Some traditions begin with a grand ceremony. The U.S. Senate’s candy desk began with something much more portable: a drawer of sweets and a senator willing to share.
The tradition is delightfully specific. At the start of each Congress, one desk in the Senate Chamber takes on the unofficial job of being the candy desk. Its keeper stocks it with treats for colleagues passing through one of the room’s busy entrances. The official history is less a tale of a permanent piece of furniture than of a location, a habit, and a succession of people who agree that a little sugar belongs in the workday.
It started with George Murphy
The Senate’s curator dates the custom to 1965, when California senator George Murphy kept hard-candy lozenges in his desk drawer. The curator notes that the lozenges were likely useful after vocal-cord surgery. Murphy was also a former stage and film performer, a detail that makes the origin story feel unusually well cast.
In 1968, Murphy moved to a rear aisle desk near a frequently used entrance and invited colleagues to help themselves. That bit of placement mattered. The candy could be shared without turning the chamber into a candy store: people simply passed the desk, opened the drawer, and carried on.
Editorial illustration of the small act of sharing that turned a desk drawer into a tradition.
The desk is a job, not a relic
After Murphy left the Senate in 1971, the senators who occupied the same general location continued the practice. A 1979 floor speech publicly acknowledged the early run of candy-desk keepers, according to the Senate curator. Since 1985, the curator’s office has tracked the occupants.
That history explains a charming wrinkle: the candy desk is not permanently bolted to one numbered desk. The Senate’s guide says any desk can become the candy desk in a new Congress, but the designated one must be on the Republican side, in the last row, on the aisle, next to the chamber’s busiest entrance. In other words, the tradition follows a useful spot as much as it follows a drawer.
Editorial illustration showing why an aisle-side desk is ideal for a shared candy drawer.
What is in the drawer?
The earliest supplies were usually hard candy. Later keepers broadened the selection to bite-size, individually wrapped sweets, often from their home states. The treats change with the person holding the seat; the quiet invitation to take one is the part that persists.
It is an odd little example of how institutions accumulate personality. Rules and procedures organize a chamber, but a shared drawer can create a tiny recurring pause in the day: a greeting, a piece of candy, and the reminder that even formal places make room for human habits.
Editor’s note: The images in this article are original editorial illustrations, not archival photographs or technical reconstructions.
For decades, audiences could sit down across a chessboard from a figure in a turban and watch it move the pieces with its own hand. The performer was known as the Mechanical Turk, and its showmanship was so persuasive that it became one of history’s most durable stories about a machine that seemed to think.
The strange part is not that the Turk was a primitive computer. It was not. It was a stage illusion built around a real human chess player, hidden inside an elaborate cabinet. The spectacle’s real achievement was making the audience look at exposed gears and open doors—and still miss the person doing the thinking.
A machine made for an audience
Wolfgang von Kempelen introduced the device at the court of Empress Maria Theresa in 1769, according to a Smithsonian account of the Turk’s later descendants. The figure sat behind a wooden cabinet, dressed in stylized Turkish costume, and appeared to play chess against visitors. The costume was part of the performance’s exoticized stage presentation, not a description of a real person or culture.
Its later showman, Johann Nepomuk Mälzel, took the attraction on tour. A 1828 Boston exhibition broadside preserved by the Library of Congress advertised the “automaton chess-player” as invented by “De Kempelin” and improved by Mälzel. It promised that the figure would play members of the audience, move its head, eyes, lips and hands, announce échec (“check”), and correct an invalid move. That is an advertisement’s claim, of course—but it is unusually vivid evidence of what paying spectators were invited to believe.
Editorial illustration: a conceptual cutaway, not a technical reconstruction of the Turk.
The trick was space, not artificial intelligence
The cabinet was designed to make a hidden operator seem impossible. During demonstrations, doors could be opened to reveal machinery. The point was not merely to hide a person behind a closed panel; it was to choreograph what spectators saw when the cabinet was opened and in what order. The operator could shift position within the available space while visible mechanisms helped occupy the eye.
The Smithsonian describes the same basic strategy in its history of Ajeeb, a later chess-and-checkers automaton inspired by the Turk: panels displayed complex machinery while hidden operators worked inside the base. That comparison is useful because it keeps the distinction plain. The moving arm and theatrical cabinet were mechanical; the chess judgment came from a human being.
That distinction was already part of the public conversation in the nineteenth century. In an encyclopedia digitized by the Library of Congress, the chess player is described as a figure of a Turk that moved chessmen and was “generally supposed” to conceal a small person directing the moves. The entry’s conclusion is blunt: the ingenuity lay in concealing the real player, rather than in creating a self-thinking machine.
Why the reveal did not ruin the story
Knowing the Turk’s secret does not make the object less interesting. It changes the question. Instead of asking how eighteenth-century machinery could calculate a chess move, we can ask how a designer and a performer created an experience in which the audience wanted to grant a cabinet a mind.
That is why the Turk still feels contemporary. Today’s technology debates often focus on what a system can do. The Turk reminds us to ask a parallel question: what labor, expertise, and staging sit behind the appearance of autonomy? Its concealed player was not a flaw in the story. The player was the story’s essential collaborator.
The device’s afterlife also shows how entertainment can outlast its physical object. A Smithsonian guest letter traces the Turk’s 1769 debut and identifies the concealed human player as the source of its chess ability. The original object was later destroyed in the 1854 fire at Philadelphia’s Chinese Museum, according to a technical history from Vienna University of Technology and a contemporary-history collection held by the Free Library of Philadelphia. What survives is a dense paper trail: broadsides, essays, reports, and the recurring temptation to call a convincing performance a thinking machine.
Editorial illustration of the Mechanical Turk’s theatrical appeal; it does not depict a documented performance.
The weird truth
The Mechanical Turk was neither magic nor an early computer. It was a meticulously staged collaboration between woodwork, mechanisms, a hidden chess player, and an audience primed to be astonished. The cabinet never thought. But it made people think—about machines, deception, and how readily a convincing performance can acquire a mind in the public imagination.
All artwork in this story is an original editorial illustration. It is not archival or documentary imagery of Zzyzx.
On the drive through California’s Mojave Desert, a road sign can seem to be playing a private joke: ZZYZX. It looks like someone tried to win a contest for the last possible word in the dictionary. But the sign points to a real place—an oasis on the edge of Soda Dry Lake, west of Baker—and its odd name sits on top of a much older landscape.
Before the name, there was water
The National Park Service describes Soda Springs as a natural spring system that the Mohave and Chemehuevi people used for many generations. It was also used by early western explorers and the U.S. Army by the mid-1800s. The wider basin tells an equally improbable story: when the climate was cooler and wetter, Lake Mojave covered this area; as conditions changed, salt flats remained while water persisted at the springs.
That is the useful way to approach Zzyzx: not as a desert punch line, but as a name attached to a real, long-lived water source. The place’s layers—Indigenous use, travel routes, commercial ambition, and research—do not all belong to the same era or carry the same meaning.
Editorial illustration of the springs-and-salt-flat setting; it is a conceptual image, not a geological survey.
A resort with an alphabet-ending name
In 1944, Curtis Springer began operating the Zzyzx Mineral Springs and Health Resort on mining-claim land, according to the National Park Service. The operation was a full desert spectacle: a castle-like building, dining hall, library, pool house, goat farm, rabbit rooms, radio advertising, and mail-order health products. The name proved memorable; the setting made the pitch feel even stranger.
That history needs a little caution around the edges. Springer called himself a doctor despite leaving school after ninth grade, the Park Service says. By the late 1960s, complaints were increasing, and the site was far from medical care when genuinely ill visitors arrived. The account also notes accusations involving false advertising and tax evasion, along with a Bureau of Land Management challenge to his claims. The colorful resort story is documented; it is not a reason to repeat its health claims.
Editorial illustration inspired by the idea of a mid-century desert resort, not a reconstruction of a historic building.
What Zzyzx is now
California State University took over the facility in 1976. Today the CSU Desert Studies Center describes itself as a 1,280-acre field station on the western edge of Mojave National Preserve, with access to salt flats, creosote lowlands, Joshua tree forests, rocky slopes, lava flows, and dunes. It supports courses and research; it is not simply a deserted roadside ruin.
That distinction matters to visitors. The National Park Service says people may visit Lake Tuendae and the picnic area, while the buildings across the lake are private, active educational property. The Center likewise says its facilities are closed without a reservation. The best version of a Zzyzx stop is therefore a short, curious look at the public landscape—not an invitation to explore closed buildings.
Why the word sticks
Zzyzx earns its reputation because the name is visually absurd, but the story lasts because the place is not. A spring in a salt basin made travel, settlement, commerce, and study possible in different moments. The sign may be the hook; Soda Springs is the reason there is anything to point to.
A Minnesota waterfall looks as if it sends half a river into a hole in the rock. It does not. The best measurements say the water returns to the Brule River below the falls—just out of sight.
At Devil’s Kettle Falls in Judge C. R. Magney State Park, near Grand Marais, Minnesota, the Brule River arrives at a rocky ledge and splits. One branch makes an ordinary-looking drop into a pool. The other falls into a dark, rounded opening called the kettle. From the overlook, that second stream seems to vanish.
That visual trick has produced decades of perfectly reasonable questions: Is there a hidden tunnel? Does the water travel to Lake Superior? Why do tossed objects not immediately appear downstream? The short answer is less supernatural and more interesting: measuring the river turned out to be more useful than watching the hole.
What makes the falls look impossible
The Minnesota Department of Natural Resources describes the falls as a split in the Brule River, with one side dropping into a pool and the other into the large pothole. The park sits in a landscape shaped by ancient volcanic activity; the exposed rock around the falls is part of a thick volcanic flow complex. The setting matters because the popular “secret cave to Lake Superior” explanation would require a kind of long, open underground route that geologists did not expect in that hard volcanic rock.
Folklore naturally filled the gap. Visitors tried informal tests with sticks and other floating objects, then waited for a reappearance that did not come. Those observations are memorable, but they are not a water-budget experiment. A powerful plunge pool can trap, sink, break up, or delay visible debris, while the water itself keeps moving.
The clue was the flow above and below
In 2016, DNR hydrologists measured the river above Devil’s Kettle and then again several hundred feet downstream. They recorded 123 cubic feet of water per second above the falls and 121 cubic feet per second below. The DNR said the small difference was within the measuring equipment’s normal tolerance—effectively no missing water in the reach below the kettle.
That does not mean anyone can point to a neat pipe with a labeled exit. It means the simplest explanation fits the observations: the water entering the kettle resurges into the Brule River downstream, where a turbulent, submerged system hides the route from a visitor at the overlook. The DNR reported that a dye trace was planned as a later visual test; the stream-gauging result itself is the evidence behind the conclusion that the river is not being diverted away.
Editorial illustration generated for Weird News. It is a conceptual visualization of turbulent water, not a documentary image or a map of the falls.
Why a missing stick is not a missing river
Water and floating objects do not behave alike in a violent plunge pool. The DNR’s 2017 account quoted University of Minnesota geologist Calvin Alexander’s explanation that the pool’s recirculating currents can hold material underwater and break it apart before it resurfaces farther downstream. In other words, a log is a poor tracer: it has size, buoyancy, drag, and a tendency to get caught in chaotic flow. A flow measurement, by contrast, compares the river’s total volume.
That distinction turns Devil’s Kettle into a useful lesson in how a good mystery gets investigated. The striking view raised a question; the geology narrowed the plausible answers; then hydrologists checked whether the river was actually losing water. The result leaves room for wonder at the hidden turbulence without needing to invent a tunnel.
A strange place, with a very ordinary accounting
Devil’s Kettle is still an odd thing to see: a river splitting around a rock rib, with one half visibly continuing and the other apparently swallowed. But the known evidence supports a less dramatic destination. The water is still part of the Brule River.
If you visit, keep the mystery observational. Follow current park guidance, stay on designated trails and overlooks, and do not throw objects into the water to repeat the old tests. The point is not to make the river reveal its route on command; it is to notice how much can happen in a few hidden, turbulent seconds.
All images in this article are Editorial illustration.s, created to explain the technology. They are not photographs of a particular surviving arrow or beacon.
In parts of the American West, a hiker or satellite-image browser can still run into an odd piece of aviation infrastructure: a giant concrete arrow, laid flat on the ground and pointing toward an empty horizon. It can look like a forgotten piece of roadside art. In fact, it was part of an early navigation system built for the age when getting lost after sunset could make air mail slower than the train.
Editorial illustration, not a depiction of a particular historic installation.
Before electronic navigation, the ground had to give directions
Early air-mail pilots often navigated visually, following railroads, rivers and towns. Night flying made that method especially precarious. The National Air and Space Museum describes a 1921 cross-country test in which bonfires were meant to help pilots find the route; only one of the two mail planes completed the trip after an Omaha fire was left unlit. The episode helped make the case for a more reliable, built system of guidance.
That system became the lighted airway. The Smithsonian records the first lighted airway beacon in 1923, and the Federal Aviation Administration says the standardized installations were typically placed about 10 miles apart. A 51-foot tower carried a powerful rotating light, while two course lights pointed forward and backward along the route. The lights could flash a code identifying the beacon site.
Why the arrows were so enormous
The lights worked at night. By day, pilots needed a simpler cue: the tower usually stood in the center of a concrete arrow about 70 feet long, according to the FAA’s historical account. The arrow pointed toward the next beacon. Where a generator shed was needed, it sat at the feather end of the arrow.
Editorial illustration of the basic arrangement described in FAA history; it is not a survey of one site.
That is why the surviving shapes can feel so delightfully oversized. They were not signs for motorists. They were a high-contrast, pilot-facing instruction written at landscape scale, intended to be read from above when a moving aircraft did not have the luxury of stopping to ask for directions.
A chain of small lighthouses
The concrete arrows were only one part of a network. The Air and Space Museum says that the 1926 Air Commerce Act accelerated beacon construction, and that acetylene-powered beacons with Fresnel lenses appeared along air-mail airways. By 1946, it reports, 2,112 beacons operated on 124 U.S. airways.
Editorial illustration of how repeated beacon sites could make a route legible at night.
It is tempting to describe the arrows as relics from a time before navigation existed. The more interesting truth is that they were navigation: an ambitious, visible network made from light, concrete and a pilot’s ability to see the next point in the chain. Radio navigation gradually made the beacons obsolete, and the Smithsonian says the last federal airway beacon was decommissioned in 1972. Some towers and arrows remain, though, turning up as quiet reminders that the first national air routes once had to be drawn directly onto the land.
This article contains original editorial illustrations. They are not archival images or documentary evidence of the ritual.
On the Oga Peninsula in northern Japan, the most emphatic New Year’s visitors do not arrive with a card. They arrive in straw raincoats and carved-looking masks, calling into homes as part of the local Namahage tradition.
The masks can look alarming to an outsider, which is part of why the custom travels so well in photographs and headlines. But “terrifying monsters invade a village” is the wrong frame. In Oga, Namahage is a community ritual: local participants take on the role of visiting deities, households receive them, and the encounter carries reminders about work, conduct and the year ahead.
Original editorial illustration. It is not a depiction of a particular village, household or historical event.
The point is a visit, not a scare
UNESCO describes Namahage as one expression within Japan’s wider Raiho-shin traditions: ritual visits by masked and costumed deities around a new year or seasonal turning point. The organization says these practices grow from folk beliefs that visitors from beyond the community bring good fortune. Locals performing the roles move through homes, admonish idleness and encourage children to behave well; hosts offer a special meal before the visitors continue on.
Oga’s Namahage is most closely associated with New Year’s Eve. The Namahage Museum calls it a union of the local folk custom and a Shinto festival. Its description is practical rather than spooky: young men in masks and straw garments call at village homes, including those of new wives and children, and urge them to study, work hard and follow their families’ guidance. Other household members answer on their behalf.
That structure matters. The frightening face is a role, and the exchange is social. UNESCO’s record of Oga’s nomination describes a meal and conversation with the householder before the visitors offer wishes for the new year. The ritual’s force comes from everyone knowing the script—and from a community deciding that the year should begin with a very theatrical check-in.
One name, many local versions
“Namahage” is not a single standardized costume. Oga’s official cultural site notes that masks differ from village to village. The Namahage Museum says masks actually used across Oga appear in more than 150 locations. Their faces, materials and accompanying details can reflect place and local industry, according to the Oga–Ogata Geopark.
Original editorial illustration of costume-making materials. The masks are imaginative, not documentation of specific Oga designs.
This variety is a useful guardrail against treating the tradition as a costume category. A red mask and a blue mask may be familiar shorthand, but individual communities preserve their own practices. Oga’s Namahage was designated an Important Intangible Folk Cultural Property of Japan in 1978, and the broader Raiho-shin element was inscribed on UNESCO’s Representative List of the Intangible Cultural Heritage of Humanity in 2018.
Folklore is part of the story
Accounts of Namahage’s origins are not settled history. The museum explicitly says that much remains unknown about how the Oga custom began. The Oga–Ogata Geopark, for example, presents a local legend about ogres building the stone steps at Goshado; it labels that account as legend. That distinction is worth keeping: the ongoing ritual is documented, while explanations for its deeper beginnings belong to folklore and local interpretation.
What is documented is the work of keeping the custom alive. UNESCO notes workshops on conduct and costume-making, and museums in Oga maintain displays and lectures. These are not minor logistics. In a living tradition, learning how to wear the straw, speak at the doorway and be welcomed inside is the knowledge being passed on.
Original editorial illustration emphasizing hospitality within the ritual; it does not portray a real family or visit.
A strange tradition with a very human job
Namahage has all the visual ingredients of a ghost story: winter darkness, huge masks, straw and a booming entrance. Its actual purpose is more intimate. It gives a community a way to gather moral advice, hospitality, family transitions and hopes for a good year into one memorable visit.
That is the odd genius of it. The most unusual person at the door is not an intruder at all. He is a neighbor carrying a role the village has agreed to preserve.
All artwork in this article is an editorial illustration generated for WeirdNews.org. It is not archival evidence or a reconstruction of a particular postal station.
Long before a message could disappear into a screen and arrive on another continent, some American letters took a more theatrical route: they were sealed into metal cylinders and shot beneath city streets by air pressure.
In the late 19th and early 20th centuries, pneumatic mail networks linked post offices in several crowded U.S. cities. To a person feeding a canister into a hatch, the apparatus must have seemed half post office and half submarine. To the postal service, it was a practical answer to a very ordinary problem: getting mail across a traffic-clogged city quickly.
A letter-sized ride through the underworld
The first U.S. pneumatic mail service began in Philadelphia in 1893, according to the Smithsonian’s National Postal Museum. Boston, Brooklyn, New York, Chicago, and St. Louis followed. By 1915, those six cities had laid more than 56 miles of pneumatic tube beneath their streets.
The system did not transmit a message the way a telegraph did. It moved the message itself. Clerks packed letters into a cylindrical carrier, loaded it into an airtight tube, and used compressed air to push it along. Depending on its direction, a carrier could also be drawn through by suction. The National Postal Museum says canisters could hold up to 600 letters and commonly traveled at about 35 miles per hour.
An editorial illustration of the basic idea: a sealed carrier, a tube, and air pressure. The real systems varied by city and installation.
That speed mattered. A National Postal Museum account notes that a New York route that could take a mail wagon 40 minutes could be covered by tube in about seven. In a city where the last mile might be just a few blocks but traffic could be punishing, the tubes made an invisible shortcut.
New York’s hidden postal machinery
New York embraced the idea most enthusiastically. Its service began in 1897, and a line across the Brooklyn Bridge connected Brooklyn and Manhattan the following year. The museum says the city eventually had 27 miles of pneumatic tube. The system moved mail between postal facilities and railroad terminals, not directly from one household to another; a letter still needed people at both ends.
That human detail is what keeps the story from becoming a Victorian version of email. Postal clerks worked around the clock in basement facilities, filling carriers, sending them, opening them at the other end, and putting their contents back into the larger flow of sorting and delivery. The tube was fast, but it was never magic. It was a carefully maintained handoff between workers and machinery.
Editorial illustration, not a depiction of a specific historical facility.
Ingenious, expensive, and stubbornly fixed in place
The tubes had a built-in flaw: once they were underground, they had to share the underground with everything else. The National Postal Museum notes that existing sewage and gas lines limited where tubes could go and how large they could be. Water-table conditions created another challenge; parts of Philadelphia’s system had to be buried well below the water level.
They were also costly. Private companies built the systems and rented them to the Post Office Department. The same feature that made the tubes wonderfully fast—their fixed physical route—made them awkward as cities and postal patterns changed. A truck could be sent somewhere new tomorrow. A steel tube under a street could not.
During World War I, the Post Office Department suspended the service to conserve funds. After the war, it returned in New York and Boston, but the age of the tubes was closing. Larger mail volumes, changing streets, and more flexible motor vehicles gradually made the networks harder to justify. Boston’s service ended in 1950; New York’s ended in 1953 and was not restored.
The strange part is that the idea never really vanished
The citywide postal networks are gone, but their logic is familiar. Bank drive-throughs, hospitals, pharmacies, and big-box stores still use pneumatic dispatch systems for documents, cash, samples, and small supplies. They are smaller and less romantic than a 27-mile network under New York, but the satisfying premise is identical: put a small thing in a capsule, give the air a job, and let the walls do the rest.
A Library of Congress photograph labeled N.Y. Post Office — Pneumatic Tube preserves one visual trace of that era. It is a useful reminder that the story is not a retrofuturist fantasy. For decades, parts of America’s postal system really did hum underfoot.
Editor’s note: The images in this article are original editorial illustrations. They are not photographs of the University of Queensland apparatus or scientific evidence.
In a glass funnel at the University of Queensland, a black substance that looks solid has been conducting one of science’s slowest demonstrations since 1927. It can feel hard and even shatter under a hammer, yet given enough time it flows.
The substance is pitch, an extremely viscous fluid. In this experiment, “extremely” means that only nine drops have completed their descent in nearly a century. A tenth is still taking shape.
A lecture demonstration with no convenient ending
University of Queensland physics professor Thomas Parnell set up the apparatus in 1927. According to the university’s Physics Museum, he heated pitch, poured it into a sealed glass funnel, and then let it settle for three years. The funnel’s stem was cut in 1930, giving gravity a very long assignment.
The first drop took roughly eight years to fall. For the first several decades, another drop arrived about every seven to nine years. The eighth and ninth took longer, about 13 years apiece, according to a University of Queensland account of the ninth drop.
Original editorial illustration showing the idea of a drop changing over time; not a measured diagram or photograph.
Why something hard can still flow
Viscosity is a fluid’s resistance to flowing. Water has relatively low viscosity; honey resists flow more strongly. The pitch in Parnell’s funnel sits at an almost comical extreme. The Physics Museum says estimates put it at about 100 billion times more viscous than water.
That number is an estimate for this sample and setup, not a universal constant for every material called pitch. Temperature matters greatly. The apparatus was created as a teaching demonstration rather than a tightly climate-controlled experiment. University records note that seasonal temperature changes affect the flow, and air-conditioning installed near the display helped slow later drops.
The experiment therefore makes a useful point without requiring pitch to fit neatly into everyday categories. On a human timescale, it seems solid. On the experiment’s timescale, its continuing deformation is unmistakable.
The drop that kept dodging its audience
The long waits created a second, accidental experiment: could anyone catch a drop at the decisive moment?
Former custodian John Mainstone repeatedly came close. University accounts say he missed the 1977 drop by a day and the 1988 drop after briefly leaving the display. In 2000, a webcam was watching—but a short power failure covered the crucial interval.
The ninth behaved differently. Instead of cleanly breaking free, it slowly touched the older drop beneath it in April 2014. The university used time-lapse images to study the contact, then replaced the crowded beaker so the experiment could continue. That intervention is one reason a simple drop count hides a messier history: “falling” has not always meant a dramatic, free-falling plop.
A record with an important qualifier
Guinness World Records recognizes the Queensland Pitch Drop Experiment as the longest-running laboratory experiment. That wording is best treated as a specific record title, not a claim that no older scientific apparatus or long-term observation exists anywhere. The University of Queensland also describes the piece as an ongoing teaching experiment and museum object.
The funnel still contains enough pitch for future drops. Predictions are necessarily loose because temperature, the changing amount of material, and the geometry of each forming drop affect the timing. The honest answer to “When will the tenth fall?” is the answer this apparatus has always demanded: keep watching.
What the experiment actually proves
Pitch can behave like a hard solid during a quick test and still flow under sustained stress.
Our everyday labels depend partly on the timescale of observation.
A simple demonstration can become scientifically interesting in new ways when its surroundings and maintenance history affect the result.
It does not prove the common myth that old window glass sags because glass is a slow liquid. The pitch in this apparatus was selected precisely because it flows on a timescale that can be observed across years. The experiment’s weirdness is real enough without borrowing claims from unrelated materials.
In a glass case at the University of Oxford, a metal ball no bigger than a pea keeps making the same short trip. It touches one brass bell, crosses a narrow gap, touches a second bell, and heads back again. The mechanism was set up in 1840. Oxford’s Department of Physics says it still oscillates about twice each second.
The apparatus is usually called the Oxford Electric Bell or the Clarendon Dry Pile. Its longevity sounds like a perpetual-motion story, but it is nothing of the kind. The bell is an unusually frugal electrical machine: it uses high voltage, an extraordinarily small current, and a simple electrostatic shuttle to spend its stored energy almost grudgingly.
Two batteries, two bells, one restless ball
The visible arrangement is beautifully spare. Two tall dry-pile batteries stand side by side. Each connects to a brass bell, giving the bells opposite electrical charges. A metal sphere about four millimeters across hangs between them on a thread.
When the sphere touches one bell, it picks up that bell’s charge. Like charges repel, so the newly charged sphere is pushed away from the bell it has just touched. At the same time, it is attracted toward the oppositely charged bell. On contact with the second bell, its charge changes and the process reverses. The ball becomes a tiny courier, carrying charge back and forth while tapping the bells on every crossing.
How the shuttle works: each contact changes the sphere’s charge, sending it toward the opposite bell. Original explanatory illustration; not a photograph or scientific record.
A 2025 demonstration published in The Physics Teacher reproduced the principle with modern, readily available materials. The authors describe the motion as an electrostatic effect driven by charge on the battery terminals. Their replica helps confirm that the famous Oxford apparatus does not need a conventional motor or a large continuous current to keep the shuttle moving.
The trick is high voltage and almost no current
Most battery-powered devices draw enough current to do conspicuous work: heating a wire, turning a motor, lighting a screen. The Oxford bell has a much smaller assignment. Its clapper is light, the distance is short, and each trip transfers only a minuscule amount of charge.
In a history of Oxford’s Clarendon Laboratory, physicist A. J. Croft described the apparatus as operating at roughly 2,000 volts but only about one nanoampere. Those figures are estimates rather than a promise about its present output, but they capture the central point. Voltage measures electrical potential; current measures the flow of charge. The bell has plenty of the first and vanishingly little of the second.
That tiny current is why “still running” does not mean “free energy.” The batteries are continually surrendering stored chemical energy, just at a rate so low that the process has outlasted generations of laboratory equipment. Oxford estimates that the bells have been struck on the order of 10 billion times. The sound is muffled by the display case, so visitors see the motion rather than hear a 186-year concert.
What is inside the dry piles?
This is where documentation ends and informed reconstruction begins.
Oxford says the two battery columns are covered with an insulating layer of sulfur. Their exact internal construction remains unknown. Similar early nineteenth-century “dry piles” were assembled from large numbers of very thin metal-and-paper layers. The university’s exhibit notes that the Oxford piles may contain alternating foil and paper coated with manganese dioxide. Croft favored a related historical recipe involving roughly 2,000 pairs of zinc and “silvered” paper discs.
Those are plausible comparisons, not an inventory of the sealed Oxford batteries. The device cannot be opened without ending—or at least radically altering—the very long-running performance people want to understand. Its survival has therefore protected its mystery.
A conceptual dry-pile cutaway based on period designs. The exact materials and layer arrangement inside Oxford’s sealed batteries are not known. Original explanatory illustration.
The word dry can also mislead. Croft argued that the pile would not work if it were absolutely moisture-free. In his account, the sulfur coating helped retain a small amount of water needed for the electrolyte while limiting leakage and unwanted chemical reactions. It is a sealed, slow electrochemical system—not a stack of perfectly dry inert wafers.
A three-year prediction that missed by two centuries
The apparatus carries a handwritten note saying it was “set up in 1840,” although Oxford records that it may have been constructed about 15 years earlier. Croft’s history reproduces an 1841 letter to Oxford physicist Robert Walker from instrument maker Francis Watkins. Watkins doubted that the residual power could keep the clapper moving for more than three or four years.
That was a reasonable expectation based on the instruments of the period. It was also spectacularly wrong. The sulfur seal, the enormous number of thin battery layers, the microscopic current draw, and the light electrostatic shuttle combined into a machine whose useful lifetime was far outside ordinary experience.
Why it is not perpetual motion
Oxford explicitly rejects the popular “perpetual motion” label. The bell has an energy source: its dry-pile batteries. Every swing dissipates a little energy through electrical resistance, air drag, sound, deformation, and friction at the suspension. Eventually the chemical potential will become too weak to move the clapper, or a mechanical part will fail first.
The uncertainty is not whether it will stop, but how and when. Croft thought the clapper might wear out before the electrochemical energy was exhausted. That, too, is a hypothesis. The sealed apparatus has made patience part of the experiment.
The weird lesson in the glass case
The Oxford Electric Bell lasts because it does almost nothing, extremely efficiently, for an extremely long time. It turns a tiny flow of charge into a visible rhythm and makes the difference between voltage, current, power, and energy impossible to ignore.
Its greatest mystery is also carefully bounded. The operation is understood. The broad family of battery technology is understood. What remains uncertain is the exact recipe inside two sealed nineteenth-century columns and which component will finally determine the ending. Until then, the little sphere keeps crossing the gap.
Across the dry grasslands along the eastern edge of the Namib Desert, bare circles repeat across the landscape with an order that looks almost designed. Many have a rim of taller grass. In dense fields, the gaps can settle into a roughly hexagonal spacing, as though the plants—or something beneath them—had agreed on personal boundaries.
They are called fairy circles, but the name is folklore, not an explanation. The circles are real natural features, and scientists have spent decades testing what makes them. The durable weirdness is that the leading explanations still point in different directions.
Two leading ideas involve sand termites and competition among grasses for scarce water. This is an original editorial illustration, not a field image or scientific reconstruction.
What is documented
The circles occur in arid, sandy grasslands in southern Africa. A 2013 field and remote-sensing study described millions of barren patches, commonly a few meters across, often surrounded by taller perennial grasses. The researchers also found that soil moisture inside a bare circle decreased toward its grassy edge. That pattern is consistent with roots around the perimeter drawing on water stored beneath the center.
The circles are not simply dead stains. They can appear, persist and eventually fade as vegetation returns. Their repeated spacing is also nonrandom. Any successful explanation therefore has to account for several things at once: why plants disappear from the middle, why taller grass often grows around the rim, and why neighboring circles keep such regular distances.
Explanation one: termites as ecosystem engineers
In a Science paper published in 2013, ecologist Norbert Jürgens argued that the sand termite Psammotermes allocerus creates the circles by removing short-lived vegetation after rain. With fewer plants transpiring from the center, water can remain in the sandy soil. The stored moisture can then support the perennial grass ring and help a termite colony survive long droughts.
Under this interpretation, each bare patch is less a scar than a water-harvesting ecosystem engineered from below. Competition between neighboring termite colonies could also help explain the broad spacing between circles.
That is a scientific hypothesis backed by field observations, not a universally accepted verdict. Other researchers have questioned whether the presence of termites proves they initiate every circle, and whether termite activity alone explains the landscape-scale geometry.
Explanation two: thirsty grass organizes itself
A competing body of research treats the circles as an emergent pattern produced by plants competing for extremely limited water. In this view, grasses close to an established clump benefit from local conditions, while their roots pull water from farther away. The push and pull between short-range cooperation and longer-range competition can generate evenly spaced vegetation patterns without a planner.
The 2013 study by Michael Cramer and Nichole Barger found that circle occurrence and geometry tracked environmental conditions such as water availability and soil properties. A later field study, published in 2022, followed rainfall across Namib sites and reported that new grasses inside circles died from water stress without the root damage expected from termite feeding. Its authors concluded that plant water competition, rather than termite herbivory, caused the observed grass death at their study sites.
Circles can emerge, persist and fade as grassland conditions change. Original editorial illustration; not satellite imagery or scientific evidence.
A clue the circles are not one giant grass plant
Another possible explanation once proposed that the grass rim could be a single clone expanding outward while dying in the center, similar to some familiar rings of vegetation. Genetic testing published in Communications Biology in 2020 did not support that idea for the Namib circles it sampled. The grasses around almost every tested circle belonged to more than one genetically distinct individual.
That result removed one tidy answer. It also sharpened the real question: how do many separate organisms generate a pattern that lasts much longer than the individual grass plants marking its edge?
Could both mechanisms matter?
Termites and plant competition are not necessarily mutually exclusive at every scale. A 2017 modeling study in Nature found that interactions between vegetation feedbacks and territorial social-insect colonies could reproduce multiple features seen in patterned drylands. Its broader conclusion was that more than one self-organizing mechanism may operate together.
That does not mean “both” is the final answer for every Namibian circle. Different studies examine different sites, rainfall events, time spans and measurements. Evidence that explains freshly dying grass may not by itself explain decades of circle persistence; finding termites beneath a circle does not automatically prove they started it.
The honest answer is more interesting than a premature solution. Namibia’s fairy circles are documented ecology wearing a supernatural nickname. Scientists can measure their soil, map their spacing, identify their grasses and inspect the creatures below—yet the full chain of cause and effect remains under debate.
