Acid

Acid (pronounced as-id)

(1) In chemistry, a compound usually having a sour taste and capable of neutralizing alkalis and reddening blue litmus paper, containing hydrogen that can be replaced by a metal or an electropositive group to form a salt, or containing an atom that can accept a pair of electrons from a base. Acids are proton donors that yield hydronium ions in water solution, or electron-pair acceptors that combine with electron-pair donors or bases; having a pH value of less than 7.

(2) In chemistry, any compound which easily donates protons (a Brønsted acid); any of a class of water-soluble compounds, having sour taste, that turn blue litmus red, and react with some metals to liberate hydrogen, and with bases to form salts; any compound that can accept a pair of electrons to form a covalent bond (a Lewis acid).

(3) A substance sour, sharp, or biting to the taste; tart; having the taste of vinegar.

(4) Something, as a remark or piece of writing, that is sharp, sour, or ill-natured.

(5) A slang term for the hallucinogenic drug Lysergic acid diethylamide (LSD).

(6) In metallurgy, noting, pertaining to, or made by a process in which the lining of the furnace, or the slag that is present; functions as an acid in high-temperature reactions in taking electrons from oxide ions: usually a siliceous material, as sand or ganister.

(7) Of or pertaining to an acid; acidic.

(8) In pop music, a genre that is a distortion (as if hallucinogenic) of an existing genre, as in acid house, acid jazz, acid rock etc.

1620-1630: From the French acide, from Latin acidus (sour, sharp, tart (and used also figuratively to suggest "disagreeable” etc)), adjective of state from acere (to be sour, be sharp) and akin to ācer (sharp) & acētum (vinegar), from aceō (I am sour); doublet of agita.  Root was the primitive Indo-European ak (be sharp, rise (out) to a point, pierce).

The figurative use (sour-tempered; acerbic) in English dates from 1775 and came to be applied to intense colors after 1916.  The process of the acid dye was invented in 1888 and used an acid bath. The “acid test” is American English from 1881, originally a quick way to distinguish gold from similar metals by application of nitric acid, it came to be used figuratively (and not always accurately) in the same senses as “litmus test”.  The “Acid drop”, a kind of hard sugar candy flavored with tartaric acid, was first sold in 1835, the noun “drop” applied in the sense of a lozenge.  The noun appeared in the 1690s, derived from the adjective and was originally applied (rather loosely) to just about any substance tasting like vinegar; the more precise parameters defined only in the early eighteenth century as the techniques of modern chemistry came to be refined.  In the chemical sense, the antonym is alkaline.  The term “acid rain” (highly acidic rain caused by atmospheric pollution) was in 1872 coined by Scottish chemist (Robert) Angus Smith (1817–1884) although it wouldn’t be for another hundred years before if came into general use.  Diana, Princess of Wales (1961–1997) coined a nickname for her step-mother, Raine Spencer (1929-2016): Acid Raine.  

Acid as a slang term for the hallucinogenic drug Lysergic acid diethylamide (LSD) dates from 1966.  From the same year “acid rock” was originally a descriptor applied to music performed by those who were tripping on LSD (or what they sounded like suggested they might be) but, as acid rockers, soon applied equally to the audience.  The adjective before long was bolted onto a wide variety of pop music (acid jazz, acid folk etc), acid house from 1988 probably the most enduring as a marketing term. 

LSD-25 Auto.

In an example of cross-breeding in marketing,"LSD-25 Auto" is a strain of weed.  The retailers recommend LSD-25 Auto to those who “love purple strains”, praising her “tightly packed trichomes”… “clustered around the hypnotic purple shining buds that have a stacked and long characteristic”.  “Bag appeal” is said to be “on the next level” and able to “blast you into another dimension and keep you there”.  Being “mind-bending and certainly on the trippy side”, she’s said to be “best suited for smokers with a high tolerance to cerebral roller coasters and those who enjoy high concentration levels and spurts of creativity”.  For those still unsure, they caution that “novice smokers should take in moderation”.

Cutaway drawing of limited slip differential (LSD).

LSD is also the abbreviation for the limited slip differential, a device used in motor vehicles which allows a differential’s two output shafts to rotate at different speeds within a defined permissible difference in speed.  LSDs are used to improve traction under extreme conditions and the usual slang is “slippery-diff”.  LSD was also the historic abbreviation for the currency denominations used by UK prior to the decimalization of Sterling in 1971.  Although pre-1971 Sterling (based on there being 12 pennies to the shilling and 20 shillings to the pound) also used guineas, half crowns, threepenny bits, sixpences and florins, LSD referenced just the base units: pounds, shillings and pence.  The abbreviation LSD dates from Ancient Rome when a pound of silver was divided into 240 pence (or denarius) and the Latin currency denominations were librae, solidi, and denarii.  In veterinary science, LSD is also the standard abbreviation for lumpy skin disease, a viral disease of cattle and water buffalo.

Lindsay Lohan in Peter Thomas Roth’s campaign promoting Water Drench Hyaluronic Cloud Hydra-Gel Eye Patches.

The active ingredient in the patches is hyaluronic acid, a gooey, slippery substance produced naturally throughout the body and at its highest concentration in the eyes, joints and skin.  Best visualized as a lubricant, it works by providing a fluid cushion between tissues which would otherwise grind against each other.  As a lubricant, hyaluronic acid has remarkable properties, one teaspoon of the stuff able to absorb and retain some 6 US gallons (22¾ litres) of water, a reason why it’s used in the treatment of dry eyes and is a popular additive in in moisturizing creams, lotions, ointments and serums.  Hyaluronic acid is often produced by fermenting certain types of bacteria (rooster combs (the red, Mohawk-like growth on top of a rooster’s head and face) a common source) something the beauty industry dwells on less than the use to enhance the way skin stretches and flexes, reducing wrinkles.  It said also to be helpful in wound healing and the reduction in scarring.

Because of the popular association science fiction and gaming with toxic, flesh dissolving fluids (sometimes flowing through the veins of aliens) the word “acid” evokes horror in many but the body naturally produces many acids and it depends on these interacting with everything else to ensure good health and acids in many forms are in every diet.  An apple (a typical example containing up to 300 chemicals) for example includes pantothenic acid (B5), citric acid, tartaric acid & acetic acid while its taste depends on the concentration of malic acid.  Pantothenic is a combination of pantoic acid and β-alanine, the name pantohenic from the Greek πάντοθεν (pantothen) (from everywhere), the name chosen by chemists because, at least in tiny quantities, it’s present in almost all foods.  Familiar too is the pain-killer aspirin, now taken by many in low-dose form (100 mg or 1½ grains), a regime first recommended as a blood-thinner for those with certain risk factors for heart disease but later adopted by those impressed with the apparent protection offered against many internal cancers.  To a chemist, what we call the non-steroidal anti-inflammatory drug aspirin is acetylsalicylic acid (usually pronounced uh-seet-l-sal-uh-sil-ik as-id).  

Lysergic acid diethylamide

LSD, known colloquially as acid, is a drug known for its psychological effects. This includes altered awareness of surroundings, perceptions, and feelings as well as sensations and images that seem real though they are not.  It’s thus most often described as a hallucinogenic and the one which first generated a moral-panic although there has never been any evidence to support the stories which circulated telling cautionary tales of users leaping to their deaths from tall buildings, thinking themselves able to fly.  The urban myths persist to this day.

LSD was created in Basel in November, 1938 by Swiss chemist Albert Hofmann (1906–2008).  Dr Hofmann synthesized LSD after examining the constituents of the well-known medicinal plant Drimia maritima (squill) and the fungus ergot, the breakthrough moment apparently his understanding of the chemical structure of the squill's Scilla glycosides but the famous properties were discovered only serendipitously, his pharmaceutical research for a unrelated purpose.  It wasn't until 1943 that Dr Hofmann conducted any research on the possibilities LSD might offer using what he then regarded as side-effects.  In a long-known scientific tradition, he tested it on himself, thus enjoying the first acid-trip.

Having no bad trips, he continued the research and LSD (acronym for the German Lyserg-säure-diäthylamid) was in 1947 introduced as a commercial medication under the trade-name Delysid and intended for various psychiatric uses.  In the 1950s, the CIA thought the drug might be useful for mind control and chemical warfare, their tests conducted on young servicemen and students, usually without anything even close to informed consent.  Its possibilities interested psychiatrists and it was a popular subject in experimental research, the design of many of which would today appall ethics committees and terrify the lawyers.

President Richard Nixon (1913-1994; US president 1969-1974) explaining to congress aspects the message sent to the Congress on 17 June 1971, requesting the appropriation of an additional US$155 million for a “war on drugs”.  Egil Krogh (1939-2020 left) was deputy director of the Domestic Council and Dr Jerome Jaffe (b 1933, right) was hired to lead a new drug strategy and was usually referred to as Nixon’s “drugs tsar”.  Egil Krogh was later jailed for his involvement in the Watergate affair.

The subsequent recreational use in the Western world, an outgrowth of the 1960s counterculture, resulted in its worldwide prohibition in 1971, one of the most obvious casualties of the Nixon administration’s “war on drugs” which has around the world been for fifty-odd years waged with many consequences but little apparent effect on the demand for drugs, supply now at historically high levels, outpacing the increase in population.  Fifty years on, LSD remains popular though the extent of its use varies according to supply which tends to be dictated more by the economics of production and distribution than demand, the illicit drug business really preferring other substances because LSD is not addictive.  Of late there’s been much renewed interest in the possibilities offered by therapeutic hallucinogenics, the encouraging findings in DMT, LSD, mescaline & psilocybin research drawing in venture capital, the odd start-up picking up not only where things were left off in 1971 but working with more recently synthesised compounds.  Their difficulties are less scientific than regulatory.

Notable moments in Acid Rock

Todd Rundgren: A Wizard, a True Star (1973).

It’s not known if most listeners recovered from this but Todd Rundgren probably never did, his subsequent output so discursive that the many audiences he sought and sometimes gained never coalesced into a consistent following.   A Wizard, a True Star is there to be enjoyed as his psychedelic phase; just don’t expect more of the same.

Grateful Dead: Aoxomoxoa (1969).

Anthem of the Sun (1968) cast such a shadow that few dead heads list Aoxomoxoa as the band’s finest but none deny it’s the most psychedelic the Dead ever got in the studio.  The hippie-dippy vibe is of course more on display on many of the live releases (bootlegs and otherwise) but on Aoxomoxoa there are enough of the long, circular guitar lines for any tripper to keep tripping.  Unlike some of the European electronica which would follow, the Dead sound best through speakers rather than headphones but, at the time, the effect of Quadraphonic divided opinion.

The Jimi Hendrix Experience: Electric Ladyland (1968).

Not all of Electric Ladyland was as psychedelic as the reputation suggests but, spread over two records, there was room to move and psychedelia does at least tinge much of the blues for which this is remembered.  Some trippers however resist the epic length Voodoo Chile and go straight to side three of the original vinyl, setting the turntable to repeat.

Spirit: Twelve Dreams of Dr Sardonicus (1970).

Although not released until the era’s historic moment had passed with the implosion of the San Francisco ecosystem which fed the beast, Twelve Dreams Of Dr Sardonicus is the retrospective encapsulation of the psychedelic and is Spirit’s masterpiece.  Lyrically one long, strange trip, it’s also musically playful, mixing (rather than fusing) the most clichéd of the motifs of jazz, pop & rock.  This is acid rock’s period piece.

Pink Floyd: More (1969).

So much has Dark Side of the Moon (1973) loomed over Pink Floyd that their early work is neglected by all but a few.  In some cases the indifference is not undeserved but, influenced by the late Syd Barrett (1946-2006), before they were a staple of FM radio, Pink Floyd were certainly somewhere on the psychedelic spectrum and while The Piper At The Gates Of Dawn (1967) hints at it, their work in a trilogy of film soundtracks, More (1969), Zabriskie Point (1970) & Obscured by Clouds (1972) tracks the path of acid-rock.  The best approach is said to be to watch Zabriskie Point with the sound turned down while the album plays on repeat and a true aficionado will drop some acid a few minutes before putting on the headphones.

Sheryl Crow: There goes the neighborhood

Hey let's party
Let's get down
Let's turn the radio on
This is the meltdown
Get out the camera
Take a picture
The drag queens and the freaks
Are all out on the town
And cowboy Jane's in bed
Nursing a swollen head
 
Sunshine Sally and Peter Ustanov
Don't like the scene any how
I dropped acid on a Saturday night
Just to see what the fuss was about
Now there goes the neighborhood
 
The photo chick made to look sickly
Is standing in her panties in the shower
She plays the guitar in the bathroom
While the police dust her mother's plastic flowers
And Schoolboy John's in jail
Making a killing through the U.S. mail
 
Sunshine Sally and Peter Ustanov
Don't like the scene any how
I dropped acid on a Saturday night
Just to see what the fuss was about
Now there goes the neighborhood
 
This is the movie of the screenplay
Of the book about a girl who meets a junkie.
The messenger gets shot down
Just for carrying the message to a flunkie.
We can't be certain who the villans are 'cuz everyone's so pretty
But the afterparty's sure to be a wing-ding as it moves into your city
 
Sunshine Sally and Peter Ustanov
Don't like the scene any how
I dropped acid on a Saturday night
Just to see what the stink was about
Now there goes the neighbourhood.

Freckle

Freckle (pronounced frek-uhl)

(1) One of the small, brownish spots on the skin that are caused by a localized deposition of the pigment melanin and that increase in number and darken on exposure to sunlight.

(2) Any small spot or discoloration.

(3) To cover with freckles; produce freckles on.

(4) To become freckled.

(5) In Australia, a small, disk-like sweet consisting of a flattish mound of chocolate covered in hundreds and thousands.

1350-1400: From the Middle English freken & frekel, from the Old Norse (plural) freknur (freckles) (and related to the Old Norse freknōttr (speckled) the Swedish fräkna & fräknar, the Norwegian & Icelandic frekna and the Danish fregne & fregner), a variant of the Old English sprecel from the Proto-Germanic sprekalą (freckle) (and related to the dialectal Norwegian sprekla and the Middle High German spreckel), from the primitive Indo-European sp(h)er(e)g- (to strew, to sprinkle).  It was cognate with the Albanian fruth (measles).  The verb freckle (to cover with spots) dated from the 1610s, the adjective freckled existing since the late fourteen century in the sense of “spotted”.  Freckle is a noun & verb, freckled & freckly are adjective and the verbs (used without object) are freckled & freckling.  The noun plural is freckles and the long obsolete alternative form from the late fourteenth century was frecken.

The similar noun fleck (a mark on skin, a freckle) from the 1590s was presumably from the verb fleck or a related word elsewhere in Germanic, such as the Middle Dutch vlecke or the Old Norse flekkr (a fleck, spot); from circa 1750 meaning extended to "a small particle" and from 1804. "a patch, a spot" of any kind.  The technical term for a freckle is ephelis.  Ephelis is from the Latin ephēlis, from the Ancient Greek ἔφηλῐς (éphēlis) (a freckle), the construct being ἐπ- (ep-) (upon, over, (ie epi-)) +‎ ἥλῐος (hḗlios) (the sun) +‎ -ῐς (-is), the nominal suffix).  The plural is ephelides.  The freckle (ephelis) differs from a lentigo in that a lentigo is a pigmented flat or slightly raised lesion with a clearly defined edge.  Unlike an ephelis (freckle), it does not fade in the winter months and dermatologists define several kinds of lentigo. The name lentigo originally referred to its appearance resembling a small lentil and they’re often now referred to as beauty spots or marks, a la Marilyn Munroe.  To a dermatologist, freckle & ephelis are synonymous but in general vaguely related words include synonyms include blemish, blotch, mole, daisy, dot, lentigo, macula, patch, pepper, pigmentation, pit, pock, pockmark, speck, speckle, sprinkle & stipple.

A freckle is an area of the skin with more pigmentation than the surrounding area, a clustering of concentrated melaninized cells which appear more obvious on those with light skin.  Counter intuitively, the skin which manifests as a freckle doesn’t have any more melanin-producing cells (or melanocytes) than the surrounding skin but instead has melanocytes that overproduce melanin granules (melanosomes), thus darkening the color of the outer cells (keratinocytes).  In this, a freckle differs from a mole in that the latter is an accumulation of melanocytes in a small area.  One who is heavily freckled is said to be "lentiginous", a learned borrowing from Latin lentīginōsus (freckled).

#freckles: Lindsay Lohan out shopping.

Of the six skin types on the Fitzpatrick spectrum, (1) Pale white skin with blue or green eyes & blonde or red hair (always burns, does not tan), (2), Fair skin with blue eyes (burns easily, tans poorly), (3), Darker white skin (tans after initial burn), (4), Light brown skin (burns minimally, tans easily), (5), Brown skin (rarely burns, tans darkly & easily & (6), Dark brown or black skin, freckles appear most frequently and are most apparent upon types (1) & (2) but can exist on anyone.  Like just about everything, the existence of freckles ultimately dependent on genetics and related to a particular gene although geneticists note the presence of at least one of two or more versions of the MC1R gene is usually required for freckles to form, the genetic combination does not guarantee an instance and in their absence, freckles may still exist.  Thus those with the gene combination are much more likely to be freckled while in those without, the instance is rare.  The MC1R gene correlates even more strongly with the red hair which is, impressionistically, so associated with freckles and it is true the two are the most frequently seen combination among the freckled, most red-heads having two variants of the MC1R gene and almost all have one.  Freckling exists even among populations, such as those of East Asia, where there is no natural occurrence of red hair but there, while genetically determined, it’s a different gene from MC1R, intriguingly one found in European populations where any influence on pigmentation is rare.

Lindsay Lohan's fridge magnet.

For centuries, many with freckles have sought their removal and by the nineteenth century, demand meant the process was part of the beauty industry.  Hydrochloric acid (muriatic acid), ammonium, hydrogen peroxide and liquid carbon dioxide could be effective and were certainly safer (if used correctly) than bi-chloride of mercury which definitely worked although the inherent difficulty was that pigment cells exist under the horny cells of the epidermis so results were usually temporary.  Many resorted to sometimes quite drastic skin-peeling and the most popular agent was for centuries lemon juice which bleaches the skin, inducing peeling although those wanting faster results would later use a hydrogen peroxide solution which was applied immediately after the skin had been scrubbed with a strong alkali soap and ammonium water.  If a patient demanded it, dermatologists would sometimes use undiluted carbolic acid to induce a severe inflammation and consequent peeling but there was reluctance in the profession because even when used with the appropriate skill, it could cause scaring and certainly couldn't be used on sensitive skin.  For that reason, many preferred the less effective hydrogen peroxide, salicylic acid or resorcinol; the early experiments with electrolysis proved unsatisfactory.  Mercury compounds such as ammoniated mercury and bi-chloride of mercury (corrosive sublimate) were the basis of many over-the-counter "anti-freckle" compounds, often combined with zinc salts or bismuth sub-nitrate and although marketed as "bleaching creams’", chemically they were really desquamating agents.  Remarkably, although restrictions began to be placed on the use of mercury in cosmetics as early as the 1940s, it wasn't until the late 1970s that in the West it was effectively banned for this purpose.  The preferred method of freckle removal is now laser treatment although the traditional view of dermatologists that freckles are a normal part of the human condition requiring no treatment is now more fashionable and there are many who fancy freckles.

Chocolate Freckles.

Freckles form on the skin because of exposure to sunlight, certain parts of the spectrum activating the melanocytes which stimulate an increase in melanin production, cause them to darken and appear more obvious.  Cases exist in the literature of people who spent their early life in extreme northern latitudes developing freckles only after moving south and thus greatly increasing their exposure to sunlight.  In some cases, these people have presented to physicians seeking treatment for a skin disorder which freckles are not.  Freckles are instead something of a by-product of the migration of early humans, as long as 1.8 million years ago, from Africa, north to the lands around the Mediterranean and later beyond.  It was natural selection which, well over 100,000 years ago, produced the gene variants associated with pigmentation, induced by the advantaged gained by a lighter skin when living in northern latitudes; one which can absorb enough ultra-violet (UV) light to permit the body to sustain a healthy production of vitamin D.

Thermal

Thermal (pronounced thur-muhl)

(1) Of, relating to, or caused by heat or temperature (also thermic); of, relating to, or of the nature of thermae.

(2) As (both noun and adjective) thermal blanket or thermal underwear (as a noun, always referred to in the plural (thermals) even if describing a single item), items designed to aid in or promote the retention of body heat.

(3) In meteorology, a column of rising air caused by local unequal heating by the sun of the land surface, especially such a current when not producing a cloud; widely used in aviation and of especial importance in gliding, a borrowing of the techniques used by birds. The air usually rises until it is in equilibrium with the surrounding atmosphere.

(4) In stonemasonry, a rough finish created with a blowtorch.

1756: From the French thermal (buffon), from the New Latin thermalis, from the Ancient Greek θέρμη (thérmē) (heat; feverish heat), from the primitive Indo-European gwher (to heat, warm).  The construct was therm + -al (from the Latin adjectival suffix -ālis, or the French, Middle French & Old French -el, -al; used mostly but not exclusively with word of Latin origin).  The sense of "having to do with heat" is first recorded 1837; the noun meaning "rising current of relatively warm air" was first noted in 1933 in the context of aviation.  Geothermal first used in 1875; hydrothermal in 1855, exothermal in 1874; athermanous in 1839, hyperthermia in 1878, isotherm in 1850, endothermic in 1869 (1947 as applied in biology) and thermometer as early as the 1597 although the most familiar (pre-digital) version with mercury encased in glass, was invented by Fahrenheit in 1714.  Thermal is adjective in the singular and a noun in the singular or plural, thermally is the adverb.  The most common derivations are the adjectives hyperthermal and the adverb hyperthermally but in engineering and science there’s also therm, therma, thermacogenesis, thermae, aerothermal, thermometric, thermometrical & thermaesthesia.  Thermal is a noun, verb & adjective; the noun plural is thermals.

Thermal Reactive Nail Polish

Thermal reactive nail polishes change color depending on both body and ambient temperature.  Nail polish is especially suitable for thermal reactivity because the extremities of the body (fingertips, toes, ears & nose) vary in temperature much more than parts closer to the core.  Usefully, they work with even the thickest base and top-coats which affords additional protection for the thermal-reactive chemicals, the color-changing properties affected not at all if multiple coats are applied.

The process is entirely heat-dependent and thus constantly variable.  In this example the reaction produces purple in reaction to cold and aqua to warmth; because the temperature of the nail greatly can vary between base and tip, the ombré effect (colors blending from one hue to another) will fluctuate.  The chemical reaction does rely on the top coat being fully dry and, depending on manufacturer, this can take up to an hour.  The special properties don't last forever but, if correctly sealed, stored in a dark place and not exposed to extremes of heat and cold, the liquid will for months continue to be reactive.

Chemically, the thermal reactivity works because the polish is infused with a leuco (“white” in Ancient Greek) dye, the word a little misleading in this context because leuco dyes have two forms: one clear, the other colored. The reversible transition between the two colors may be caused by heat (thermochromism), light (photochromism) or pH (halochromism) and in other (often industrial) applications, it’s possible irreversibly to change colors, usually from a redox reaction.

For thermal nail polish, the dye comes packaged in tiny spheres called microcapsules, each only 1-10 microns in diameter but containing three chemicals: (1) leuco dye which changes color reversibly, the color depending on the dye which, when combined with a proton or hydrogen ion, becomes colorless.  (2) A weak acid which acts as a catalyst, donating the hydrogen ion.  (3) A solvent which induces a color change at a desired temperature.  When cool, the solvent solidifies, the hydrogen remaining stuck to the acid and thus not interacting with the colored dye.  When hot, the solvent melts, the weak acid dissociates, the hydrogen ion binds to the dye, and the dye is colorless.  The temperature-shift range is about 5ºF (3ºC).

Those not content with the commercially available color combinations easily can brew their own thermal reactive polish.  Leuco dyes are available in many colors and come as a powder, slurry, epoxy, or water-based ink but only the powder is suitable and the transition range should hover 88ºF (31ºC) because nails are cooler than body temperature.  The choice of polish color dictates the result.  A white polish will produce a pastel result, a pale color will switch between the original and the combination of the leuco and the color so a mix of pink polish and a blue leuco dye yields a color shift from pink to purple.

To mix, place 1-2 small ball bearings in empty nail polish bottle and fill with polish to about half-way.  Add leuco dye to achieve desired color (about ⅛ teaspoon) and, if ambient temperature is high, chill the bottle to see result.  When mixing, cap bottle and gently roll it; do not shake because this will cause cavitation, the formation of air bubbles which impede the blending.  If the polish is too thick, add a few drops of nail polish thinner or clear top-coat but never acetone or other nail polisher remover because these chemicals ruin the mix.  Glitter or holo may be added according to taste.

Lindsay Lohan on skis in fuchsia, Falling for Christmas (Netflix (2022)), her thermal base layer unknown.

When skiing or mountain climbing, thermal underwear is usually the ideal choice for what is called the “thermal base layer”, a combination which consists usually of a top and a pair of leggings.  Outer layers of ski clothing perform better when a thermal base layer is worn because the moisture from the body rapidly is wicked away in a capillary action, permitting the breathable fabrics of the outer garments more efficiently to dissipate the moisture more efficiently.  It’s often thought the only purpose of thermal underwear is to increase body temperature but it’s the symbiosis between the thermal base layer and the outer coverings which regulate body temperature, maintaining comfort in both colder and warmer conditions.  By volume, most thermal underwear is made from Polyester (a type of plastic called polypropylene), often augmented with Lycra and all these garments are produced in a very tight weave which delivers good thermal qualities and what the manufacturers call a high “breathability factor”.

Also used is fine wool which, being a natural fibre, is preferred by many and it does posses the virtues of offering both comfort and efficient thermal qualities.  The choice between the types of construction is less about specific differences in thermal performance than how one’s skin reacts and sometimes this is something which can be judged only after prolonged exposure in a variety of temperatures.  All types are available in both short and long (sleeves & legs) versions and because the material is so thin, the longer cuts intrude not at all upon the fit of gloves and boots and the choice is again one of personal preference although, in extreme conditions, the full-versions should always at least be packed.

Succinite

Succinite (pronounced suhk-sinn-ite)

(1) In mineralogy, Baltic (or “true”) amber, so called because of the succinic acid in the fossil resin: often incorrectly applied to fossilized resin (amber) generally.

(2) In non-technical use, a garnet of amber, especially fossilized resin.

(3) In non technical use, an substance resembling amber.

(4) The color amber.

1816: A creation for scientific purposes in modern English with the sense of “amber-colored mineral”, from the Latin succinum (amber) a variant of sūcinum, the construct being succin +‎ -ite.  The root of succus was the primitive Indo-European sewg & sewk; cognate with sugō (juice; sap of a plant).  The Classical Latin is said to be from a Northern European language and was assimilated in form to the Latin succus & sucus (juice, sap) and related to succinic (in organic chemistry, of or pertaining to succinic acid), from the French succinique.  It was a synonym of ambra (amber).  The -ite suffix was from the French -ite, from the Old French, from the Latin -ītēs, from the Ancient Greek -ῑ́της (-ī́tēs).  It had a wide application including (1) the formation of nouns denoting the followers or adherents of a individual, doctrine or movement etc, (2) the formation of nouns denoting descendants of a certain historic (real or mythical) figure (widely used of biblical identities), (3) the formations of demonyms, (4) in geology the formation of nouns denoting rocks or minerals, (5) in archeology, the formation of nouns denoting fossil organisms, (6) in biology & pathology to form nouns denoting segments or components of the body or an organ of the body, (7) in industry & commerce to form nouns denoting the product of a specified process or manufactured product & (8) in chemistry to form names of certain chemical compounds (historically especially salts or esters of acids with names with the suffix -ous.

There’s also the rare adjective succiniferous used with the senses (1) yielding amber, (2) of or pertaining to amber or the plant yielding it & (3) in organic chemistry, of or pertaining to succinic acid.  Ferous (or gerous) are from the Latin ferre & gerere, both meaning “to bear” and surviving in English are over two-hundred words ending in ferous; most of them now obscure and used only in a technical context.  In an illustration of linguistic overlap, the Latin verb succinite was the second-person plural present active imperative of succinō, the construct being sub- (under; below) +‎ canō (sing).  It had the meanings (1) to sing to, to accompany in song & (2) to accord, in agreement with.  Succinite is a noun; the noun plural is succinites.

Succiniferous: Lindsay Lohan wearing Baltic Amber pendant.

The word succinite is sometimes used casually of amber, things which resemble amber or even shades of the color.  Geologists use the more with more precision and within the community there was a long dispute about succinite (Baltic amber), its botanical origin, and methods of distinguishing it from other fossil resins.  The questions were resolved by advances such as infrared spectrometry and speculation about a link with other acids are now held to be unsustainable, the consensus now that amber is coniferous in origin, not as had been suggested in the nineteenth century, from the tree Pinites succinifer.  It seems now clear that the extant Baltic amber came from several species of conifers of the family Sciadopityaceae.  Baltic amber is not a polymer but has a complex, cross-linked  macromolecular structure with the pores filled by components of the structure, an arrangement chemists call a supramolecule, something which both hardens the substance and increases density, accounting for its extraordinary longevity, ancient samples notable for their encapsulated, perfectly preserved plant and animal samples.

Amber alerts.

The term “Amber Alert” is a defined part of public information messaging and analogous with the red/amber/green lights used in traffic signals, amber meaning essentially “proceed with heightened caution and awareness”.  Noting the evidence provided in the well publicized defamation case (John C Depp II v Amber Laura Heard (CL-2019-2911; Fairfax County Circuit Court)), the meme-makers responded.

Most succiniferous: The Amber Room, Catherine Palace, St. Petersburg, 1917.  This is the only known color image of the room.

Last seen (in crates) in 1945, it was either destroyed in the last days of World War II (1939-1945) or dissembled and hidden somewhere or otherwise disposed of.  Between 1979-2003, with early funding from the Federal Republic of Germany (the FRG, the old West Germany), a replica was built and installed in the Catherine Palace.  The golden, jewel-encrusted creation, rendered by artisans and craftsmen from tons of amber, was a gift to Peter the Great (Peter I, 1672-1725; Tsar of Russia 1682-1725) in 1716, celebrating the conclusion of an alliance between Russia and Prussia.  Much admired during the centuries in which it endured wars, pandemics and revolutions, it was looted by the Nazis in the final months of the war, packed into crates which subsequently vanished.  Either they were lost or destroyed in the chaos or hidden away.

Originally installed in the Charlottenberg Palace of Friedrich I (1657–1713; King of Prussia 1701–1713), the Amber Room was a genuine multi-national venture, the design by Andreas Schlüter (1659–1714), a German sculptor in the baroque tradition, the bulk of the construction by the Danish craftsman Gottfried Wolfram (1646-1716), already famous for his skill in rendering amber.  It took over a decade to build and upon completion, Peter the Great expressed his wonderment and in 1716, Frederick William I (1688–1740; King of Prussia 1713-1740) presented it to the Tsar, part of his diplomatic effort to secure the Prussian-Russian alliance against Sweden.  Accordingly, along with a selection of paintings, the room was crated and shipped to Saint Petersburg where it remained until in 1755 it was moved to the Catherine Palace (Tsarskoye Selo (Tasar's Palace)) in Pushkin.  Now installed in a larger space, the Italian designer Francesco Bartolomeo Rastrelli (1700–1771) was engage to remodel the assembly to suit, addition amber panels shipped from Berlin.  Renovations and refinements continued to be undertaken during the eighteenth century and when complete, the room covered some 180 square feet (16.7 m³) and contained some six tons (6100 kg) of amber, semi-precious stones and gold leaf.  At the time, it was thought one of the wonders of the modern world.

In the Nazi mind, not only was the Amber Room of German origin but such treasures anyway belonged only in the Reich and it was added to the (long) list of artworks to be looted as part of Operation Barbarossa (the 1941 invasion of the Soviet Union).  As the Wehrmacht advanced on Pushkin, the Russian curators began to attempt to disassemble the panels but their fragility was such it was quickly realized any work done in haste would cause only destruction.  Accordingly, they had carpenters construct a frame over which was glued wallpaper, there not being time even to construct a false wall.  Not fooled, the Nazi looters removed the entire structure, shipping it to be installed in the Königsberg Castle Museum (now in the Russian exclave of Kaliningrad) on the Baltic coast.  However, the tide of the war turned and in 1943 the museum's director received from Berlin instructions to return the room to crates and this had be accomplished by August 1944 when allied bombing raids severely damaged the castle.  Quite what happened to the crates remains unknown.  It may be they were destroyed during the war or were in the hold of a ship sunk in the Baltic but the tales of them being hidden somewhere has never gone away and continues to tantalize, a solitary panel actually found in Bremen in 1997.  The replica room, dedicated in a ceremony in 2004 by Vladimir Putin (b 1952; president or prime minister of Russia since 1999) and Gerhard Schröder (b 1944, Chancellor of Germany 1998-2005) remains on public display at the Tasrskoye State Museum Reserve outside Saint Petersburg.