linked to centralized (even international) databases; in Jewish humorous use, a cash-register was “a Jewish piano”.  Cash-flow (which surprisingly seems to date only from 1954) refers to a specific characteristic of business and means the periodic accumulation of disposable revenue to permit the operations always to meet its obligations and continue trading; it’s not directly related to long-term profitability in that something with a good cash-flow can continue indefinitely while only breaking even while a profitable concern with a poorly managed cash-flow can flounder.  In commerce, use is common such as cash-and-carry, cash account, cash-only, discount for cash etc although transaction handling costs have affected the last: where once it was common for businesses to offer a discount to customers paying with physical cash (sometimes because it offered the possibility of a hidden (ie un-taxed) transaction, it’s now not uncommon for a fee to be imposed, reflecting the difference in processing costs for weightless (electronic) payments compared with the physical (notes & coins).  In criminal slang, "cash" is said to be a euphemism for “to do away with, to kill” the word "disband" also carrying this meaning and both “cash” and “disband” are reputed to be used on the dark web as code by those offering contract killing although such things are hard to verify and may be an internet myth. Cash on delivery (COD) dates from 1859 and was an invention of American commerce designed to encourage sales from businesses previously unknown to the individual consumer.  Cashless (often as cashless-society or cashless transaction) refers usually to the elimination of physical money (ie notes and coins), something sought by many bureaucrats for various reasons although of concern to civil libertarians.

According to anthropologists, the word cash (money and all that) is really derived from the word kash, a beer brewed in Ancient Egypt which was used to pay workers (including the builders of the Great Pyramids).  Stone cutters, slaves, architects, and even public officials were often paid (at least in part) with beer, two containers of kash often set as the minimum wage for an Egyptian laborer’s day of work.  At the time, there was quite a brewing industry, the Egyptians known to be distributing at least six varieties of beer by 3,000 BC and there is evidence it played a part in the social conventions of the age: in some circumstances if a man offered a lady a sip of his beer, they could be held to be betrothed so dating could be minefield for those who’d drunk too much.

The traditions associated with kash spread.  In Mesopotamia, tavern owners found guilty of overcharging patrons for beer could be sentenced to death by drowning in the Tigris or Euphrates rivers (depending on where the establishment was located) although most punishments were apparently commuted to fines.  The Ancient Babylonians, serious about beer making, to regulate quality decreed that any commercial beer maker who sold unfit beer was to be drowned in that very impure libation although no records exist which confirm how many were actually suck in their own dodgy brew.  The most attractive Babylonian tale (although not one all historians accept) is that more happily, a bride’s father would supply all the “honey" kash (a form of kash to which honey and sweet herbs were added) the groom could drink for one month after the wedding.  Because the calendar was lunar based, this month was referred to as the “honey moon”.

Sad

Sad (pronounced sad)

(1) Affected by unhappiness or grief; sorrowful or mournful; depressed, glum, melancholy; feeling mentally uncomfortable, discomforted, distressed, uncomfortable.

(2) Expressive of or characterized by sorrow.

(3) Unfortunate; unsatisfactory; shabby; in poor condition.

(4) Of color, somber, dark, or dull; drab; lacking brightness.

(5) Of music, an identifiable set of characteristics in composition which humans (with some cultural variations) perceive as evoking melancholy; poignant, touching.

(6) In slang, unfashionable; socially inadequate or undesirable deplorably bad; lamentable (probably interchangeable with “lame”).

(7) In slang (New Zealand), strongly to express displeasure.

(8) In baking (pastry, cakes et al) not having risen fully; heavy, soggy (no rare except regionally).

(9) As SAD, seasonal affective disorder.

(10) Heavy; weighty; ponderous; close; hard (obsolete).

(11) Valiant, firm or steadfast (obsolete).

(12) Dignified, serious, grave (obsolete).

(13) Sated, having had one's fill; satisfied, weary (obsolete).

(14) Naughty; troublesome; wicked (obsolete).

Pre 1000: From the Middle English sad, from the Old English sæd (grave, heavy, weary (originally “sated, full; having had one’s fill of food, drink, fighting etc)), from the Proto-Germanic sadaz (sated, satisfied), the source also of the Old Norse saðr, the Middle Dutch sat, the Dutch zad, the Old High German sat, the German satt and the Gothic saþs (satiated, sated, full)), akin to the Old Norse sathr, the Latin satis (enough) & satur (sated), and the Greek hádēn (enough), from the primitive Indo-European seto or seh- (to satiate, satisfy) from the root sa- (to satisfy).  Synonyms include unhappy, despondent, disconsolate, discouraged, gloomy, downcast, downhearted, depressed, dejected & melancholy; the antonyms including happy, cheerful, gleeful, upbeat & joyous.  Sad & saddening are nouns, verbs & adjectives, sadness is a noun, saddenest, sadded & sadding are verbs, sadly is an adverb, sadder & sadest are adjectives and sadden is verb & adjective; the noun plural is sads.  The special noun use of sad (plural sads) is as an alternative form of saad (the letter ص in the Arabic script which is the 14^th letter of the Arabic alphabet).

In Middle English & early Modern English the prevailing senses were "firmly established, set; hard, rigid, firm; sober, serious; orderly and regular but such notions (except in dialect) survive only among some bakers where the word is used to describe anything which has failed to rise and remains soggy, heavy and lacking fluffiness.  Etymologists assume the sense development was based on a transference of the idea of “heavy, ponderous” to Being “full” mentally or physically (ie “weary; tired of).  By the early fourteenth century, the familiar modern use to suggest “unhappy, sorrowful, melancholy, mournful” was established although a less supported alternative path of the change traces a course through the common Middle English sense of “steadfast, firmly established, fixed” (sad-ware described some notably tough pewter vessels) and “serious” to “grave.”  In the way sad is most used in Modern English, ultimately it replaced the Old English unrot which was the negative of rot (which confusingly to modern ears, meant “cheerful, glad”.  By the mid fourteenth century, the dominant meaning was to express “sorrow or melancholy” while the meaning “very bad, wicked” dates from the 1690s; that use faded but re-emerged in the late twentieth century, use the same way “lame” is deployed to describe the unfashionable or socially lamentable, a variation on the slang sense of “inferior, pathetic”, documented since 1899.  The “sad sack” (a usually miserable person)” dates from the 1920s and was popularized by World War II (1939-1945) era cartoon character published in US military magazine Yank, assumed by all to be a euphemistic shortening of the alliterative armed forces slang phrase sad sack of shit.

The verb sadden picked up the meaning “to make sorrowful” in the 1620s; until around circa 1600 it had meant “to make solid or firm” and the early verb was the simple sad, from the Middle English saden (become weary or indifferent (also “make (something) hard or stiff”, from the Old English sadian which may be the source of the modern verb but the history is tangled.  The intransitive meaning “to become sorrowful” dates from 1718.  The noun sadness developed from the early fourteenth century Middle English sadnesse (seriousness) and the reason it’s not entirely clear when the meaning shift to “sorrowfulness, dejection of mind” evolved is probably because there was such regional variation but it appears to have unfolded over the fifteenth & sixteenth centuries; throughout Middle English the word usually referred to “solidness, firmness, thickness, toughness; permanence, continuance; maturity; sanity”.  The adjective sadder (more sad) was from the Middle English sadder and saddest persist as the comparative & superlative forms.  The adverb sadly originally meant “heavily” & “solidly”, the use to convey “sorrowfully” emerging by the mid-fourteenth century.

Acronym Finder lists an impressive 104 acronyms or initialisms, some of the more memorable being Sex, Alcohol, Drugs; Social Anxiety Disorder; Search and Destroy; Seasonal Affective Disorder; Schizoaffective Disorder; Separation Anxiety Disorder; Stand Alone Dump; Single, Available & Desperate; Single Awareness Day (ie Valentine's Day); System Administrator (they prefer sysadmin or syscon); Scotland Against Drugs and Sullen, Angry, Depressed.

Seasonal Affective Disorder (SAD)

Avoiding SADness: Lindsay Lohan soaking up some sun in Prussian blue bikini with high-waist brief and halter-style top.

Seasonal affective disorder (SAD) is a particular instance of depression which is sometimes referred to as seasonal depression or winter depression.  SAD was first described in 1984 and included in the revision to the third edition (DSM-III-R (1987)) of the American Psychiatric Association's (APA) Diagnostic and Statistical Manual of Mental Disorders (DSM) as a “seasonal pattern”, a modifier applied to recurrent forms of mood disorders, rather than as an independent entity.  In the DSM-IV (1994), its status as a standalone condition was changed, no longer classified as a unique mood disorder but instead a specifier (called “with seasonal pattern”) for the “recurrent major depressive disorder that occurs at a specific time of the year and fully remits otherwise”.  In the DSM-5 (2013), although there were detail changes in terminology, the disorder was again identified as a type of depression (Major Depressive Disorder with Seasonal Pattern).  The symptoms of SAD often overlap with the behaviors & mood changes noted in clinical depression, the novelty being the condition manifesting usually during the fall (autumn) & winter when temperatures and lower and the hours of sunlight fewer, the symptoms tending to diminish with the onset of spring.  While notably less common, there are those who experience SAD during the summer and in either case it’s seen more frequently in women. SAD appears to be possible at any age but is most typically suffered in the age range 18-30.  In the US, the dynamic of the condition is illustrated by the diagnosis of SAD ranging from 1.4% of the population in sunny Florida to 9.9% in often gloomy Alaska and, after some initial sceptism, the condition was accepted as legitimate by most of the profession although there has been some contradictory research.  Although in a sense SAD has for centuries been documented in the works of poets and artists, it wasn’t until the mid-twentieth century that structured research began and it has been linked to a biochemical imbalance in the brain prompted by exposure to reduced hours of daylight and a reduction in sunlight.  It’s thought that as the seasons go by, some experience a shift in their internal “biological clock” (circadian rhythm) which induces the mechanism to become asynchronous with their daily schedule.  SAD appears more prevalent among those living far from the equator where the conditions in winter are exaggerated.

Common symptoms of SAD include fatigue (even among those who increase their daily hours of sleep) and the weight gain associated with overeating and carbohydrate cravings.  The symptoms can vary from mild to severe and in many cases are little different to those associated with major depression including:

(1) Feeling sad or having a depressed mood.

(2) Loss of interest or pleasure in activities once enjoyed.

(3) Changes in appetite; usually eating more, craving carbohydrates.

(4) Change in sleep patterns (usually sleeping too much).

(5) Loss of energy or increased fatigue despite increased hours of sleep.

(6) Increase in purposeless physical activity (eg inability to sit still, pacing, handwringing) or slowed movements or speech (to be clinically significant these actions must be severe enough to be observable to others).

(7) Feelings of worthlessness or guilt.

(8) Difficulty thinking, concentrating, or making decisions.

(9) Thoughts of death or suicide.

Risking SADness: Lindsay Lohan's strangely neglected film Among the Shadows (Momentum Pictures, 2019) was also released in some markets as The Shadow Within.  It's a gloomy piece, shot almost wholly in darkness and revolves around murderous werewolves and EU politicians (two quite frightening species).

There are several treatments for SAD including light therapy, antidepressant medications & talk therapy, sometimes used in combination.  Light therapy involves sitting in front of a light therapy box which emits a very bright light (while filtering-out harmful ultraviolet (UV) rays), usually for at least 20 minutes per day, typically first thing in the morning, during the winter months.  Most report some improvement after undergoing light therapy within 1-2 weeks of beginning treatment but the best results are obtained and relapse is most often prevented if the treatment is continued through the winter.  This is definitely a treatment rather than a cure and many re-start the therapy in the early fall to prevent any onset.  Talk therapy, particularly cognitive behavior therapy (CBT), has been used to treat SAD and the results appear to be similar to those suffering other forms of depression.  Selective serotonin reuptake inhibitors (SSRIs) are the anti-depressants most commonly used to treat SAD.

Rjukan's three-mirror array, reflecting the Sun's rays on the town square below.  Each mirror is 17²m (183 square feet).

The Norwegian town of Rjukan sits some 3 hours north-west of the capital, Oslo and is famously one of the darkest inhabited settlements on Earth, wholly without sun for five months of the year.  Some 3400 souls live in Rjukan, the town created by Norsk Hydro, the electricity company which built a hydro-electric plant on the nearby falls to generate large quantities of electricity.  The reason it spends so long in darkness is because it sits in a valley, surrounded by mountains which block the light.  In 1928, Norsk Hydro built a cable car to permit the town's residents to travel to the mountain top to enjoy some sunshine but recently, the town spent 5 million Norwegian Kroner (US$4.95 million) to install an array of moving mirrors to direct sunlight to the town square.  Solar-powered, the mirrors sit 450-metres up the slope and track the movement of the sun.  Not only has the innovation brought light into the lives of the locals but the motorized mirrors have become a tourist attraction.  The idea of such a mirror was actually not new and had been discussed since 1913 but one was installed only in 2013.

Citizens in the reflected Sunshine.

Pit

Pit (pronounced pit)

(1) A naturally formed or excavated hole or cavity in the ground.

(2) A covered or concealed excavation in the ground, serving as a trap for animals.

(3) In extractive mining, an excavation made in exploring for or removing a mineral deposit (also known (at scale) as “open-cut” as opposed to “underground” (although in casual use sometime used also of the mineshafts used in underground operations.  It can in mining slang also refer to an entire mine site, regardless of the mode of extraction.

(4) The stone of a fruit (cherry, peach, plum etc) and technically, the hard, inner layer (the endocarp) of certain drupes.

(5) The abode of evil spirits and lost souls; hell; the depths of Hades.

(6) In slang (as “the pits”) an extremely unpleasant, boring, or depressing place, condition, person, etc; the absolute worst (used also as a clipping of armpits).

(7) A hollow or indentation in a surface (in substances like glass or when referring to surfaces (paint, varnish etc), treated usually as an imperfection).

(8) In physiology, natural hollow or depression in the body, organ, structure or part; fossa (used most often of the small of the back).

(9) In medicine, a small, indented scar, as one of at the site of a former pustule after smallpox, chicken pox or similar diseases; a pockmark.

(10) In music, a section of the marching band containing mallet percussion instruments and other large percussion instruments too large to march, such as the tam tam; the area on the sidelines where these instruments are placed.

(11) In botany, any of various small areas in a plant cell wall that remain un-thickened when the rest of the cell becomes lignified (used especially of the vascular tissue).

(12) In archaeology, a hole or trench in the ground, excavated according to grid coordinates, so that the provenance of any feature observed and any specimen or artifact revealed may be established by precise measurement.

(13) An enclosure, usually below the level of the spectators, as for staging fights between dogs, cocks, or, formerly, bears (as cockpit later extended to aircraft, cars, boats etc).

(14) In physical markets (such as a commodity exchange), a part of the floor of the exchange where trading is conducted (known in some places as “as open outcry pits” because transactions were done by traders shouting offers & acceptances at each other).

(15) In architecture, all that part of the main floor of a theater behind the musicians (in UK use also the main floor of a theater behind the stalls); sometimes used as “orchestra pit” (the area that is occupied by the orchestra in a theatre, located in front of the stage)

(16) In a hoist-way, a space below the level of the lowest floor served.

(17) In motorsport, an area at the side of a track, for servicing and refueling the cars (the use later adopted by cycle racing).

(18) In ten-pin bowling, the sunken area of a bowling alley behind the pins, for the placement or recovery of pins that have been knocked down.

(19) In track athletics,  the area forward of the takeoff point in a jumping event, as the broad jump or pole vault, that is filled with sawdust or soft earth to lessen the force of the jumper's landing.

(20) In casinos, the area or room containing gambling tables.

(21) In aviation, the part of the aircraft (usually the bottom of the fuselage) given over to freight; a luggage hold.

(22) In American football, the center of the line.

(23) In hospital slang, the emergency department.

(24) Literally, the bottom part (lowest point) of something; figuratively an undesirable location (especially if dirty, dangerous etc).

(25) In military slang, a bed (some evidence also of civilian (presumably ex-military) use).

(26) In nuclear physics, the core of an implosion nuclear weapon, consisting of the fissile material and any neutron reflector or tamper bonded to it.

(27) To mark or indent with pits or depressions.

(28) In medicine, to scar with pockmarks.

(29) In physiology (of body tissue) temporarily to retain a mark of pressure, as by a finger, instrument, etc.

(30) To place or bury something in a pit, as for storage.

(31) To set in opposition or combat, as one against another (usually in the forms “pit against” or “pitted against”).

(32) In motorsport, to exit from the track, entering the pits, to permit the pit-crew to effect a pit-stop.

(33) To remove the stone of a fruit (cherry, peach, or plum), sometimes with the use of a pitter (if something done vocationally, by a pitter, usually with the use of a pitter).

Pre 900: From the Middle English noun pit, pittle, pite, pute, put & putte, from the Old English pytt (natural or man-made depression in the ground, water hole, well; grave (the Kentish variation was “pet”), from the Proto-West Germanic puti, from the Proto-Germanic putt- (pool, puddle) which was the source also of the Old Frisian pet, the Old Saxon putti, the Old Norse pyttr, the Middle Dutch putte, the Dutch put, the Old High German pfuzza and the German Pfütze (pool, puddle), an early borrowing from Latin puteus (pit, trench, shaft) (etymologists noting the phonetic difficulties which exist also in the speculated relationship between puteus and the primitive Indo-European root pau- (to cut, strike, stamp).  Because the short u makes it unlikely puteus was from paviō (to strike), it might instead be linked to putāre (to prune) but the distance between the meanings makes etymologists just as sceptical and some suggest puteus may be a loanword though the spelling might be mysterious.  The use in the context of stone fruit was an Americanism dating from 1841, from the Dutch pet (kernel, seed, marrow), from the Middle Dutch pitte & pit (kernel, core (and cognate with pith)), from the Proto-Germanic pittan (the dialectal German Pfitze (pimple) was an oblique of the Proto-Germanic piþō), from the Proto-Germanic pithan- (source of pith).  Like the use in other contexts, each instance of the verb was derivative of the noun.  Pit is a noun & verb, pitter is a noun and pitted & pitting are verbs; the noun plural is pits.

Ford GT40 pit-stop, Sebring 12 Hours, International Championship for Makes, Sebring, March 1966.

The meaning “abode of evil spirits, hell” dates from the late twelfth century, one of the many means in the medieval world of referring to hell.  The meaning “very small depression or dent in the surface of an object” was in use by the early 1400s, the anatomical sense of “natural depression or hollow in some part of the body” from more than a century earlier.  The “pit of the stomach” was in the literature by the 1650s and it was so-called from the slight depression there between the ribs; the earlier terms used by doctors were the late fourteenth century breast-pit and heart-pit from circa 1300.  The meaning “part of a theater on the floor of the house, lower than the stage” was known by the 1640s while in market trading, the sense of “that part of the floor of an exchange where business is carried on” was first documented in 1903 as a coining in US English.

One of the high-water marks of the analog era: cockpit of the Anglo-French Concorde.

The phrase money-pit in the sense of “an edifice or project requiring constant outlay of cash with little to show for it” is quite modern, dating only from 1986 and assumed derived from the popular movie of the same name of the same name released that year (though it’s not impossible it had earlier been in regional use).  The prior use had been in the 1930s when it was used of the shaft on Oak Island, Nova Scotia which legend suggested would lead one to treasure buried by Captain Kidd or some other pirate.  Popular Mechanics magazine in September noted wryly the term might better refer to the millions spent trying to get the treasure out than the hoard of gold itself and in 2022, entrepreneurial engineer Elon Musk (b 1971) produced a variation, describing the factories in Europe building the electric Tesla cars as “money furnaces”.  The ash-pit (repository for ashes, especially the lower part of a furnace) dates from 1797 and it replaced the earlier (1640s) ash-hole, reflecting the implications of industrialization as forges and furnaces grew larger.  The venomous snake the pit-viper was so-named in 1872 because of the characteristic depression between the eyes and nose.  In commercial forestry, the pit-saw was first described in the 1670s, referring to a large saw operated by two men, one (the pit-sawyer) standing in the pit below the log being sawed, the other (the top-sawyer) standing atop.  Pitman was one of a wealth of vocationally-derived surnames which began to appear late in the twelfth century and it referred to one who dwelled literally “in or by a pit or hollow”, the use to describe someone who “works in a pit or mine” not documented until 1761.  Pitman shorthand, a popular form of hand-written transcription of spoken-word text which could later be read by a typist (often the “shorthand-taker) came into use in the 1860s, having been devised by English teacher & publisher (and devoted vegetarian) Sir Isaac Pitman (1813-1897) in 1837.  The phrase “flea-pit” dates from the 1920s and was used of cinemas, an allusion to the seats being infested with fleas or other bugs.

A Lindsay Lohan pit-stop from the blooper tape, Herbie: Fully Loaded (2005).

The noun armpit was a mid-fourteenth century description of the “hollow place under the shoulder” and it ran in parallel with the earlier arm-hole although the latter use faded as it came to be used of clothing and as an anatomical descriptor it was obsolete by the mid seventeenth century.  There was also the early fifteenth century asselle, from the Old French asselle, from the Latin axilla but armpit prevailed.  The colloquial phrase “armpit of the nation” was used as a term of derision for any place thought ugly and disgusting and it’s not clear when it emerged but it was well-documented from the early 1960s.  The general term “the pits” was a variation and from late in the twentieth century applied to anything or anyone thought the worse possible of their type (ie based on something hairy, smelly and ugly).  Infamously, it was used by the US tennis player John McEnroe (b 1959) who at Wimbledon in 1981 called an umpire “the pits of the world” during one of their discussions.  The noun pitter (curved instrument for removing stones from cherries and other fruit” appeared in 1868 when pitters were made available as a commercial product (doubtlessly they had for centuries been improvised or adapted from other utensils) and where they were used vocationally, the user was also called a pitter, the same linguistic process which produced the dual use of shucker in the oyster business (the termed adopted also by others).  Pit-a-pat & pitter-pat, being imitative, are wholly unrelated and date from the 1520s, the noun emerging in 1580.

Boeing 787 Dreamliner cockpit.

The original cockpits were first described in the 1580s and were a “pit or enclosed space for fighting cocks”, the use soon extended to any space in which animals were set to fight to the death, the audience betting on the outcome.  From this came the verb use “to pit against” which meant “to put or set in or into a pit” and this soon extended to boxing; by the eighteenth century in figurative use it was used on any conflict, argument or rivalry.  The general verb use (make pits in; form a small pit or hollow) had been in used (as pit, pitted & pitting) by the late fifteenth century.  The dog breed pit-bull dates from 1922 and was short for pit-bull terrier (first registered in 1912), a type noted for its aggression a fighting abilities.  Cockpit was used of ships early in the eighteenth century of midshipmen's compartment below decks and in some cases was later applied also to the enclosed cabins located towards the centre of the deck began to replace the steerage systems at the stern (later universally known as the “bridge”.  It was picked up for the pilot’s compartment in aircraft in 1914 and (by extension) was used in racing cars in the 1930s.  The word cesspit was created in the 1860s because advances in plumbing meant something was needed to distinguish more modern systems handling sewerage from the earlier cesspool, in use since the 1670s.  The mid fourteenth century pitfall (concealed hole into which a person or animal may fall unawares) was a description of a physical danger which came into figurative in the early 1600s to refer to “any hidden danger or concealed source of disaster.  In mining, a pitfall could also be literally a collapse of the internal structure of a mineshaft, sometime because of the catastrophic failure of pit-props (the timbers which provided the structural integrity of a shaft).  Sometimes a mile or more deep, pitfalls frequently were fatal and the death-toll among miners was high, the phrase “pit-hell” often heard.

The original pits at the Indianapolis Speedway, 1913. 

It was difficult and expensive (and often impossible) to lift heavy machinery to allow mechanics to work on engines or other components so, where possible, it was better to construct a pit underneath from which people could work.  The concept was well documented in workshops by 1839 and the term was by 1912 picked up in motorsport to describe the “area at the side of a track where cars are serviced and repaired” and the early pits were often holes in the ground with waist-high surrounds in which the crew could stand.  They were used also to store spare tyres, parts lubricants etc.  As the sport boomed, the pits quickly became fully enclosed service areas and even garages, built along pit-lane.  When a driver brought his car into the pits (located on the stretch of track called pit-straight), they were said to be pitting to be worked on by the pit crew who might during the pit-stop make repairs, re-fuel or change tyres, either in front of or behind the pit-wall.  Pit crew became a popular term beyond the tracks, used of airline baggage handlers, sea-port staff etc.  In motorsport, a pit-babe is an attractive young lady who is in the pit area for some reason, not necessarily directly related to the competition.

The pit-babes: coming or going, they always look good. 

Gaffer & Duct

Gaffer (pronounced gaf-er)

(1) The chief electrician on the set of a movie or television show.

(2) In informal use, a boss, supervisor, or manager.

(3) In informal use, an old man, especially one living in the country (often used affectionately or patronizingly).

(4) A foreman or overseer in charge of a group of physical laborers; the coach or manager of a sports team.

(5) In glassmaking, a master glassblower responsible for shaping glassware.

(6) Slang for boy or youth (unique to Ireland); used in maritime regions to refer to the baby of the house.

(7) A type of tape used usually as a safety device to tape-down cables to reduce the risk of tripping hazards (technically gaffer’s tape).

(8) In slang, as “to gaff”, “gaffered” or ”to gaffer”, a description of some temporary or roughly improvised repair using gaffer tape or some other quick and dirty method; “to make a gaff” as a description of a mistake is a variation of this.

1565–1575: Thought likely to be a contraction of godfather, but with the vowels influenced by grandfather.  The use to describe “an elderly rustic" was apparently based on continental analogies (compare gammer and the related French compère and German Gevatter).  It seems originally to have been a term of respect, also applied familiarly; from "old man" and was by 1841 extended to foremen and supervisors generally.  In UK police forces, it’s common slang to describe the officer in charge of a particular section or squad and in Association Football (soccer), the head coach or manager.

In the early twentieth century, it was carried over to the electrician or technician in charge of lighting on a film set because the natural lighting on early film sets was adjusted by opening and closing flaps in the tent, these cloths called gaff cloths or gaff flaps.  Because the technician used a long pole with a hook known as a “gaff hook”, he came to be known as a “the gaff hooker” and, as English does when users find there are too many syllables, this was truncated to “the gaffer”.  The tape later used for electrical cables was almost exclusively in the gaffers' toolboxes and thus became “gaffer’s tape”.  Now it’s known almost always as “gaffer tape”.

Duct (pronounced duhkt)

(1) Any tube, canal, pipe, or conduit by which a fluid, air, or other substance is conducted or conveyed.

(2) In anatomy and zoology, a tube, canal, or vessel conveying a body fluid, especially a glandular secretion or excretion.

(3) In botany, a cavity or vessel formed by elongated cells or by many cells.

(4) In the infrastructure of electricity, a single enclosed runway for conductors or cables.

(5) In a printing press, the reservoir for ink.

(6) Guidance; direction; quotation (obsolete).

1640-1650: From the Latin ductus (conveyance of water; a leading, a conduit pipe), noun use of the past participle of ducere (to lead) from dūcō (I lead, draw), from the primitive Indo-European root deuk (to lead).  Use has endured in the Medieval Latin aqueduct and the high rank of aristocracy, duke, drawn from the past participle of ducere (to lead); the construct was duc (variant stem of dūcere (to lead)) + tus (suffix of verbal action).  The meaning in an anatomical sense (vessel of an animal body by which blood, lymph etc, are conveyed) was first noted in the 1660s while that of a "conduit or channel" dates from 1713.  Use in a variety of architectural and engineering contexts to describe "tubes in a structure" developed after the use to describe an "air tube" in 1884.

Duct tape was in 1894 originally sold under the name duck tape, long, non-adhesive strips of plain cotton duck cloth used in various mechanical processes.  The name was transferred to a plastic-coated adhesive tape used by U.S. soldiers in World War II, probably because of its waterproof qualities (ie the sense of "water off a duck's back").  It continued in civilian use after the war, and the name shifted to duct tape by 1958, perhaps because the most common use was in air ducts, which also accounts for its still standard silver-gray color.

Duct and Gaffer Tape

Duct tape scene: Lindsay Lohan as Tess Conway in Freaky Friday (2003).

Often casually regarded as interchangeable, duct and gaffer tapes are constructed differently because they’re intended for different purposes.  Indeed, using one for the intended application of the other can cause messy or worse results.  They’re similar in that both are hand-tearable, conform well to uneven surfaces and tend to be sold in the same packaging and sizes.  Duct tape is constructed with a polyethylene (PE) cloth backing, a material that makes it waterproof and contains an aggressive, rubber-based glue, allowing it easily to adhere to many of surfaces.   Duct tape has (1) a shiny, reflective backing, (2) is for semi-permanent or permanent applications and (3) tends to leave an adhesive residue when removed.  A specialized variation is a heat-resistant foil (not cloth) duct tape, useful for sealing heating and cooling ducts.  For decades silvery gray, it’s now available in colors and even printed designs.

Lindsay Lohan in duct tape cocktail dress.  Tape is 3M Utility Duct Tape 2929 (Silver).  Shoes are Jimmy Choo Patent Leather Sandals.

Gaffer tape is made with a coated cloth backing and a synthetic, rubber-based glue.  Because it doesn’t have the PE backing, gaffer tape is not waterproof but, the barrier properties in the backing make it moisture resistant in most cases.  This means it shouldn’t be used for waterproofing but is suitable for temporary use in high-humidity and moist environments. The adhesive on gaffer tape is less aggressive than duct tape, rendering it more easily removed when temporary need is over.  Because of its origins in the theatre, gaffer tape traditionally had a matte white or black backing to reduce the reflection of light but is now available in colored gloss finishes.