Quantum

Quantum (pronounced kwon-tuhm)

(1) A quantity or amount.

(2) A particular quantity or amount.

(3) A share or portion.

(4) A large quantity; something ordered, delivered or stored in bulk.

(5) In physics, the smallest quantity of some physical property, such as energy, that a system can possess according to the quantum theory; involving quanta, quantum mechanics or other aspects of quantum physics.

(6) A particle with such a unit of energy; the fundamental unit of a quantized physical magnitude, as angular momentum.

(7) Of change: (1) classically, sudden or discrete, without intermediate stages & (2) in modern adjectival use, something sudden and significant.

(8) In mathematics, a definite portion of a manifoldness, limited by a mark or by a boundary.

(9) In law, a brief document provided by the judge, elaborating on a sentencing decision (now most often used in the subcontinent); the total amount of something; the quantity.

(10) In computer operating systems, the amount of time allocated for a thread to perform its work in a multithreaded environment.

(11) In computer design, short for quantum computing.

(12) In medicine, the minimum dose of a pathogen required to cause an infection.

1610-1620: From the Late Latin quantum, noun use of the neuter form of the Classical Latin quantus (how much).

Quantum imported from Latin to physics directly by German theoretical physicist Max Planck (1858–1947) to describe the concept of the "minimum amount of a quantity which can exist".  Quantum theory is from 1912 and quantum mechanics from 1922, the latter much associated with German theoretical physicist Werner Heisenberg (1901-1976) who in 1927 deduced his "uncertainty principle" which declares an electron may have a determinate position, or a determinate velocity, but not both.  In physics, the term quantum jump (the abrupt transition from one stationary state to another) came into use in 1954 while quantum leap (sudden large advance) dates from 1963 and in figurative use (by non-physicists) describes some drastic change or radical advance in some aspect of something (and is thus often synonymous with that other favorite of post-modernists, the paradigm shift.  There are pedants (and one suspects few of them actually comprehend quantum theory) who insist “quantum leap” in the sense of “sudden & big is wrong but it’s just part of the evolution of English in its usual democratic way.  Quantum is a noun and adjective; the noun plural is quantums or quanta.

IBM quantum computer.

In an announcement little noted outside the nerd community, in late 2021 IBM introduced the Circuit Layer Operations per Second (CLOPS) performance standard for quantum computing.  As a measuring metric, CLOPS corresponds to the number of quantum circuits a quantum processing unit (QPU) can execute per unit of time, the innovation compared with previous standards such as FLOPS (Floating Point Operations per Second) and its variations (ranging from kiloFLOPS (KFlops:10³) to yottaFLOPS (YFlops: 10²⁴)), in that it expresses not only the actual speed at which the workload is processed and successfully completed but also adjusts to account for the latency of the interaction between the quantum and classical computing realms.

It must be noted that to date, the pure quantum computer has existed only in theory and that functions now executed in the quantum space involve an interaction, being mediated via a classical binary computer which translates workloads into a QPU-compatible format, retrieves the workload's results and presents them in an understandable form.  CLOPS thus accounts for not only the interval of time that the workload is actually being processed at the qubit (quantum bit) level, but also the time it takes for the system to translate and transfer information across both components.

Dating back decades, IBM has published many standards which the industry has adopted ranging from specifications for memory addressing to video displays (the famous CGA, EGA, VGA, XGA etc) and had for some time discussed the need for a harmonized standard for quantum computing.  Until CLOPS was announced, the measures had usually been expressed in terms of two of quantum’s three planes: (1) scale which pertains to the number of qubits present in any given system and (2) quality which refers to the proportion of qubits that can perform usable work expressed via quantum volume.  What CLOPS does is provide a formula to express a measure of (3) speed.

IBM has published CLOPS results for some of its quantum computing systems using machines constructed with between five and 64 qubits and it was interesting to note all had a similar quantum volume score, their actual speed (expressed in CLOPS) varied between 753 and 1419 layers per second; as IBM predicted, it was latency which accounted for the difference.  Noting that, IBM also published results from their Qiskit (Quantum Information Software Kit for Quantum Computation) project which focuses on reducing the latency in the quantum-classic computing translation layer seriously via closer physical proximity between the objects, some experiments reducing run-time cycles from 45 days to nine hours.  The company expects CLOPS to be the defined measure of quantum computing in its present form as FLOPs and its variations were to super-computing.

Photon

Photon (pronounced foh-ton)

The subatomic particle that carries the electromagnetic force and is the quantum of electromagnetic radiation; has a rest mass of zero, but has measurable momentum, exhibits deflection by a gravitational field, and can exert a force.  It has no electric charge, has an indefinitely long lifetime, and is its own antiparticle.  It is the quantum (a bundle of energy) in which light and other forms of electromagnetic radiation are emitted.

1916: A compound word phot(o)- +‎ -on.  Photo is from the Ancient Greek combining form φωτω- (phōtō-) from φῶς (phôs) (light).  The –on suffix is used often in science, in physics (eg electron) and in chemistry (eg carbon) and is from the Ancient Greek -ον (-on), used when ending neuter nouns and adjectives.  In physics, mathematics and biology, it forms nouns denoting subatomic particles (proton), quanta (photon), molecular units (codon), or substances (interferon).  In biology and genetics, it’s applied to form names of stuff considered basic or fundamental units such as codon.  In chemistry, it’s used to form names of noble gases and certain nonmetal elements such as boron or silicon.  Photon was coined in 1916 by US physicist Leonard Troland (1889-1932) as a unit of light hitting the retina but the word was little used until the 1920s when a number of scientific papers were published.  Although the findings of some of the early experiments were later disproved, the word was soon adopted by most physicists.  Photon is a noun and photonic an adjective; the noun plural is photons.  

The light quantum

The photon is also called the light quantum.  The Latin word quanta (how much; the singular form is quantum) was used in the nineteenth century to mean particles or as a measure of quantity, the latter meaning persisting in general use.  What light was actually made from was, until the early twentieth century, one of the fundamental arguments in physics; the dispute essentially whether light was a wave or a particle.  Albert Einstein (1879-1955) published his theory in a 1905 paper which described electromagnetic waves as “…spatially localized, discrete wave-packets” which he labeled das lichtquant (the light quantum).  Light has special characteristics: apart from being creation’s universal speed limit, photons have a unique property in that they are both a particle and a wave, almost certainly have no mass and carry no charge.

JPL (NASA's Jet Propulsion Laboratory) used the properties of the photon to illustrate the weird world of quantum theory.

Photons underlie Einstein’s theory of relativity.  Travelling at the speed of light (and light can be slowed-down or stopped), if a photon could visualize, the entire universe would appear as a two-dimensional timeless plane which is completely still.  However, a photon can’t visualize or even experience anything because, for a proton, time doesn't pass, physicists labeling such things null geodesics.  A photon moves from its start to its end: An interaction creates (or emits) it until another interaction destroys (or absorbs) it.  These two things, creation and destruction, are all that can happen to a photon and neither can be experienced because there’s no time; what photons do can be measured but the frame of reference is wholly external.  In an inertial reference frame, there are physical laws which don't depend on the motion of anything external to the system yet for a photon, the physical rules it obeys depend exclusively on everything which happens external to it.

Weirder still, because protons lack mass, a photon cannot visualize the rest of the universe because seeing requires interacting with other particles, antiparticles, or photons, and, once such an interaction occurs, that photon's journey is over, its destruction as instantaneous as its creation.  Thus the fundamental importance of time to the existence of three-dimensional space; were there no time, everything would happen at once.

Spook

Spook (pronounced spook)

(1) In informal use, a ghost; a specter; an apparition; hobgoblin.

(2) A person whose appearance or conduct is thought “ghost-like”.

(3) In philosophy, a metaphysical manifestation; an artificial distinction or construct.

(4) In slang, a ghostwriter (one who writes text (typically columns, autobiography, memoir) published under the name of another,

(5) In slang, an eccentric person (now rare).

(6) In disparaging and offensive slang, term of contempt used of people of color (historically African-Americans).

(7) In slang, a spy; one engaged in espionage.

(8) In slang, a psychiatrist (originally US but now more widespread under the influence of pop culture.

(9) In the slang of blackjack, a player who engages in “hole carding” by attempting to glimpse the dealer's hole card when the dealer checks under an ace or a 10 to see if a blackjack is present.

(10) In southern African slang any pale or colorless alcoholic spirit (often as “spook & diesel”).

(11) To haunt; inhabit or appear in or to as a ghost or spectre.

(12) To frighten; to scare (often as “spooked”).

(13) To become frightened or scared (often as “spooked”); applied sometimes to animals, especially thoroughbred horses.

1801: A coining of US English, from the Dutch spook (ghost), from the Middle Dutch spooc & spoocke (spook, ghost), from an uncertain Germanic source (the earliest known link being the Middle Low German spōk (ghost), others including the Middle Low German spôk & spûk (apparition, ghost), the Middle High German gespük (a haunting), the German Spuk (ghost, apparition, hobgoblin), the Danish spøg (joke) & spøge (to haunt), the Norwegian spjok (ghost, specter) and the Swedish spok (scarecrow) & spöke (ghost).  The noun spook in the sense of “spectre, apparition, ghost” seems first to have appeared in a comical dialect poem, credited to “an old Dutch man in Albany” and printed in Vermont and Boston newspapers which credited it to Springer's Weekly Oracle in New London, Connecticut.  The regional diversity in language was then greater and evolutions sometimes simultaneous and the word also appeared in US English around 1830 as spuke & shpook, at first in the German-settled regions of Pennsylvania, via Pennsylvania Dutch Gschpuck & Schpuck, from the German Spuk.  Spook & spooking are nouns & verbs, spooker & spookery are nouns, spooktacular is a noun & adjective, spooktacularly is an adverb, spooked is a verb & adjective, spookery is a noun, spooky, spookiest & spookish are adjectives; the noun plural is spooks.

Spooked: Lindsay Lohan in I Know Who Killed Me (2007).

A “spook show” (frightening display) was a term in use by 1880 and in the sense of a “popular exhibition of legerdemain, mentalism or staged necromancy” it was documented by 1910.  The spook house (abandoned house) was in use in the 1850s, the expression meaning “haunted house” emerging in the 1860s.  The meaning “superstition” had emerged by 1918, presumably an extension from the earlier sense of “a superstitious person”, documented around the turn of the century although it probably existed longer in oral use.  In the 1890s, “spookist” (described variously as “jocular” and “a less refined word” was used to refer to spiritualists and medium (and in those years there were a lot of them, their numbers spiking after World War I (1914-1918) when many wished to contact the dead.  Spooktacular (a pun on “spectacular” developed some time during World War II (1939- 1945).  The meaning “undercover agent” or “spy” dates from 1942 (inducing “spookhouse” (haunted house) to pick up the additional meaning “headquarters of an intelligence operation”, a place presided over by a “spookmaster” (“spymaster” the preferred modern term).  In the same era, in student slang a spook could be an unattractive girl or a quiet, diligent, introverted student (something like the modern “nerd” but without any sense of a focus of technology).

Senator Rebecca Ann Felton (1835–1930, left) and Senator Mitch McConnell (b 1942; US senator (Republican-Kentucky) since 1985; Senate Minority Leader since 2021).  The spooky resemblance between Senator Fulton (who in 1922 served for one day as a senator (Democratic-Georgia), appointed as a political manoeuvre) and Senator Mitch McConnell has led some to suggest he might be her reincarnated.  Some not so acquainted with history assumed the photograph of Senator Felton was Mitch McConnell in drag.

The sense of spook as “a black person” is listed by dictionaries of US slang as being documented by 1938 (the date of origin uncertain) and it seems to have begun in African-American (hep-cat) slang and it was not typically used with any sense of disparagement, nor was it thought in any way offensive word.   However, by 1945 it had picked up the derogatory racial sense of “black person”, defined specifically as “frightened negro” and it became a common slur in the post-war world, probably because that even by then the “N-word” was becoming less acceptable in polite society.  That was the “linguistic treadmill” in practice but spook had also deviated earlier: In 1939 it is attested as meaning “a white jazz musician” and is listed by some sources as a disparaging term for a white person by 1947.  Spook also developed a curious fork in military aviation although one probably unrelated to the informal pilot’s jargon of the 1930s, a “spook” a “novice pilot” of the type who “haunt the hangers”, hiring air-time and learning to fly for no obvious practical purpose other than the joy of flying.  During the early 1940s, the US Army Air Force (USAAF) began the recruitment of black athletes for training as pilots, conducted at the Tuskegee Institute in Alabama; the group (1940-1948) was known as the Tuskegee Airmen and during World War II (1939-1945) they gained a fine reputation when deployed as combat units.  However, they also suffered prejudice and when first posted to Europe were often called the “Spookwaffe” (a play on Luftwaffe, the name of the German air force) although as happened decades later with the by then infamous N-word, some black pilots “re-claimed” the name and used it as a self-referential term of pride.

Left to right: Spook, the Bacterian ambassador, Benzino Napaloni, Diggaditchie of Bacteria (a parody of Benito Mussolini), Adenoid Hynkel (Adolf Hitler) and Field Marshall Herring (Hermann Göring).  The satirical film The Great Dictator (1940) was very much a personal project, Charlie Chaplin (1889–1977) writing, producing & directing as well as staring as Adenoid Hynkel, Phooey of Tomainia.  The rather cadaverous looking Spook was the Bacterian ambassador.

Seventy years of spooks.

On 9 September 2019, the Royal Australian Mint released a 50 cent coin to commemorate the 70th anniversary of the Australian Security Intelligence Organisation (ASIO), the domestic spy agency (similiar in function to the UK's MI5 (Security Service)).  The issue was limited to 20,000 coins and each featured an encrypted code, similar in structure to those used by spooks during the Cold War.  At the time of the release, the Mint ran a competition inviting attempts to "solve the code", the prize the only proof commemorative coin in existence.  The competition was won by a fourteen year old who is apparently still at liberty, despite having proved him or herself a threat to national security.

Albert Einstein (1879-1955) gave the word a few memorable phrases but one of the most evocative is a calque of the German spukhafte Fernwirkung (rendered by Einstein as spukhafte Fernwirkungen (spooky actions at a distance) in a letter of 3 March 1947 to the physicist Max Born (1882–1970)).  Einstein used “spooky actions at a distance” to refer to one of the most challenging ideas from quantum mechanics: that two particles instantaneously may interact over a distance and that distance could be that between different sides of the universe (or if one can’t relate to the universe having “sides”, separated by trillions of miles.  Known as “quantum entanglement”, it differs radically from some of the other (more abstract) senses in which everything in the universe is happening “at the same time”.

This aspect of quantum mechanics has for a century-odd been one of the most contested but the 2022 Nobel Prize in Physics was awarded to three scientists who designed experiments which tested the theories, their results contradicting Einstein and discovering the seriously weird phenomenon of quantum teleportation.  Quantum entanglement is a process in which two or more quantum particles are in some way connected so any change in one causes a simultaneous change in the other, even if they are separated by vast distances.  Indeed those distances could stretch even to infinity.  Einstein was one of many physicists not convinced and he didn’t like the implications, calling the idea “spooky action at a distance” and preferred to think the particles contained certain hidden variables which had already predetermined their states.  This was neat and avoided the need for any teleportation.  However, what the 2022 Nobel Laureates found that the fabric of the universe should be visualized as a sea of wave-like particles that affect each other instantaneously, distance as conventionally measured being irrelevant.  What that seems to mean is that nothing has to travel between the two particles (the speed of light therefore not a limitation) because the two are in the same place and that place is the universe.  The English physicist Sir Arthur Eddington (1882–1944) was surely correct when he remarked “…not only is the universe queerer than we imagine, it is queerer than we can imagine.”

Floppy

Floppy (pronounced flop-ee)

(1) A tendency to flop.

(2) Limp, flexible, not hard, firm, or rigid; flexible; hanging loosely.

(3) In IT, a clipping of “floppy diskette”.

(4) In historic military slang (Apartheid-era South Africa & Rhodesia (now Zimbabwe), an insurgent in the Rhodesian Bush War (the “Second Chimurenga” (from the Shona chimurenga (revolution)) 1964-1979), the use a reference to the way they were (in sardonic military humor) said to “flop” when shot.

(5) In informal use, a publication with covers made with a paper stock little heavier and more rigid that that used for the pages; Used mostly for comic books.

(6) In slang, a habitué of a flop-house (a cheap hotel, often used as permanent or semi-permanent accommodation by the poor or itinerant who would go there to “flop down” for a night) (archaic).

(7) In slang, as “floppy cats”, the breeders’ informal term for the ragdoll breed of cat, so named for their propensity to “go limp” when picked up (apparently because of a genetic mutation).

1855-1860: The construct was flop + -y.  Flop dates from 1595–1605 and was a variant of the verb “flap” (with the implication of a duller, heavier sound).  Flop has over the centuries gained many uses in slang and idiomatic form but in this context it meant “loosely to swing; to flap about”.  The sense of “fall or drop heavily” was in use by the mid-1830s and it was used to mean “totally to fail” in 1919 in the wake of the end of World War I (1914-1918), the conflict which wrote finis to the dynastic rule of centuries also of the Romanovs in Russia, the Habsburgs in Austria-Hungary and the Ottomans in Constantinople although in the 1890s it was recorded as meaning “some degree of failure”.  The comparative is floppier, the superlative floppiest.  Floppy a noun & adjective, floppiness is a noun, flopped is a noun & verb, flopping is a verb, floppier& floppiest are adjectives and floppily is an adverb; the noun plural is floppies.  The adjective floppish is non-standard and used in the entertainment & publishing industries to refer to something which hasn’t exactly “flopped” (failed) but which had not fulfilled the commercial expectations.

Lindsay Lohan in "floppy-brim" hat, on-set during filming of Liz & Dick (2012).  In fashion, many "floppy-brim" hats actually have a stiff brim, formed in a permanently "floppy" shape.  The true "floppy hats" are those worn while playing sport or as beachwear etc.

The word is used as a modifier in pediatric medicine (floppy baby syndrome; floppy infant syndrome) and as “floppy-wristed” (synonymous with “limp-wristed”) was used as a gay slur.  “Flippy-floppy” was IT slang for “floppy diskette” and unrelated to the previous use of “flip-flop” or “flippy-floppy” which, dating from the 1880s was used to mean “a complete reversal of direction or change of position” and used in politics to suggest inconsistency.  In the febrile world of modern US politics, to be labelled a “flip-flopper” can be damaging because it carries with it the implication what one says can’t be relied upon and campaign “promises” might thus not be honored.  Whether that differs much from the politicians’ usual behaviour can be debated but still, few enjoy being accused of flip-floppery (definitely a non-standard noun).  The classic rejoinder to being called a flip-flopper is the quote: “When the facts change, I change my mind. What do you do, sir?”  That’s often attributed to the English economist and philosopher Lord Keynes (John Maynard Keynes, 1883-1946) but it was said originally by US economist Paul Samuelson (1915–2009) the 1970 Nobel laureate in Economics.  In the popular imagination Keynes is often the “go to” economist for quote attribution in the way William Shakespeare (1564–1616) is a “go to author” and Winston Churchill (1875-1965; UK prime-minister 1940-1945 & 1951-1955) a “go to politician”, both credited with thing they never said but might have said.  I phraseology, the quality of “Shakespearian” or “Churchillian” not exactly definable but certainly recognizable.  In the jargon of early twentieth century electronics, a “flip-flop” was a reference to switching circuits that alternate between two states.

Childless cat lady Taylor Swift with her “floppy cat”, Benjamin Button (as stole).  Time magazine cover, 25 December 2023, announcing Ms Swift as their 2023 Person of the Year.  "Floppy cat" is the the breeders' informal term for the ragdoll breed an allusion to their tendency to “go limp” when picked up, a behavior believed caused by a genetic mutation.

The other use of flop in IT is the initialism FLOP (floating point operations per second).  Floating-point (FB) arithmetic (FP) a way of handling big real numbers using an integer with a fixed precision, scaled by an integer exponent of a fixed base; FP doesn’t really make possible what would not in theory be achievable using real numbers but does make this faster and practical and the concept became familiar in the 1980s when Intel made available FPUs (floating point units, also known as math co-processors) which could supplement the CPUs (central processing units) of their x86 family.  The 8087 FPU worked with the 8086 CPU and others followed (80286/80287, 80386/80387, i486/i487 etc) until eventually the FPU for the Pentium range was integrated into the CPU, the early implementation something of a debacle still used as a case study in a number of fields departments including management and public relations.

FLOPs are an expression of specific performance and are used to measure those computations requiring floating-point calculations (typically in math-intensive work) and for purposes of “benchmarking” or determining “real-world” performance under those conditions, it’s a more informative number than the traditional rating of instructions per second (iSec).  The FLOPs became something of a cult in the 1990s when the supercomputers of the era first breached the trillion FLOP mark and as speeds rose, the appropriate terms were created:

kiloFLOPS: (kFLOPS, 10³)
megaflops: (MFLOPS, 10⁶)
gigaflops: GFLOPS, 10⁹)
teraflops: TFLOPS, 10¹²)
petaFLOPS: PFLOPS, 10¹⁵)
exaFLOPS: (EFLOPS, 10¹⁸)
zettaFLOPS: ZFLOPS, 10²¹)
yottaFLOPS: YFLOPS, 10²⁴)
ronnaFLOPS: RFLOPS, 10²⁷)
quettaFLOPS: QFLOPS, 10³⁰)

In the mysterious world of quantum computing, FLOPs are not directly applicable because the architecture and methods of operation differ fundamentally from those of classical computers.  Rather than FLOPs, the performance of quantum computers tends to be measured in qubits (quantum bits) and quantum gates (the operations that manipulate qubits).  The architectural difference is profound and explained with the concepts of superposition and entanglement:  Because a qubit simultaneously can represent both “0” & “1” (superposition) and these can be can be entangled (a relationship in which distance is, at least in theory, irrelevant), under such multi-string parallelism, performance cannot easily be reduced to simple arithmetic or floating-point operations which remain the domain of classical computers which operate using the binary distinction between “0” (off) and “1” (on).

Evolution of the floppy diskette: 8 inch (left), 5¼ inch (centre) & 3½ inch (right).  The track of the floppy for the past half-century has been emblematic of the IT industry in toto: smaller, higher capacity and cheaper.  Genuinely it was one of the design parameters for the 3½ inch design that it fit into a man's shirt pocket.

In IT, the term “floppy diskette” used the WORM (write once, read many, ie "read only" after being written) principle first appeared in 1971 (soon doubtless clipped to “floppy” although the first known use of this dates from 1974).  The first floppy diskettes were in an 8 inch (2023 mm) format which may sound profligate for something with a capacity of 80 kB (kilobyte) but the 10-20 MB (megabit) hard drives of the time were typically the same diameter as the aperture of domestic front-loading washing machine so genuinely they deserved the diminutive suffix (-ette, from the Middle English -ette, a borrowing from the Old French -ette, from the Latin -itta, the feminine form of -ittus.  It was used to form nouns meaning a smaller form of something).  They were an advance also in convenience because until they became available, the usual way to transfer files between devices was to hard-wire them together.  Introduced by IBM in 1971, the capacity was two years later raised to 256 kB and by 1977 to a heady 1.2 MB (megabyte) with the advent of a double-sided, double-density format.  However, even then it was obvious the future was physically smaller media and in 1978 the 5¼ inch (133 mm) floppy debuted, initially with a formatted capacity of 360 kB but by 1982 this too had be raised to 1.2 MB using the technological advance if a HD (high density) file system and it was the 5¼ floppy which would become the first widely adopted industry “standard” for both home and business use, creating the neologism “sneakernet”, the construct being sneaker + net(work), the image being of IT nerds in their jeans and sneakers walking between various (unconnected) computers and exchanging files via diskette.  Until well into the twenty-first century the practice was far from functionally extinct and it persists even today with the use of USB sticks.

Kim Jong-un (Kim III, b 1982; Supreme Leader of DPRK (North Korea) since 2011) with 3½ inch floppy diskette (believed to be a HD (1.44 MB)).

The meme-makers use the floppy because it has become a symbol of technological bankruptcy. In OS (operating system) GUIs (graphical user interface) however, it does endure as the "save" icon and all the evidence to date does suggest that symbolic objects like icons do tend to outlive their source, thus the ongoing use in IT of analogue, rotary dial phones in iconography and the sound of a camera's physical shutter in smart phones.  Decades from now, we may still see representations of floppy diskettes.

The last of the mainstream floppy diskettes was the 3½ inch (89 mm) unit, introduced in 1983 in double density form with a capacity of 720 KB (although in one of their quixotic moves IBM used a unique 360 kB version for their JX range aimed at the educational market) but the classic 3½ was the HD 1.44 MB unit, released in 1986.  That really was the end of the line for the format because although in 1987 a 2.88 MB version was made available, few computer manufacturers offered the gesture of adding support at the BIOS (basic input output system) so adoption was infinitesimal.  The 3½ inch diskette continued in wide use and there was even the DMF (Distribution Media Format) with a 1.7 MB capacity which attracted companies like Microsoft, not because it wanted more space but to attempt to counter software piracy; within hours of Microsoft Office appearing in shrink-wrap with, copying cracks appeared on the bulletin boards (where nerds did stuff before the www (worldwideweb).  It was clear the floppy diskette was heading for extinction although slighter larger versions with capacities as high as 750 MB did appear but, expensive and needing different drive hardware, they were only ever a niche product seen mostly inside corporations.  By the time the CD-ROM (Compact Disc-Read-only Memory) reached critical mass in the mid-late 1990s the once ubiquitous diskette began rapid to fade from use, the release in the next decade of the USB sticks (pen drives) a final nail in the coffin for most.

In the mid 1990s, installing OS/2 Warp 4.0 (Merlin) with the optional packs and a service pack could require a user to insert and swap up to 47 diskettes.  It could take hours, assuming one didn't suffer the dreaded "floppy failure".

That was something which pleased everyone except the floppy diskette manufacturers who had in the early 1990s experienced a remarkable boom in demand for their product when Microsoft Windows 3.1 (7 diskettes) and IBM’s OS/2 2.0 (21 diskettes) were released. Not only was the CD-ROM a cheaper solution than multiple diskettes (a remarkably labor-intensive business for software distributors) but it was also much more reliable, tales of an installation process failing on the “final diskette” legion and while some doubtlessly were apocryphal, "floppy failure" was far from unknown.  By the time OS/2 Warp 3.0 was released in 1994, it required a minimum of 23 floppy diskettes and version 4.0 shipped with a hefty 30 for a base installation.  Few mourned the floppy diskette and quickly learned to love the CD-ROM.

What lay inside a 3½ inch floppy diskette.

Unlike optical discs (CD-ROM, DVD (Digital Versatile Disc) & Blu-Ray) which were written and read with the light of a laser, floppy diskettes were read with magnetic heads.  Inside the vinyl sleeve was a woven liner impregnated with a lubricant, this to reduce friction on the spinning media and help keep the surfaces clean.

Curiously though, niches remained where the floppy lived on and it was only in 2019 the USAF (US Air Force) finally retired the use of floppy diskettes which since the 1970s had been the standard method for maintaining and distributing the data related to the nation’s nuclear weapons deployment.  The attractions of the system for the military were (1) it worked, (2) it was cheap and (3) it was impervious to outside tampering.  Global thermo-nuclear war being a serious business, the USAF wanted something secure and knew that once data was on a device in some way connected to the outside world there was no way it could be guaranteed to be secure from those with malign intent (ayatollahs, the Secret Society of the Les Clefs d'Or, the CCP (Chinese Communist Party), the Freemasons, those in the Kremlin or Pyongyang etc) whereas a diskette locked in briefcase or a safe was, paradoxically, the state of twenty-first century security, the same philosophy which has seen some diplomatic posts in certain countries revert to typewriters & carbon paper for the preparation of certain documents.  In 2019 however, the USAF announced that after much development, the floppies had been retired and replaced with what the Pentagon described as a “highly-secure solid-state digital storage solution which work with the Strategic Automated Command and Control System (SACCS).”

It can still be done: Although no longer included in PCs & laptops, USB floppy diskette drives remain available (although support for Windows 11 systems is said to be "inconsistent").  Even 5¼ inch units have been built.

It thus came as a surprise in 2024 to learn Japan, the nation which had invented motorcycles which didn’t leak oil (the British though they’d proved that couldn’t be done) and the QR (quick response) code, finally was abandoning the floppy diskette.  Remarkably, even in 2024, the government of Japan still routinely asked corporations and citizens to submit documents on floppies, over 1000 statutes and regulations mandating the format.  The official in charge of updating things (in 2021 he’d “declared war” on floppy diskettes) in July 2024 announced “We have won the war on floppy disks!” which must have be satisfying because he’d earlier been forced to admit defeat in his attempt to defenestrate the country’s facsimile (fax) machines, the “pushback” just too great to overcome.  The news created some interest on Japanese social media, one tweet on X (formerly known as Twitter) damning the modest but enduring floppy as a “symbol of an anachronistic administration”, presumably as much a jab at the “tired old men” of the ruling LDP (Liberal Democratic Party) as the devices.  There may however been an element of technological determinism in the reform because Sony, the last manufacturer of the floppy, ended production of them in 2011 so while many remain extant, the world’s supply is dwindling.  In some ways so modern and innovative, in other ways Japanese technology sometimes remains frozen, many businesses still demanding official documents to be endorsed using carved personal stamps called the印鑑 (ikan) or 判子 (hanko); despite the government's efforts to phase them out, their retirement is said to be proceeding at a “glacial pace”.  The other controversial aspect of the hanko is that the most prized are carved from ivory and it’s believed a significant part of the demand for black-market ivory comes from the hanko makers, most apparently passing through Hong Kong, for generations a home to “sanctions busters”.

Virtual

Virtual (pronounced vur-choo-uhl)

(1) Being as specified in power, force, or effect, though not actually or expressly such; having the essence or effect but not the appearance or form.

(2) In optics, of an image (such as one in a looking glass), formed by the apparent convergence of rays that are prolonged geometrically, but not actually (as opposed to a real image).

(3) Being a focus of a system forming such images.

(4) In mechanics, pertaining to a theoretical infinitesimal velocity in a mechanical system that does not violate the system's constraints (applied also to other physical quantities); resulting from such a velocity.

(5) In physics, pertaining to a theoretical quality of something which would produce an observable effect if counteracting factors such as friction are disregarded (used often of the behavior of water if a factor such as friction were to be disregarded.

(6) In physics, designating or relating to a particle exchanged between other particles that are interacting by a field of force (such as a “virtual photon” and used also in the context of an “exchange force”).

(7) In digital technology, real, but existing, seen, or happening online or on a digital screen, rather than in person or in the physical world (actually an adaptation of an earlier use referring to political representation).

(8) In particle physics, pertaining to particles in temporary existence due to the Heisenberg uncertainty principle.

(9) In quantum mechanics, of a quantum state: having an intermediate, short-lived, and unobservable nature.

(10) In computing (of data storage media, operating systems, etc) simulated or extended by software, sometimes temporarily, in such a way as to function and appear to the user as a physical entity.

(11) In computing, of a class member (in object-oriented programming), capable of being overridden with a different implementation in a subclass.

(12) Relating or belonging to virtual reality (once often used as “the virtual environment” and now sometimes clipped to “the virtual”) in which with the use of headsets or masks, experiences to some degree emulating perceptions of reality can be produced with users sometimes able to interact with and change the environment.

(13) Capable of producing an effect through inherent power or virtue (archaic and now rare, even as a poetic device).

(14) Virtuous (obsolete).

(15) In botany, (literally, also figuratively), of a plant or other thing: having strong healing powers; a plant with virtuous qualities (obsolete).

(16) Having efficacy or power due to some natural qualities; having the power of acting without the agency of some material or measurable thing; possessing invisible efficacy; producing, or able to produce, some result; effective, efficacious.

1350–1400: From the Middle English virtual & virtual (there were other spellings, many seemingly ad hoc, something far from unusual), from the Old French virtual & vertüelle (persisting in Modern French as virtuel), from their etymon Medieval Latin virtuālis, the construct being the Classical Latin virtū(s) (of or pertaining to potency or power; having power to produce an effect, potent; morally virtuous (and ultimately the source of the modern English “virtue” from the Latin virtūs (virtue)) + -ālis.  The Latin virtūs was from vir (adult male, man), ultimately from the primitive Indo-European wihrós (man) (the construct of which may have been weyh- (to chase, hunt, pursue) + -tūs (the suffix forming collective or abstract nouns)).  The –alis suffix was from the primitive Indo-European -li-, which later dissimilated into an early version of –āris and there may be some relationship with hel- (to grow); -ālis (neuter -āle) was the third-declension two-termination suffix and was suffixed to (1) nouns or numerals creating adjectives of relationship and (2) adjectives creating adjectives with an intensified meaning.  The suffix -ālis was added (usually, but not exclusively) to a noun or numeral to form an adjective of relationship to that noun. When suffixed to an existing adjective, the effect was to intensify the adjectival meaning, and often to narrow the semantic field.  If the root word ends in -l or -lis, -āris is generally used instead although because of parallel or subsequent evolutions, both have sometimes been applied (eg līneālis & līneāris).  The alternative spellings vertual, virtuall and vertuall are all obsolete.  Virtual is a noun & adjective, virtualism, virtualist, virtualism, virtualness, virtualization (also as virtualisation) & virtuality are nouns, virtualize (also as virtualise) is a verb and virtually is an adverb; the noun plural is virtuals.  The non virtualosity is non-standard.

The special use in physics (pertaining to a theoretical infinitesimal velocity in a mechanical system that does not violate the system’s constraints) came into English directly from the French.  The noun use is derived from the original adjective.  Virtual is commonly used in the sense of being synonymous with “de facto”, something which can now be misleading because “virtue” has become so associated with the modern use related to computing.  In the military matters it has been used as “a virtual victory” to refer to what would by conventional analysis be thought a defeat, the rationale being the political or economic costs imposed on the “winner” were such that the victory was effectively pyrrhic.  It was an alternative to the concept of “tactical defeat; strategic victory” which probably was a little too abstract for some.

"Virtual art galleries" range from portals which enable works to be viewed on any connected device to actual galleries where physical works are displayed on screens or in some 3D form, either as copies or with a real-time connection to the original.   

In computing, although “virtual reality” is the best known use, the word has for some time been used variously.  “Virtual memory” (which nerds insist should be called “virtual addressing” is a software implementation which enables an application to use more physical memory than actually exists.  The idea dates from the days of the early mainframes when the distinction between memory and storage space often wasn’t as explicit as it would later become and it became popular in smaller systems (most obviously PCs) where at a time when the unit cost of RAM (random access memory) hardware was significantly higher than the default storage media of the HDD (hard disk drive).  Behaving as static electricity does, RAM was many orders of magnitude faster than the I/O (input/output) possible on hard disks but allocating a portion of free disk space to emulate RAM (hence the idea “virtual memory”) did make possible many things which would not run were a system able to work only with the installed physical RAM and rapidly it became a mainstream technique.

There’s also the VPN (virtual private network), a technology which creates a secure and encrypted connection over a public network (typically the Internet) and use is common to provide remote access to a private network or to establish a secure tunnel between two networks using the internet for transport.  The advantage of VPNs is they should ensure data integrity and confidentiality, the two (or multi) node authentication requirement making security breaches not impossible but less likely.  Widely used by corporations, VPNs are best known as the way traditionally used to evade surveillance and censorship in certain jurisdictions as diverse as the PRC (People’s Republic of China), the Islamic Republic of Iran and the UK although this is something of an arms race, the authorities with varying degrees of enthusiasm working out way to defeat the work-arounds.  VPNs often use an IP tunnel which is a related concepts but the IP tunnel is a technique used to encapsulate one type of network packet within another type of network packet to transport it over a network that wouldn't normally support the type of packet being transported.  IP tunnels are particularly useful in connecting networks using different protocols and (despite the name), the utility lies in them being able to transport just about any type of network traffic (not just IP).  A modular technology, not all IP tunnels natively provide authentication & encryption but most support “bolt-ons” which can add either or both.  So, while all VPNs use some form of tunnelling (however abstracted), not all tunnels are VPNs.

Microsoft really wanted you to keep their Java Virtual Machine.

Then there are “virtual machines”.  In personal computing, the machine came quickly to be thought of as a box to which a monitor and keyboard was attached and originally it did one thing at a time; it might be able to do many things but not simultaneously.  That situation didn’t long last but the idea of the connection between one function and one machine was carried over to the notion of the “virtual machine” which was software existing on one machine but behaving functionally like another.  This could include even a full-blown installation of the operating systems of several servers running on specialized software (sometimes in conjunction with hardware components) on a singles server.  What made this approach practical was that it is not unusual for a server to be under-utilized for most of its life (critically components often recording 2-3% utilization for extended periods, thus the attraction of using one physical server rather than several.  Obviously, the economic case was also compelling, the cost savings of having one server rather than a number multiplied by reductions in electricity use, cooling needs, insurance premiums and the rent of space.  There was also trickery, Microsoft’s JVM (Java Virtual Machine) an attempt to avoid having to pay licensing fees to Sun Microsystems (later absorbed by Oracle) for the use of a Java implementation.  The users mostly indifferent but while the hardware was fooled, the judges were not and the JVM was eventually declared an outlaw.

Operating a computer remotely (there are few ways to do this) rather than physically being present is sometimes called “virtual” although “remote” seems to have been become more fashionable (the form “telecommuting” used as early as 1968 is as archaic as the copper-pair analogue telephone lines over which it was implemented although “telemedicine” seems to have survived, possibly because in many places voice using an actual telephone remains a part).  In modern use (and the idea of virtual as “not physically existing but made to appear by software” was used as early as 1959), there are all sorts of “virtuals” (virtual personal trainers, virtual assistants etc), the idea in each case is that the functionality offered by the “real version” of whatever is, in whole or in part, emulated but the “virtual version”, the latter at one time also referred to as a “cyberreal”, another word from the industry which never came into vogue.  “Virtual keyboards” are probably the most common virtual device used around the world, now the smartphone standard, the demise of the earlier physical devices apparently regretted only by those with warm memories of their Blackberries.  Virtual keyboards do appear elsewhere and they work, although obviously offer nothing like the tactile pleasure of an IBM Model M (available from ClickyKeyboards.com).  The idea of “a virtual presence” is probably thought something very modern and associated with the arrival of computing but it has history.  In 1766, in the midst of the fractious arguments about the UK’s reaction to the increasing objections heard from the American colonies about “taxation without representation” and related matters (such as the soon to be infamous Stamp Act), William Pitt (1708-1778 (Pitt the Elder and later Lord Chatham); UK prime-minister 1766-1768) delivered a speech in the House of Commons.  Aware his country’s government was conducting a policy as inept as that the US would 200 years on enact in Indochina, his words were prescient but ignored.  Included was his assertion the idea of “…virtual representation of America in this house is the most contemptible idea that ever entered into the head of man and it does not deserve serious refutation.”  However, refute quite seriously just about everything his government was doing he did.  Pitt’s use of the word in this adjectival sense was no outlier, the meaning “being something in essence or effect, though not actually or in fact” dating from the mid-fifteenth century, an evolution of the sense of a few decades earlier when it was used to mean “capable of producing a certain effect”.  The adverb virtually was also an early fifteenth century form in the sense of “as far as essential qualities or facts are concerned while the meaning “in effect, as good as” emerged by the early seventeenth.

Lindsay Lohan's 2021 predictions of the US$ value of Bitcoin (BTC) & Ethereum (ETH).  By April 2024 the trend was still upward so the US$100,000 BTC may happen.  

In general use, the terms “cybercurrency”, “cryptocurrency” & “virtual currency” tend to be used interchangeably and probably that has no practical consequences, all describing electronic (digital) “currencies” which typically are decentralized, the main point of differentiation being that cryptocurrencies claim to be based on cryptographic principles and usually limited in the volume of their issue (although the decimal point makes this later point of little practical significance)  Whether they should be regarded as currencies is a sterile argument because simultaneously they are more and less, being essentially a form of gambling but for certain transactions (such as illicit drugs traded on various platforms), they are the preferred currency and in many jurisdictions they remain fully convertible and it’s telling the values are expressed almost always in US$, “cross-rates” (ie against other cryptocurrencies) rarely quoted.  However, to be pedantic, a “virtual currency” is really any not issued by a central government or authority (in the last one or two centuries-odd usually a national or central bank) and they can include in-game currencies, reward points and, of course, crybercurrencies.  The distinguishing feature of a cryptocurrency is the cryptotography.

Although the term is not widely used, in Christianity, "virtuality" was the view that contrary to the Roman Catholic doctrine of transubstantiation, the bread & wine central to Holy Communion do not literally transform into flesh and blood but are the medium or mechanism through which the spiritual or immaterial essence of the flesh and blood of Jesus Christ are received.  Within the Church, those who espoused or adhered to the heresy of virtuality were condemned as "virtualists.  In philosophy, the concept of virtuality probably sounds something simple to students but of course academic philosophy has a “marginal propensity to confuse”, the important distinction being “virtual” is not opposed to “real” but instead to “actual”, “real” being opposed to “possible”.