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Many people have made use of, or invented,
units of measurement A unit of measurement, or unit of measure, is a definite magnitude (mathematics), magnitude of a quantity, defined and adopted by convention or by law, that is used as a standard for measurement of the same kind of quantity. Any other qua ...
intended primarily for their
humor Humour ( Commonwealth English) or humor (American English) is the tendency of experiences to provoke laughter and provide amusement. The term derives from the humoral medicine of the ancient Greeks, which taught that the balance of fluids i ...
value. This is a list of such units invented by sources that are notable for reasons other than having made the unit itself, and that are widely known in the
Anglophone The English-speaking world comprises the 88 countries and territories in which English is an official, administrative, or cultural language. In the early 2000s, between one and two billion people spoke English, making it the largest language ...
world for their humor value.


Systems


FFF units

Most countries use the International System of Units ( SI). In contrast, the
furlong A furlong is a measure of distance in imperial units and United States customary units equal to one-eighth of a mile, equivalent to any of 660 foot (unit), feet, 220 yards, 40 rod (unit), rods, 10 chain (unit), chains, or a ...
/ firkin/
fortnight A fortnight is a unit of time equal to 14 days (two weeks). The word derives from the Old English term , meaning "" (or "fourteen days", since the Anglo-Saxons counted by nights). Astronomy and tides In astronomy, a ''lunar fortnight'' is hal ...
system of units of measurement draws attention by being extremely old fashioned and off-beat at the same time. One furlong per fortnight is very nearly 1 centimetre per minute (to within 1 part in 400). Besides having the meaning of "any obscure unit", furlongs per fortnight have also served frequently in the classroom as an example on how to reduce a unit's fraction. The
speed of light The speed of light in vacuum, commonly denoted , is a universal physical constant exactly equal to ). It is exact because, by international agreement, a metre is defined as the length of the path travelled by light in vacuum during a time i ...
may be expressed as being roughly 1.8 terafurlongs per fortnight (or megafurlongs per microfortnight).


Great Underground Empire (''Zork'')

In the ''
Zork ''Zork'' is a text adventure game first released in 1977 by developers Tim Anderson (programmer), Tim Anderson, Marc Blank, Bruce Daniels, and Dave Lebling for the PDP-10 mainframe computer. The original developers and others, as the company ...
'' series of games, the Great Underground Empire has its own system of measurements, the most frequently referenced of which is the bloit. Defined as the distance the king's favorite pet can run in one hour (spoofing a popular legend about the history of the
foot The foot (: feet) is an anatomical structure found in many vertebrates. It is the terminal portion of a limb which bears weight and allows locomotion. In many animals with feet, the foot is an organ at the terminal part of the leg made up o ...
), the length of the bloit varies dramatically, but the one canonical conversion to real-world units puts it at approximately two-thirds of a
mile The mile, sometimes the international mile or statute mile to distinguish it from other miles, is a imperial unit, British imperial unit and United States customary unit of length; both are based on the older English unit of Unit of length, le ...
(1  km). Liquid volume is measured in gloops, and temperature in degrees Q (57 Â°Q is said to be the
freezing point The melting point (or, rarely, liquefaction point) of a substance is the temperature at which it changes state of matter, state from solid to liquid. At the melting point the solid and liquid phase (matter), phase exist in Thermodynamic equilib ...
of water).


Potrzebie

In issue 33, '' Mad'' published a partial table of the "
Potrzebie Potrzebie (; , the dative/locative case form of the noun potrzeba, "need") is a Polish word popularized by its non sequitur use as a running gag in the early issues of '' Mad'' not long after the comic book began in 1952. Origin ''Mad'' edito ...
System of Weights and Measures" developed by 19-year-old Donald E. Knuth, later a famed
computer scientist A computer scientist is a scientist who specializes in the academic study of computer science. Computer scientists typically work on the theoretical side of computation. Although computer scientists can also focus their work and research on ...
. According to Knuth, the basis of this new revolutionary system is the potrzebie, which equals the thickness of ''Mad'' issue 26, or  mm. Volume was measured in ngogn (equal to 1000 cubic potrzebies), mass in
blintz A cheese blintzes or blintz (; ) is a rolled filled pancake in Ashkenazi Jewish cuisine, in essence a wrap based on a '' crepe'' or Russian ''blini''. The corresponding Russian dish is called '' blinchiki'', literally "little ''blini''". Histor ...
(equal to the mass of 1 ngogn of
halva Halva (also halvah, halwa, halua, and other spellings; ) is a type of confectionery that is widely spread throughout the Middle East and North Africa, Eastern Europe and the Balkans, Central Asia, and South Asia. The name is used for a broad va ...
, which is "a form of pie
ith The Ith () is a ridge in Germany's Central Uplands which is up to 439 m high. It lies about 40 km southwest of Hanover and, at 22 kilometers, is the longest line of crags in North Germany. Geography Location The Ith is i ...
a
specific gravity Relative density, also called specific gravity, is a dimensionless quantity defined as the ratio of the density (mass of a unit volume) of a substance to the density of a given reference material. Specific gravity for solids and liquids is nea ...
of 3.1416 and a specific heat of .31416"), and time in seven named units (decimal powers of the average earth rotation, equal to 1 "
clarke Clarke is a surname which means "clerk". The surname is of English and Irish origin and comes from the Latin . Variants include Clerk and Clark. Clarke is also uncommonly chosen as a given name. Irish surname origin Clarke is a common surname ...
"). The system also features such units as '' whatmeworry'' (power), ''
cowznofski Potrzebie (; , the dative/locative case form of the noun potrzeba, "need") is a Polish word popularized by its non sequitur use as a running gag in the early issues of '' Mad'' not long after the comic book began in 1952. Origin ''Mad'' edito ...
'' (time), ''vreeble'' (heat energy), ''hoo'', and ''hah'' (work). According to the "Date" system in Knuth's article, which substitutes a 10-clarke "
mingo The Mingo people are an Iroquoian group of Native Americans, primarily Seneca and Cayuga, who migrated west from New York to the Ohio Country in the mid-18th century, and their descendants. Some Susquehannock survivors also joined them, a ...
" for a month and a 100-clarke "cowznofski", for a year, the date of October 29, 2007 is rendered as "Cal 7, 201 C. M." (for Cowznofsko Madi, or "in the Cowznofski of our MAD"). The dates are calculated from October 1, 1952, the date MAD was first published. Dates before this point are referred to (perhaps tongue-in-cheek) as "B.M." ("Before MAD.") The ten "Mingoes" are: Tales (Tal.) Calculated (Cal.) To (To) Drive (Dri.) You (You) Humor (Hum.) In (In) A (A) Jugular (Jug.) Vein (Vei.)


Quantity


Sagan

As a humorous tribute to
Carl Sagan Carl Edward Sagan (; ; November 9, 1934December 20, 1996) was an American astronomer, planetary scientist and science communicator. His best known scientific contribution is his research on the possibility of extraterrestrial life, including e ...
and his association with the catchphrase "billions and billions", a ''sagan'' has been defined as a large
quantity Quantity or amount is a property that can exist as a multitude or magnitude, which illustrate discontinuity and continuity. Quantities can be compared in terms of "more", "less", or "equal", or by assigning a numerical value multiple of a u ...
– technically at least four billion (two billion plus two billion) – of anything.


Length


Attoparsec

Parsec The parsec (symbol: pc) is a unit of length used to measure the large distances to astronomical objects outside the Solar System, approximately equal to or (AU), i.e. . The parsec unit is obtained by the use of parallax and trigonometry, and ...
s are used in
astronomy Astronomy is a natural science that studies celestial objects and the phenomena that occur in the cosmos. It uses mathematics, physics, and chemistry in order to explain their origin and their overall evolution. Objects of interest includ ...
to measure interstellar distances. A parsec is approximately 3.26
light-year A light-year, alternatively spelled light year (ly or lyr), is a unit of length used to express astronomical distances and is equal to exactly , which is approximately 9.46 trillion km or 5.88 trillion mi. As defined by the International Astr ...
s or about 3.086×1016 m (1.917×1013  mi). Combining it with the "
atto- A metric prefix is a unit prefix that precedes a basic unit of measure to indicate a multiple or submultiple of the unit. All metric prefixes used today are decadic. Each prefix has a unique symbol that is prepended to any unit symbol. The pre ...
" prefix (×10−18) yields attoparsec (apc), a conveniently human-scaled unit of about that is used only humorously.


Beard-second

The beard-second is a unit of
length Length is a measure of distance. In the International System of Quantities, length is a quantity with Dimension (physical quantity), dimension distance. In most systems of measurement a Base unit (measurement), base unit for length is chosen, ...
inspired by the
light-year A light-year, alternatively spelled light year (ly or lyr), is a unit of length used to express astronomical distances and is equal to exactly , which is approximately 9.46 trillion km or 5.88 trillion mi. As defined by the International Astr ...
, but applicable to extremely short distances such as those in
integrated circuit An integrated circuit (IC), also known as a microchip or simply chip, is a set of electronic circuits, consisting of various electronic components (such as transistors, resistors, and capacitors) and their interconnections. These components a ...
s. It is the length an average
beard A beard is the hair that grows on the jaw, chin, upper lip, lower lip, cheeks, and neck of humans and some non-human animals. In humans, beards are most commonly seen on pubescent or adult males, though women have been observed with beards ...
grows in one
second The second (symbol: s) is a unit of time derived from the division of the day first into 24 hours, then to 60 minutes, and finally to 60 seconds each (24 × 60 × 60 = 86400). The current and formal definition in the International System of U ...
. Kemp Bennett Kolb defines the distance as exactly 100 
angstrom The angstrom (; ) is a unit of length equal to m; that is, one ten-billionth of a metre, a hundred-millionth of a centimetre, 0.1 nanometre, or 100 picometres. The unit is named after the Swedish physicist Anders Jonas Ångström (1814–18 ...
s (10 
nanometre 330px, Different lengths as in respect to the Molecule">molecular scale. The nanometre (international spelling as used by the International Bureau of Weights and Measures; SI symbol: nm), or nanometer (American spelling), is a unit of length ...
s), as does Nordling and Österman's ''Physics Handbook''.
Google Calculator Google Search (also known simply as Google or Google.com) is a search engine operated by Google. It allows users to search for information on the World Wide Web, Web by entering keywords or phrases. Google Search uses algorithms to analyze an ...
uses 5 nm.


Bee's dick

An Australian term for a very small distance, as in "he missed crashing into the truck by a bee's dick". It is derived from the presumed small size of a male bee's penis.


Jimmy Griffin Snow Index

Television station
WKBW-TV WKBW-TV (channel 7) is a television station in Buffalo, New York, United States, affiliated with ABC. Owned by the E. W. Scripps Company, the station maintains studios at 7 Broadcast Plaza in downtown Buffalo and a transmitter on Center Stree ...
in
Buffalo, New York Buffalo is a Administrative divisions of New York (state), city in the U.S. state of New York (state), New York and county seat of Erie County, New York, Erie County. It lies in Western New York at the eastern end of Lake Erie, at the head of ...
developed the "Jimmy Griffin Snow Index" to measure the potential severity of a snowstorm. It is named after former Buffalo mayor James D. Griffin, who in 1985 earned the nickname "Six Pack Jimmy" after suggesting residents grab a six-pack of Genesee beer to wait out an upcoming snowstorm. The index is measured in cans of beer, with roughly one can for every of expected snowfall (the index is not perfectly linear at its lower levels as originally introduced); thus, Griffin's six-pack would be recommended for a storm bringing two feet of snow.


Mickey

One mickey is the smallest resolvable unit of distance by a given
computer mouse A computer mouse (plural mice; also mouses) is a hand-held pointing device that detects Plane (mathematics), two-dimensional motion relative to a surface. This motion is typically translated into the motion of the Cursor (user interface)#Po ...
pointing device. It is named after Walt Disney's
Mickey Mouse Mickey Mouse is an American cartoon character co-created in 1928 by Walt Disney and Ub Iwerks. The longtime icon and mascot of the Walt Disney Company, Mickey is an anthropomorphic mouse who typically wears red shorts, large shoes, and white ...
cartoon character. Mouse motion is reported in horizontal and vertical mickeys. Device sensitivity is usually specified in mickeys per inch. Typical resolution is 500 mickeys per inch (16 mickeys per mm), but resolutions up to 16,000 mickeys per inch (600 mickeys per mm) are available.


Muggeseggele

A
Muggeseggele ''Muggeseggele'', or ''Muckenseckel'', is a humorous Alemannic German idiom used in Swabia to designate a nonspecific very small length or amount of something; it refers to a housefly's scrotum. It has been called the smallest Swabian unit of m ...
is a humorous
Alemannic German Alemannic, or rarely Alemannish (''Alemannisch'', ), is a group of High German dialects. The name derives from the ancient Germanic tribal confederation known as the Alemanni ("all men"). Distribution Alemannic dialects are spoken by approxi ...
idiom used in
Swabia Swabia ; , colloquially ''Schwabenland'' or ''Ländle''; archaic English also Suabia or Svebia is a cultural, historic and linguistic region in southwestern Germany. The name is ultimately derived from the medieval Duchy of Swabia, one of ...
to designate a nonspecific very small length or amount of something; it refers to a
housefly The housefly (''Musca domestica'') is a fly of the suborder Cyclorrhapha. It possibly originated in the Middle East, and Cosmopolitan distribution, spread around the world as a commensal of humans. Adults are gray to black, with four dark, lo ...
's
scrotum In most terrestrial mammals, the scrotum (: scrotums or scrota; possibly from Latin ''scortum'', meaning "hide" or "skin") or scrotal sac is a part of the external male genitalia located at the base of the penis. It consists of a sac of skin ...
.


Sheppey

A measure of distance equal to about , defined as the closest distance at which
sheep Sheep (: sheep) or domestic sheep (''Ovis aries'') are a domesticated, ruminant mammal typically kept as livestock. Although the term ''sheep'' can apply to other species in the genus '' Ovis'', in everyday usage it almost always refers to d ...
remain picturesque. The Sheppey is the creation of
Douglas Adams Douglas Noel Adams (11 March 1952 – 11 May 2001) was an English author, humorist, and screenwriter, best known as the creator of ''The Hitchhiker's Guide to the Galaxy''. Originally a 1978 BBC radio comedy, ''The Hitchhiker's Guide to the ...
and John Lloyd, included in ''
The Meaning of Liff ''The Meaning of Liff'' is a humorous dictionary of toponymy and etymology, written by Douglas Adams and John Lloyd, published in the United Kingdom in 1983 () and the United States in 1984 (). Content The book is a "dictionary of things ...
'', their dictionary of putative meanings for words that are actually just place names. It is named after the
Isle of Sheppey The Isle of Sheppey is an island off the northern coast of Kent, England, neighbouring the Thames Estuary, centred from central London. It has an area of . The island forms part of the districts of England, local government district of Borough ...
in the UK.


Smoot

The Smoot is a unit of length, defined as the height in 1958 of Oliver R. Smoot, who later became the chairman of the
American National Standards Institute The American National Standards Institute (ANSI ) is a private nonprofit organization that oversees the development of voluntary consensus standards for products, services, processes, systems, and personnel in the United States. The organiz ...
(
ANSI The American National Standards Institute (ANSI ) is a private nonprofit organization that oversees the development of voluntary consensus standards for products, services, processes, systems, and personnel in the United States. The organiz ...
), and then the president of the
International Organization for Standardization The International Organization for Standardization (ISO ; ; ) is an independent, non-governmental, international standard development organization composed of representatives from the national standards organizations of member countries. M ...
(
ISO The International Organization for Standardization (ISO ; ; ) is an independent, non-governmental, international standard development organization composed of representatives from the national standards organizations of member countries. Me ...
). The unit is used to measure the length of the
Harvard Bridge The Harvard Bridge (also known locally as the MIT Bridge, the Massachusetts Avenue Bridge, and the "Mass. Ave." Bridge) is a steel haunched girder bridge carrying Massachusetts Avenue ( Route 2A) over the Charles River and connecting Back Bay ...
. Canonically, and originally, in 1958 when Smoot was a
Lambda Chi Alpha Lambda Chi Alpha (), commonly referred to as Lambda Chi, is a fraternities and sororities, collegiate fraternity in North America. With over 300,000 initiates as of 2024, it is the third-largest social fraternity in the world by number of initia ...
pledge at
MIT The Massachusetts Institute of Technology (MIT) is a private research university in Cambridge, Massachusetts, United States. Established in 1861, MIT has played a significant role in the development of many areas of modern technology and sc ...
(class of 1962), the bridge was measured to be 364.4 Smoots, plus or minus one ear, using Mr. Smoot himself as a
ruler A ruler, sometimes called a rule, scale, line gauge, or metre/meter stick, is an instrument used to make length measurements, whereby a length is read from a series of markings called "rules" along an edge of the device. Usually, the instr ...
. At the time, Smoot was 5
feet The foot (: feet) is an anatomical structure found in many vertebrates. It is the terminal portion of a limb which bears weight and allows locomotion. In many animals with feet, the foot is an organ at the terminal part of the leg made up of ...
, 7
inch The inch (symbol: in or prime (symbol), ) is a Units of measurement, unit of length in the imperial units, British Imperial and the United States customary units, United States customary System of measurement, systems of measurement. It is eq ...
es, or 170 cm, tall.
Google Earth Google Earth is a web mapping, web and computer program created by Google that renders a 3D computer graphics, 3D representation of Earth based primarily on satellite imagery. The program maps the Earth by superimposition, superimposing satelli ...
and
Google Calculator Google Search (also known simply as Google or Google.com) is a search engine operated by Google. It allows users to search for information on the World Wide Web, Web by entering keywords or phrases. Google Search uses algorithms to analyze an ...
include the smoot as a unit of measurement. The Cambridge (Massachusetts) police department adopted the convention of using Smoots to measure the locations of accidents and incidents on the bridge. When the original markings were removed or covered over during bridge maintenance, the police had to request that someone reapply the Smoot scale markings. During a major bridge rebuild, the concrete sidewalk was permanently divided into segments one Smoot in length, as opposed to the regular division of six feet.


Wiffle

A wiffle, also referred to as a WAM for Wiffle (ball) assisted measurement, is equal to a sphere 89 millimetres (3.5 inches) in diameter – the size of a
Wiffle ball Wiffle ball is a scaled back variation of baseball that was developed in 1953 in Fairfield, Connecticut. Originally, it was intended to be played in confined space or otherwise small area, but became a popular outdoor activity. The sport is pl ...
, a perforated, light-weight plastic ball frequently used by
marine biologist Marine biology is the scientific study of the biology of marine life, organisms that inhabit the sea. Given that in biology many phyla, families and genera have some species that live in the sea and others that live on land, marine biology clas ...
s as a size reference in photos to measure
coral Corals are colonial marine invertebrates within the subphylum Anthozoa of the phylum Cnidaria. They typically form compact Colony (biology), colonies of many identical individual polyp (zoology), polyps. Coral species include the important Coral ...
s and other objects. The spherical shape makes it omnidirectional and perfect for taking a speedy measurement, and the open design also allows it to avoid being crushed by water pressure. Wiffle balls are a much cheaper alternative to using two reference lasers, which often pass straight through gaps in thin corals. A scientist on the research vessel is credited with pioneering the technique.


Area


Barn, outhouse, shed

A
barn A barn is an agricultural building usually on farms and used for various purposes. In North America, a barn refers to structures that house livestock, including cattle and horses, as well as equipment and fodder, and often grain.Allen G ...
is a serious
metric unit The metric system is a system of measurement that standardizes a set of base units and a nomenclature for describing relatively large and small quantities via decimal-based multiplicative unit prefixes. Though the rules governing the metric ...
of area used by nuclear physicists to quantify the scattering or absorption cross-section of very small particles, such as atomic nuclei. One barn is equal to . The name derives from the folk expressions "As big as a barn," and "Couldn't hit the broad side of a barn", used by
particle accelerator A particle accelerator is a machine that uses electromagnetic fields to propel electric charge, charged particles to very high speeds and energies to contain them in well-defined particle beam, beams. Small accelerators are used for fundamental ...
physicists to refer to the probability of achieving a collision between particles. For nuclear purposes, is actually rather large. The outhouse () and shed () are derived by analogy.


Nanoacre

The nanoacre is a unit of real estate on a very-large-scale integration (VLSI)
chip Chip may refer to: Food * Chip (snack), thinly sliced and deep-fried gastro item ** Potato chips (US) or crisp (UK) * Chips (fried potato strips) (UK) or french fries (US) (common as a takeout side) * Game chips, thin chip/French fries * Choco ...
equal to or the area of a square of side length . VLSI nanoacres have similar total costs to
acre The acre ( ) is a Unit of measurement, unit of land area used in the Imperial units, British imperial and the United States customary units#Area, United States customary systems. It is traditionally defined as the area of one Chain (unit), ch ...
s in
Silicon Valley Silicon Valley is a region in Northern California that is a global center for high technology and innovation. Located in the southern part of the San Francisco Bay Area, it corresponds roughly to the geographical area of the Santa Clara Valley ...
.


Volume


Barn-megaparsec

This unit is similar in concept to the attoparsec, combining very large and small scales. When a
barn A barn is an agricultural building usually on farms and used for various purposes. In North America, a barn refers to structures that house livestock, including cattle and horses, as well as equipment and fodder, and often grain.Allen G ...
(a very small unit of area used for measuring the cross sectional area of
atomic nuclei The atomic nucleus is the small, dense region consisting of protons and neutrons at the center of an atom, discovered in 1911 by Ernest Rutherford at the University of Manchester based on the 1909 Geiger–Marsden gold foil experiment. Aft ...
) is multiplied by a
megaparsec The parsec (symbol: pc) is a unit of length used to measure the large distances to astronomical objects outside the Solar System, approximately equal to or (AU), i.e. . The parsec unit is obtained by the use of parallax and trigonometry, and ...
(a very large unit of length used for measuring the distances between
galaxies A galaxy is a system of stars, stellar remnants, interstellar gas, dust, and dark matter bound together by gravity. The word is derived from the Greek ' (), literally 'milky', a reference to the Milky Way galaxy that contains the Solar Sys ...
), the result is a human-scaled unit of volume approximately equal to of a
teaspoon A teaspoon (tsp.) is a small spoon that can be used to stir a cup of tea or coffee, or as a tool for measuring volume. The size of teaspoons ranges from about . For dosing of medicine and, in places where metric units are used, for cooking pu ...
(about 3 mL).


Hubble-barn

Similar to the barn-megaparsec, the Hubble-barn uses the barn with the
Hubble length Hubble's law, also known as the Hubble–Lemaître law, is the observation in physical cosmology that galaxies are moving away from Earth at speeds proportional to their distance. In other words, the farther a galaxy is from the Earth, the faster ...
, which is the radius of the visible universe as derived by using the
Hubble constant Hubble's law, also known as the Hubble–Lemaître law, is the observation in physical cosmology that galaxies are moving away from Earth at speeds proportional to their distance. In other words, the farther a galaxy is from the Earth, the faste ...
and the
speed of light The speed of light in vacuum, commonly denoted , is a universal physical constant exactly equal to ). It is exact because, by international agreement, a metre is defined as the length of the path travelled by light in vacuum during a time i ...
. This amounts to around 13.1
litre The litre ( Commonwealth spelling) or liter ( American spelling) (SI symbols L and l, other symbol used: â„“) is a metric unit of volume. It is equal to 1 cubic decimetre (dm3), 1000 cubic centimetres (cm3) or 0.001 cubic metres (m3). A ...
s (3.46 US
gallon The gallon is a unit of volume in British imperial units and United States customary units. The imperial gallon (imp gal) is defined as , and is or was used in the United Kingdom and its former colonies, including Ireland, Canada, Australia ...
s, 2.88 Imperial
gallon The gallon is a unit of volume in British imperial units and United States customary units. The imperial gallon (imp gal) is defined as , and is or was used in the United Kingdom and its former colonies, including Ireland, Canada, Australia ...
s).


Power


Donkey power

This facetious engineering unit is defined as 250
watt The watt (symbol: W) is the unit of Power (physics), power or radiant flux in the International System of Units (SI), equal to 1 joule per second or 1 kgâ‹…m2â‹…s−3. It is used to quantification (science), quantify the rate of Work ...
sabout a third of a
horsepower Horsepower (hp) is a unit of measurement of power, or the rate at which work is done, usually in reference to the output of engines or motors. There are many different standards and types of horsepower. Two common definitions used today are t ...
.


Pirate-ninja

A pirate-ninja is defined as one
kilowatt-hour A kilowatt-hour ( unit symbol: kWâ‹…h or kW h; commonly written as kWh) is a non-SI unit of energy equal to 3.6 megajoules (MJ) in SI units, which is the energy delivered by one kilowatt of power for one hour. Kilowatt-hours are a comm ...
(3.6 MJ) per Martian day, or sol. It is equivalent to approximately 40.55 watts. It is used in the 2011 novel '' The Martian'' by
Andy Weir Andrew Weir (; born June 16, 1972) is an American novelist. His 2011 novel '' The Martian'' was adapted into the 2015 film of the same name directed by Ridley Scott. He received the John W. Campbell Award for Best New Writer in 2016 and his 2 ...
. Weir said in a 2015 interview that the ''Curiosity'' rover team at the
Jet Propulsion Laboratory The Jet Propulsion Laboratory (JPL) is a Federally funded research and development centers, federally funded research and development center (FFRDC) in La Cañada Flintridge, California, Crescenta Valley, United States. Founded in 1936 by Cali ...
uses the similar unit 'watt-hours per sol' in their meetings, and the team told Weir that they should just call them milli-pirate-ninjas.


Time


Friedman

The Friedman is approximately six months, specifically six months in the future, and named after columnist
Thomas Friedman Thomas Loren Friedman ( ; born July 20, 1953) is an American political commentator and author. He is a three-time Pulitzer Prize winner who is a weekly columnist for ''The New York Times''. He has written extensively on foreign affairs, global ...
who repeatedly used the span in reference to when a determination of Iraq's future could be surmised.


Jiffy

A jiffy is a unit of time used in computer operating systems, being the interval of time between
system time In computer science and computer programming, system time represents a computer system's notion of the passage of time. In this sense, ''time'' also includes the passing of calendar date, days on the calendar. System time is measured by a ''sys ...
r interrupts. This interval varies from system to system, but is typically between 1 and 10 milliseconds.


Microcentury

According to
Gian-Carlo Rota Gian-Carlo Rota (April 27, 1932 – April 18, 1999) was an Italian-American mathematician and philosopher. He spent most of his career at the Massachusetts Institute of Technology, where he worked in combinatorics, functional analysis, proba ...
, the mathematician
John von Neumann John von Neumann ( ; ; December 28, 1903 â€“ February 8, 1957) was a Hungarian and American mathematician, physicist, computer scientist and engineer. Von Neumann had perhaps the widest coverage of any mathematician of his time, in ...
used the term microcentury to denote the maximum length of a lecture. One microcentury is 52 minutes and 35.7 secondsone millionth of a century.


Nanocentury

A unit sometimes used in computing, the term is believed to have been coined by
IBM International Business Machines Corporation (using the trademark IBM), nicknamed Big Blue, is an American Multinational corporation, multinational technology company headquartered in Armonk, New York, and present in over 175 countries. It is ...
in 1969 from the design objective "never to let the user wait more than a few nanocenturies for a response". A nanocentury is one-billionth of a century or approximately 3.156 seconds.
Tom Duff Thomas Douglas Selkirk Duff (born December 8, 1952) is a Canadian computer programmer. Life and career Early life Duff was born in Toronto, Ontario, Canada, and was named for his putative ancestor, the fifth Earl of Selkirk. He grew up in Tor ...
is cited as saying that, to within half a percent, a nanocentury is π seconds.


New York second

The New York second ("the shortest unit of time in the multiverse") is defined in
Terry Pratchett Sir Terence David John Pratchett (28 April 1948 – 12 March 2015) was an English author, humorist, and Satire, satirist, best known for the ''Discworld'' series of 41 comic fantasy novels published between 1983 and 2015, and for the Apocalyp ...
's novel '' Lords and Ladies'' as the period of time between the traffic lights turning green and the cab behind one honking. The idiomatic expression "in a
New York minute A New York minute is a very short period of time. New York Minute may also refer to: * ''New York Minute'' (film), a 2004 American family comedy film starring Mary-Kate and Ashley Olsen * "New York Minute" (''Law & Order''), a 2005 episode of t ...
", used in various contexts to mean an instant or a very short time, is of similar origin, referring to the busyness of New York and impatience of its residents.


Ohnosecond

An "ohnosecond" is the second after one makes a terrible mistake, such as deleting the wrong file or sending a text message to the wrong person, where the person in question can do nothing but say "oh no". The term is believed to originate from Elizabeth Powell Crowe's 1993 novel, ''The Electronic Traveler''.


Scaramucci

A Scaramucci (or Mooch) is 11 (sometimes 10) days and is named after the length of White House Communications Director
Anthony Scaramucci Anthony Scaramucci ( ; born January 6, 1964) is an American financier and broadcaster who briefly served as the White House communications director from July 21 to July 31, 2017. Scaramucci worked at Goldman Sachs's investment banking, equitie ...
's tenure under President Trump.


Shake

In nuclear physics, a ''shake'' is 10 nanoseconds, the approximate time for a generation within a nuclear chain reaction. The term comes from the expression "two shakes of a lamb's tail", meaning quickly.


Tatum

A tatum is the "lowest regular
pulse train A pulse train is a sequence of discrete pulses occurring in a signal over time. Typically, these pulses are of similar shape and are evenly spaced in time, forming a periodic or near-periodic sequence. Pulse trains outputs are widely used in tach ...
that a listener intuitively infers from the timing of perceived musical events". It is named after the jazz pianist
Art Tatum Arthur Tatum Jr. (, October 13, 1909 – November 5, 1956) was an American jazz pianist who is widely regarded as one of the greatest ever. From early in his career, fellow musicians acclaimed Tatum's technical ability as extraordinary. Tatum a ...
, who was notable for his high-speed playing.


Radioactivity


Banana equivalent dose

Banana equivalent dose Banana equivalent dose (BED) is an informal unit of measurement of ionizing radiation exposure, intended as a general educational example to compare a dose of radioactivity to the dose one is exposed to by eating one average-sized banana. Bananas ...
, the amount of radiation exposure gained from eating an average banana. A single BED is considered to be negligibly small, posing no health risk.


Non-conventional

These units describe dimensions which are not and cannot be covered by the International System of Units.


Blatt (odor)

In
Steven Levy Steven Levy (born 1951) is an American journalist and editor at large for '' Wired'' who has written extensively for publications on computers, technology, cryptography, the internet, cybersecurity, and privacy. He is the author of the 1984 boo ...
's book '' Hackers: Heroes of the Computer Revolution'', Levy mentions how Richard Greenblatt prioritized his work over bathing, leading to a strong stench. Therefore, Greenblatt's coworkers conceived of the blatt as a joke, though the milliblatt was used more, as the blatt was so powerful it was "just about inconceivable".


Canard (quackery)

The canard is a unit of
quackery Quackery, often synonymous with health fraud, is the promotion of fraudulent or Ignorance, ignorant medicine, medical practices. A quack is a "fraudulent or ignorant pretender to medical skill" or "a person who pretends, professionally or public ...
created by Andy Lewis in the need for a fractional index measuring
pseudoscience Pseudoscience consists of statements, beliefs, or practices that claim to be both scientific and factual but are incompatible with the scientific method. Pseudoscience is often characterized by contradictory, exaggerated or unfalsifiable cl ...
. It is proposed as an
SI unit The International System of Units, internationally known by the abbreviation SI (from French ), is the modern form of the metric system and the world's most widely used system of units of measurement, system of measurement. It is the only system ...
to replace the old "Crackpot Index" that was presented in 1998. The scale is from 0 to 10, with 0 being 'no quackery' and 10 being 'complete quackery'.


Dirac (information flow)

Physicist
Paul Dirac Paul Adrien Maurice Dirac ( ; 8 August 1902 – 20 October 1984) was an English mathematician and Theoretical physics, theoretical physicist who is considered to be one of the founders of quantum mechanics. Dirac laid the foundations for bot ...
was known among his colleagues for his precise yet taciturn nature. His colleagues in Cambridge jokingly defined a unit of a dirac which was one word per hour.


Garn (nausea)

The Garn is a unit used by NASA to measure nausea and travel sickness caused by
space adaptation syndrome Space adaptation syndrome (SAS) or space sickness is a condition experienced by as many as half of all space travelers during their adaptation to weightlessness once in orbit. It is the opposite of terrestrial motion sickness since it occurs whe ...
. It is named after astronaut
Jake Garn Edwin Jacob "Jake" Garn (born October 12, 1932) is an American politician from the U.S. state of Utah. A member of the Republican Party (United States), Republican Party, he served as a member of the United States Senate from 1974 to 1993. Garn ...
, who was frequently sick during tests and on orbit. A score of one Garn means the sufferer is completely incapacitated.


Hawking Index (reading capacity)

Invented by mathematician
Jordan Ellenberg Jordan Stuart Ellenberg (born October 30, 1971) is an American mathematician who is a professor of mathematics at the University of Wisconsin–Madison. His research involves arithmetic geometry. He is also an author of both fiction and non-fict ...
, the Hawking Index (HI) is the percentage of a book's readers who will finish it. Books with a lower HI are less likely to be completed. It is named after
Stephen Hawking Stephen William Hawking (8January 194214March 2018) was an English theoretical physics, theoretical physicist, cosmologist, and author who was director of research at the Centre for Theoretical Cosmology at the University of Cambridge. Between ...
, whose book ''
A Brief History of Time ''A Brief History of Time: From the Big Bang to Black Holes'' is a book on cosmology by the physicist Stephen Hawking, first published in 1988. Hawking writes in non-technical terms about the structure, origin, development and eventual fate of ...
'' scores 6.6% on the scale.


Helen (beauty)

Helen of Troy Helen (), also known as Helen of Troy, or Helen of Sparta, and in Latin as Helena, was a figure in Greek mythology said to have been the most beautiful woman in the world. She was believed to have been the daughter of Zeus and Leda (mythology), ...
(from the ''
Iliad The ''Iliad'' (; , ; ) is one of two major Ancient Greek epic poems attributed to Homer. It is one of the oldest extant works of literature still widely read by modern audiences. As with the ''Odyssey'', the poem is divided into 24 books and ...
'') is widely known as "the face that launched a thousand ships". Thus, 1 millihelen is the amount of beauty needed to launch a single ship. Other derived units such as the negative helen (the power to ''beach'' ships) have also been described.


Lenat (bogosity)

The unit of bogosity, i.e. how bogus a person, claim, or proceeding is, derived from the fictional field of quantum bogodynamics, is the Lenat, named after
Douglas Lenat Douglas Bruce Lenat (September 13, 1950 – August 31, 2023) was an American computer scientist and researcher in artificial intelligence who was the founder and CEO of Cycorp, Inc. in Austin, Texas. Lenat was awarded the biannual IJCAI Comp ...
, a computer scientist and professor who failed one of his students on an exam because they answered "AI is bogus" on all of the questions. The Lenat itself is seldom used, as it is understood to be too large for normal conversation; its most common form is the microLenat.


Lovelace (software quality)

The Lovelace (Ll) is the unit of the lack of quality of an
operating system An operating system (OS) is system software that manages computer hardware and software resources, and provides common daemon (computing), services for computer programs. Time-sharing operating systems scheduler (computing), schedule tasks for ...
, i.e., a measure of
system administrator An IT administrator, system administrator, sysadmin, or admin is a person who is responsible for the upkeep, configuration, and reliable operation of computer systems, especially multi-user computers, such as Server (computing), servers. The ...
s' opinions about how badly the system "sucks". The unit was coined by members of the system administrator profession who hold a basic tenet that "software that does not suck does not exist". According to the
Usenet Usenet (), a portmanteau of User's Network, is a worldwide distributed discussion system available on computers. It was developed from the general-purpose UUCP, Unix-to-Unix Copy (UUCP) dial-up network architecture. Tom Truscott and Jim Elli ...
alt.sysadmin.recovery FAQ, one Lovelace is considered a rather large quantity. SI prefixes are commonly used to denote practical quantities.


MegaFonzie (coolness)

A MegaFonzie is a fictional unit of measurement of an object's coolness invented by
Professor Farnsworth Professor Hubert J. Farnsworth, commonly referred to in-show as either Professor Farnsworth or simply Professor, is a fictional character in the American animated television series ''Futurama''. The mad scientist proprietor of the Planet Express ...
in the 2003 ''
Futurama ''Futurama'' is an American animated science fiction sitcom created by Matt Groening for the Fox Broadcasting Company and later revived by Comedy Central, and then Hulu. The series follows Philip J. Fry, who is cryogenically preserved for 1 ...
'' episode "
Bender Should Not Be Allowed on TV "Bender Should Not Be Allowed on TV" (also known as "Bender Should Not Be Allowed on Television") is the sixth episode in the fourth season of the American animated television series '' Futurama'', and the 60th episode of the series overall. ...
". A 'Fonzie' is about the amount of coolness inherent in the ''
Happy Days ''Happy Days'' is an American television sitcom that aired first-run on the American Broadcasting Company, ABC network from January 15, 1974, to July 19, 1984, with a total of 255 half-hour episodes spanning 11 seasons. Created by Garry Marsha ...
'' character
Fonzie Arthur Herbert Fonzarelli, better known as "Fonzie" or "The Fonz", is a fictional character played by Henry Winkler in the American sitcom ''Happy Days'' (1974–1984). He was originally a secondary character, but was soon positioned as a lea ...
.


Pouter (obstruction)

During
World War II World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
, scientists working for the British Department of Miscellaneous Weapons Development encountered a particularly obstructive Royal Navy officer called Commander Pouter, for whom the unit of Obstruction was named, due to his implacable opposition to any work being carried out in the field for which he was personally responsible. Subsequently, the micropouter was used, as it was hoped that no individual of a similarly difficult disposition would be encountered, and the pouter was too large a unit for everyday use.


Rictus scale (media coverage of earthquakes)

Tom Weller suggests the Rictus scale for earthquake intensity (a takeoff of the conventional
Richter scale The Richter scale (), also called the Richter magnitude scale, Richter's magnitude scale, and the Gutenberg–Richter scale, is a measure of the strength of earthquakes, developed by Charles Richter in collaboration with Beno Gutenberg, and pr ...
), measuring media coverage of the event.


Shortz (fame)

This is a unit of fame, hype, or infamy, named for the American puzzle creator and editor,
Will Shortz William F. Shortz (born August 26, 1952) is an American puzzle creator and editor who is the crossword editor for ''The New York Times''. He graduated from Indiana University with a degree in the invented field of enigmatology. After starting h ...
. The measure is the number of times one's name has appeared in ''The New York Times'' crossword puzzle as either a clue or solution. Arguably, this number should only be calculated for the Shortz era (1993–present).
Shortz William F. Shortz (born August 26, 1952) is an American puzzle creator and editor who is the crossword editor for ''The New York Times''. He graduated from Indiana University with a degree in the invented field of enigmatology. After starting hi ...
himself is 1 Shortz famous.


Springfield (county fairs)

Invented by
San Francisco Chronicle The ''San Francisco Chronicle'' is a newspaper serving primarily the San Francisco Bay Area of Northern California. It was founded in 1865 as ''The Daily Dramatic Chronicle'' by teenage brothers Charles de Young and M. H. de Young, Michael H. ...
culture critic Peter Hartlaub, this rates county fairs by the quality of their musical acts. Fairs are rated a scale of one to four Springfields, "in honor of
Rick Springfield Richard Lewis Springthorpe (born 23 August 1949), known professionally as Rick Springfield, is an Australian-American musician and actor. He was a member of the pop rock group Zoot from 1969 to 1971, then started his solo career with his debut ...
, arguably the greatest county fair free act in history."


Standardised Giraffe Unit (animal size)

The standardised giraffe unit (SGU) is proposed by the
European Space Agency The European Space Agency (ESA) is a 23-member International organization, international organization devoted to space exploration. With its headquarters in Paris and a staff of around 2,547 people globally as of 2023, ESA was founded in 1975 ...
's
Near-Earth Object Coordination Centre The Near-Earth Object Coordination Centre (NEOCC) is the main centre of the Planetary Defence Office of the European Space Agency (ESA). The NEOCC, which is based at ESRIN in Frascati, Italy, coordinates observations of small bodies such as astero ...
as a standardised unit for animal size reference. The agency defines the SGU in terms of other animals as shown in the adjoining table.


Thaum (magic)

In the ''
Discworld ''Discworld'' is a comic fantasy"Humorous Fantasy" in David Pringle, ed., ''The Ultimate Encyclopedia of Fantasy'' (pp.31-33). London, Carlton,2006. book series written by the English author Sir Terry Pratchett, set on the Discworld, a fl ...
'' series of comic fantasy novels by
Terry Pratchett Sir Terence David John Pratchett (28 April 1948 – 12 March 2015) was an English author, humorist, and Satire, satirist, best known for the ''Discworld'' series of 41 comic fantasy novels published between 1983 and 2015, and for the Apocalyp ...
, the thaum is a basic unit of magical strength, defined as the amount of magic needed to create one small white
pigeon Columbidae is a bird family consisting of doves and pigeons. It is the only family in the order Columbiformes. These are stout-bodied birds with small heads, relatively short necks and slender bills that in some species feature fleshy ceres. ...
or three normal sized
billiard balls A billiard ball is a small, hard ball used in cue sports, such as carom billiards, pool, and snooker. The number, type, diameter, color, and pattern of the balls differ depending upon the specific game being played. Various particular ball pr ...
.


Warhol (fame)

This is a unit of fame or
hype HYPE is a Polish PocketQube nanosatellite developed by students at the AGH University of Krakow designed with a " selfie-stick" to image a 240x240px OLED screen on the satellite's surface. At the time of its launch onboard the Falcon 9 Transpor ...
, derived from the dictum attributed to
Andy Warhol Andy Warhol (;''Random House Webster's Unabridged Dictionary''"Warhol" born Andrew Warhola Jr.; August 6, 1928 – February 22, 1987) was an American visual artist, film director and producer. A leading figure in the pop art movement, Warhol ...
that "everyone will be world-famous for fifteen minutes". It represents
fifteen minutes of fame 15 minutes of fame is short-lived media publicity or celebrity of an individual or phenomenon. The expression was inspired by a quotation misattributed to Andy Warhol: "In the future, everyone will be world-famous for 15 minutes." Attributed to ...
. Some multiples are: *1 kilowarhol – famous for 15,000 minutes, or 10.42 days. A sort of
metric Metric or metrical may refer to: Measuring * Metric system, an internationally adopted decimal system of measurement * An adjective indicating relation to measurement in general, or a noun describing a specific type of measurement Mathematics ...
"nine-day wonder". *1 megawarhol – famous for 15 million minutes, or 28.5 years. First used by
Cullen Murphy John Cullen Murphy, Jr. (born September 1, 1952) is an American writer, journalist and editor who was managing editor of ''The Atlantic'' magazine from 1985 to 2006. Early life and education He was born in New Rochelle, New York, in 1952, a son ...
in 1997.


Wheaton (influence)

The Wheaton is a measurement of
Twitter Twitter, officially known as X since 2023, is an American microblogging and social networking service. It is one of the world's largest social media platforms and one of the most-visited websites. Users can share short text messages, image ...
followers relative to celebrity
Wil Wheaton Richard William "Wil" Wheaton III (born July 29, 1972) is an American actor and writer. He portrayed Wesley Crusher on the television series ''Star Trek: The Next Generation'', Gordie Lachance in the film ''Stand by Me (film), Stand by Me'', ...
, equal to 500,000 followers. The unit was invented by
John Kovalic John Kovalic (born Robert John Kovalic, Jr. on 24 November 1962) is an American cartoonist, illustrator, and writer. Career Born in Manchester, England, Kovalic is best known for his ''Dork Tower'' comic book, comic strip, and webcomic, and oth ...
in the May 21, 2009 edition of his
webcomic Webcomics (also known as online comics or Internet comics) are comics published on the internet, such as on a website or a mobile app. While many webcomics are published exclusively online, others are also published in magazines, newspapers, or ...
''
Dork Tower ''Dork Tower'' is an online comics, comic created, written and drawn by John Kovalic. It chronicles the lives of a group of geeks living in the fictional town of Mud Bay, Wisconsin. Mud Bay's design is strongly influenced by the writer's home, a ...
''. The comic includes references to units named for other celebrities, such as
Neil Gaiman Neil Richard MacKinnon Gaiman (; born Neil Richard Gaiman; 10 November 1960) is an English author of short fiction, novels, comic books, audio theatre, and screenplays. His works include the comic series ''The Sandman (comic book), The Sandma ...
,
John Hodgman John Kellogg Hodgman (born June 3, 1971) is an American author, actor, and humorist. In addition to his published written works, such as his satirical trilogy '' The Areas of My Expertise'', '' More Information Than You Require'', and '' That Is ...
,
Jonathan Coulton Jonathan William Coulton (born December 1, 1970), often called "JoCo" by fans, is an American folk/comedy singer-songwriter, known for his songs about geek culture and his use of the Internet to draw fans. Among his most popular songs are "Cod ...
, and
Felicia Day Kathryn Felicia Day (born June 28, 1979) is an American actress, singer, writer, and web series creator. She is the creator and star of the web series '' The Guild'' (2007–2013), a show loosely based on her life as a gamer. She also wrote and ...
.


Minutes per Big Mac (economic)

Minutes per Big Mac (alternatively, ''minimum wage minutes per Big Mac'') refers to how many minutes one has to work in a country or region at average wage (or, correspondingly, at
minimum wage A minimum wage is the lowest remuneration that employers can legally pay their employees—the price floor below which employees may not sell their labor. List of countries by minimum wage, Most countries had introduced minimum wage legislation b ...
) to afford one
Big Mac The Big Mac is a brand of hamburger sold by the international fast food restaurant chain McDonald's. It was introduced by a Greater Pittsburgh Region, Greater Pittsburgh area Franchising, franchisee in 1967 and expanded nationwide in 1968, and ...
, a
hamburger A hamburger (or simply a burger) consists of fillings—usually a patty of ground meat, typically beef—placed inside a sliced bun or bread roll. The patties are often served with cheese, lettuce, tomato, onion, pickles, bacon, or chilis ...
sold by
McDonald's McDonald's Corporation, doing business as McDonald's, is an American Multinational corporation, multinational fast food chain store, chain. As of 2024, it is the second largest by number of locations in the world, behind only the Chinese ch ...
, in that country or region.


Waffle House Index (disaster response)

The Waffle House Index is an informal
metric Metric or metrical may refer to: Measuring * Metric system, an internationally adopted decimal system of measurement * An adjective indicating relation to measurement in general, or a noun describing a specific type of measurement Mathematics ...
used by
FEMA The Federal Emergency Management Agency (FEMA) is an agency of the United States Department of Homeland Security (DHS), initially created under President Jimmy Carter by Presidential Reorganization Plan No. 3 of 1978 and implemented by two Exec ...
to gauge the severity of an incoming storm. Because
Waffle House Waffle House, Inc. is an American restaurant chain with over 2,000 locations in 25 states in the United States. The bulk of the locations are in the Midwest and the South, where the chain is a regional cultural icon. The menu consists mainly o ...
is known for staying open 24 hours, 365 days a year, the closure of a Waffle House is a helpful tool to measure the severity of an approaching storm.


See also

*
History of measurement The earliest recorded systems of weights and measures originate in the 3rd or 4th millennium BC. Even the very earliest civilizations needed measurement for purposes of agriculture, construction and trade. Early standard units might only have ap ...
*
Indefinite and fictitious numbers Indefinite and fictitious numbers are words, phrases and quantities used to describe an indefinite size, used for comic effect, for exaggeration, as placeholder names, or when precision is unnecessary or undesirable. Other descriptions of this con ...
*
List of obsolete units of measurement This is a list of obsolete units of measurement, organized by type. These units of measurement are typically no longer used, though some may be in limited use in various regions. For units of measurement that are unusual but not necessarily obsolet ...
*
List of unusual units of measurement An unusual unit of measurement is a unit of measurement that does not form part of a coherent system of measurement, especially because its exact quantity may not be well known or because it may be an inconvenient multiple or fraction of a base ...
*
Outline of metrology and measurement The following is a topical outline of the English language Wikipedia articles on the topic of metrology and measurement. Metrology is the science of measurement and its application. Main articles * Metrology * Measurement Metrology overviews ...
*
Systems of measurement A system of units of measurement, also known as a system of units or system of measurement, is a collection of units of measurement and rules relating them to each other. Systems of measurement have historically been important, regulated and defi ...


Notes


References

{{systems of measurement
Humorous Humour (Commonwealth English) or humor (American English) is the tendency of experiences to provoke laughter and provide amusement. The term derives from the humoral medicine of the ancient Greeks, which taught that the balance of fluids in t ...
Tech humour Use mdy dates from March 2012