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Wednesday, May 25, 2022

The Tyranny Of Time

The clock is a useful social tool, but it is also deeply political. It benefits some, marginalizes others and blinds us from a true understanding of our own bodies and the world around us.


Marcos Guinoza for Noema Magazine

BY JOE ZADEH
JUNE 3, 2021
Joe Zadeh is a writer based in Newcastle.

On a damp and cloudy afternoon on February 15, 1894, a man walked through Greenwich Park in East London. His name was Martial Bourdin — French, 26 years of age, with slicked-back dark hair and a mustache. He wandered up the zigzagged path that led to the Royal Observatory, which just 10 years earlier had been established as the symbolic and scientific center of globally standardized clock time — Greenwich Mean Time — as well as the British Empire. In his left hand, Bourdin carried a bomb: a brown paper bag containing a metal case full of explosives. As he got closer to his target, he primed it with a bottle of sulfuric acid. But then, as he stood facing the Observatory, it exploded in his hands.

The detonation was sharp enough to get the attention of two workers inside. Rushing out, they saw a park warden and some schoolboys running towards a crouched figure on the ground. Bourdin was moaning and screaming, his legs were shattered, one arm was blown off and there was a hole in his stomach. He said nothing about his identity or his motives as he was carried to a nearby hospital, where he died 30 minutes later.

Nobody knows for sure what Bourdin was trying to do that day. An investigation showed that he was closely linked to anarchist groups. Numerous theories circulated: that he was testing the bomb in the park for a future attack on a public place or was delivering it to someone else. But because he had primed the device and was walking the zigzagged path, many people — including the Home Office explosives expert, Vivian Dering Majendie, and the novelist Joseph Conrad, who loosely based his book “The Secret Agent” on the event — suspected that Bourdin had wanted to attack the Observatory.

Bourdin, so the story goes, was trying to bomb clock time, as a symbolic revolutionary act or under a naive pretense that it may actually disrupt the global measurement of time. He wasn’t the only one to attack clocks during this period: In Paris, rebels simultaneously destroyed public clocks across the city, and in Bombay, protestors shattered the famous Crawford Market clock with gunfire.

Around the world, people were angry about time.


The destruction of clocks seems outlandish now. Contemporary society is obsessed with time — it is the most used noun in the English language. Since clocks with dials and hands first appeared on church towers and town halls, we have been bringing them closer toward us: into our workplaces and schools, our homes, onto our wrists and finally into the phone, laptop and television screens that we stare at for hours each day.

We discipline our lives by the time on the clock. Our working lives and wages are determined by it, and often our “free time” is rigidly managed by it too. Broadly speaking, even our bodily functions are regulated by the clock: We usually eat our meals at appropriate clock times as opposed to whenever we are hungry, go to sleep at appropriate clock times as opposed to whenever we are tired and attribute more significance to the arresting tones of a clock alarm than the apparent rising of the sun at the center of our solar system. The fact that there is a strange shame in eating lunch before noon is a testament to the ways in which we have internalized the logic of the clock. We are “time-binding” animals, as the American economist and social theorist Jeremy Rifkin put it in his 1987 book, “Time Wars.” “All of our perceptions of self and world are mediated by the way we imagine, explain, use and implement time.”


“The clock does not measure time; it produces it.”

During the COVID-19 pandemic, many people have reported that their experience of time has become warped and weird. Being trapped at home or laboring unusually excessive hours makes days feel like hours and hours like minutes, while some months feel endless and others pass almost without notice. It seems the time in our clocks and the time in our minds have drifted apart.

Academic studies have explored how our emotions (such as pandemic-induced grief and anxiety) could be distorting our perception of time. Or maybe it is just because we aren’t moving around and experiencing much change. After all, time is change, as Aristotle thought — what is changeless is timeless. But rarely does the clock itself come into question — the very thing we use to measure time, the drumbeat against which we define “weird” distortions. The clock continues to log its rigid seconds, minutes and hours, utterly unaware of the global crisis that is taking place. It is stable, correct, neutral and absolute.

But what makes us wrong and the clock right? “For most people, the last class they had devoted to clocks and time was early in primary school,” Kevin Birth, a professor of anthropology at the City University of New York who has been studying clocks for more than 30 years, told me recently. “There’s this thing that is central to our entire society, that’s built into all of our electronics. And we’re wandering around with an early primary school level of knowledge about it.”

Birth is one of a growing chorus of philosophers, social scientists, authors and artists who, for various reasons, are arguing that we need to urgently reassess our relationship with the clock. The clock, they say, does not measure time; it produces it. “Coordinated time is a mathematical construct, not the measure of a specific phenomenon,” Birth wrote in his book “Objects of Time.” That mathematical construct has been shaped over centuries by science, yes, but also power, religion, capitalism and colonialism. The clock is extremely useful as a social tool that helps us coordinate ourselves around the things we care about, but it is also deeply politically charged. And like anything political, it benefits some, marginalizes others and blinds us from a true understanding of what is really going on.

The more we synchronize ourselves with the time in clocks, the more we fall out of sync with our own bodies and the world around us. Borrowing a term from the environmentalist Bill McKibben, Michelle Bastian, a senior lecturer at Edinburgh University and editor of the academic journal Time & Society, has argued that clocks have made us “fatally confused” about the nature of time. In the natural world, the movement of “hours” or “weeks” do not matter. Thus the build-up of greenhouse gases in the atmosphere, the sudden extinction of species that have lived on Earth for millions of years, the rapid spread of viruses, the pollution of our soil and water — the true impact of all of this is beyond our realm of understanding because of our devotion to a scale of time and activity relevant to nothing except humans.

During an era in which social constructs like race, gender and sexuality are being challenged and dismantled, the true nature of clock time has somehow escaped the attention of wider society. Like money, the clock has come to be seen as the thing it was only supposed to represent: The clock has become time itself.

Clock time is not what most people think it is. It is not a transparent reflection of some sort of true and absolute time that scientists are monitoring. It was created, and it is frequently altered and adjusted to fit social and political purposes. Daylight savings, for instance, is an arbitrary thing we made up. So is the seven-day week. “People tend to think that somewhere there is some master clock, like the rod of platinum in the Bureau of Weights and Measures, that is the ‘uber clock,’” Birth told me. “There isn’t. It’s calculated. There is no clock on Earth that gives the correct time.”

What’s usually taught in Western schools is that the time in our clocks (and by extension, our calendars) is determined by the rotation of the Earth, and thus the movement of the sun across our sky. The Earth, we learn, completes an orbit of the sun in 365 days, which determines the length of our year, and it rotates on its axis once every 24 hours, which determines our day. Thus, an hour is 1/24 of this rotation, a minute is 1/60 of an hour and a second is 1/60 of a minute.

None of this is true. The Earth is not a perfect sphere with perfect movement; it’s a lumpy round mass that is squashed at both poles and wobbles. It does not rotate in exactly 24 hours each day or orbit the sun in exactly 365 days each year. It just kinda does. Perfection is a manmade concept; nature is irregular.

For thousands of years, most human societies have accepted and moved in harmony with the irregular rhythms of nature, using the sun, moon and stars to understand the passage of time. One of the most common early timekeeping devices, sundials (or shadow clocks), reflected this: The hours of the day were not of fixed 60-minute lengths, but variable. Hours were longer or shorter as they waxed and waned in accordance with the Earth’s orbit, making the days feel shorter in the winter and longer in the summer. These clocks didn’t determine the hours, minutes and seconds themselves, they simply mirrored their surrounding environment and told you where you were within the cyclical rhythms of nature.

But since the 14th century, we’ve gradually been turning our backs on nature and calculating our sense of time via manmade devices. It began in the monasteries of Northern and Central Europe, where pious monks built crude iron objects that unreliably but automatically struck intervals to help bellringers keep track of canonical hours of prayer. Like any machine, the logic of the mechanical clock was based upon regularity, the rigid ticking of an escapement. It brought with it a whole different way to view time, not as a rhythm determined by a combination of various observed natural phenomena, but as a homogenous series of perfectly identical intervals provided by one source.

The religious fervor for rationing time and disciplining one’s life around it led the American historian Lewis Mumford to describe the Benedictine monks as “perhaps the original founders of modern capitalism.” It is one of the great ironies of Christianity that it set the wheels in motion for an ever-unfolding mania of scientific accuracy and precision around timekeeping that would eventually secularize time in the West and divorce God, the original clockmaker, from the picture entirely.

“The more we synchronize ourselves with the time in clocks, the more we fall out of sync with our own bodies and the world around us.”

By 1656, the Dutch scientist Christiaan Huygens had invented the first pendulum clock, which delivered homogenous and regular slices of a small unit of time: seconds. Unlike the inconsistent mechanical clocks of before, the clock time of pendulums was nearly perfect. In that same century, the British astronomer John Flamsteed and others developed “mean time,” an average calculation of the Earth’s rotation. Science had found a way around the Earth’s wobbly eccentricities, producing a quantifiable and consistent unit that became known as Greenwich Mean Time.

Standardized time became vital for seafarers and irresistible to corporate interests, such was the ease it could offer trade, transport and electric communication. But it took longer to colonize the minds of the general public. During the British “railway mania” of the 1840s, around 6,000 miles of railway lines were constructed across the country. Investors (including Charles Darwin, John Stuart Mill and the Brontë sisters) climbed over each other to acquire rail company shares in a frenzy of freewheeling capitalism that caused one of the biggest economic bubbles in British history. Companies like Great Western Railway and Midland Railway began to enforce Greenwich Mean Time inside their stations and on their trains to make timetables run efficiently.

Every city, town and village in Britain used to set its clocks to its own local solar time, which gave each locale a palpable sense of identity, time and place. If you lived in Newcastle, noon was when the sun was highest, no matter what the time in London was. But as the railways brought standardized timetables, local times were demonized and swept aside. By 1855, nearly all public clocks were set to GMT, or “London time,” and the country became one time zone.

The rebellious city of Bristol was one of the last to agree to standardized time: The main town clock on the Corn Exchange building kept a third hand to denote “Bristol time” for the local population who refused to adjust. It remains there to this day.

“Railway time” arrived in America too, splitting the country into four distinct time zones and causing protests to flare nationwide. The Boston Evening Transcript demanded, “Let us keep our own noon,” and The Cincinnati Commercial Gazette wrote, “Let the people of Cincinnati stick to the truth as it is written by the sun, moon and stars.”

The 1884 International Meridian Conference is often framed as the moment clock time took over the world. The globe was sliced into 24 time zones declaring different clock times, all synchronized to the time of the most powerful empire, the British and their GMT. Nobody would decipher time from nature anymore — they would be told what time it was by a central authority. The author Clark Blaise has argued that once this was implemented, “It didn’t matter what the sun proclaimed at all. ‘Natural time’ was dead.”

“Clock time is not what most people think it is. It was created, and it is frequently altered and adjusted to fit social and political purposes.”

In reality, this process had already been taking place throughout the 1800s as a result of European colonialism, imperialism and oppression. Colonialism was not just a conquest of land, and therefore space, but also a conquest of time. From South Asia to Africa to Oceania, imperialists assaulted alternative forms of timekeeping. They saw any region without European-style clocks, watches and church bells as a land without time.

“European global expansion in commerce, transport and communication was paralleled by, and premised upon, control over the manner in which societies abroad related to time,” the Australian historian Giordano Nanni wrote in his book, “The Colonization of Time.” “The project to incorporate the globe within a matrix of hours, minutes and seconds demands recognition as one of the most significant manifestations of Europe’s universalizing will.” In short, if the East India Company was the physical embodiment of British colonialism overseas, GMT was the metaphysical embodiment.

The Western separation of clock time from the rhythms of nature helped imperialists establish superiority over other cultures. When British colonizers swept into southeastern Australia in search of gold, they depicted the timekeeping practices of the Indigenous societies they encountered as irregular and unpredictable in contrast to the rational and linear nature of the clock. This was despite the fact that Indigenous societies in the region had advanced forms of timekeeping based on the moon, stars, rains, the blossoming of certain trees and shrubs and the flowing of tides, which they used to determine the availability of food and resources, distance and calendar dates.

“Nineteenth-century Europeans generally conceived of such closeness to nature as calling into question the very humanity of those who practiced it,” Nanni wrote. “This was partly determined by the fact that Enlightenment values and ideals had come to associate the idea of ‘humanness’ with man’s transcendence and domination over nature; and its corresponding opposite — savagery — as a mode of life that existed ‘closer to nature.’”

In Melbourne, churches and railway stations grew quickly on the horizon, bringing with them the hands, faces, bells and general cacophony of clock time. By 1861, a time ball was installed in the Williamstown Lighthouse and Melbourne was officially synchronized to Greenwich Mean Time. British colonizers attempted to integrate Indigenous peoples into their labor force with unsatisfactory results due to their unwillingness to sacrifice their own form of timekeeping. They did not believe in “meaningless toil” and “obedience to the clock,” wrote the Australian sociologist Mike Donaldson. “To them, time was not a tyrant.”

In some parts of Australia, the Indigenous resistance to Western clock time continued defiantly. In 1977, in the tiny town of Pukatja (then known as Ernabella) a giant, revolving, electronically operated clock was constructed near the town center for the local Pitjantjatjara people to coordinate their lives around. A decade later, a white construction worker at a town council meeting noted that the clock had been broken for months. Nobody had noticed, because nobody looked at it.

“Nineteenth-century Europeans generally conceived of such closeness to nature as calling into question the very humanity of those who practiced it.”
— Giordano Nanni

The movement toward standardized time reached its apex in the 1950s, when atomic clocks were judged to be better timekeepers than the Earth itself. The second, as a unit of time, was redefined not as a fraction of the Earth’s orbit around the sun, but as a specific number of oscillations of cesium atoms inside an atomic clock.

“When you look at precision timekeeping, it’s all about insulating and isolating these clocks from responding to anything that goes on around them,” Bastian told me via a video call from her home in Edinburgh. A poster with the words “A clock that falls asleep” hung on the wall behind her. “You have to keep them separate from temperature, fluctuations, humidity, even quantum gravity effects. They can’t respond to anything.”

Over 400 atomic clocks in laboratories around the world count time using the atomic second as their standard. A weighted average of these times is used to create International Atomic Time, which forms the basis of Coordinated Universal Time (UTC). UTC isn’t completely non-responsive. Every few years, a leap second is added to it to keep it reasonably close to the rotations of the Earth. But in 2023, at the World Radiocommunication Conference, nations from around the world will discuss whether it is in our best interest to abolish leap seconds and permanently unmoor ourselves from the sun and moon in favor of time we manufacture ourselves.

“It’s easier to imagine the end of the world than the end of capitalism,” wrote the literary critic Fredric Jameson. One of the hardest elements to imagine is what capitalism has done to our perception of time via clocks. It now seems embedded into our very psychology to view time as a commodity that can be spent or wasted.

Capitalism did not create clock time or vice versa, but the scientific and religious division of time into identical units established a useful infrastructure for capitalism to coordinate the exploitation and conversion of bodies, labor and goods into value. Clock time, the British sociologist Barbara Adam has argued, connected time to money. “Time could become commodified, compressed and controlled,” she wrote in her book “Time.” “These economic practices could then be globalized and imposed as the norm the world over.”

Clock time, Adam goes on, is often “taken to be not only our natural experience of time” but “the ethical measure of our very existence.” Even the most natural of processes now must be expressed in clock time in order for them to be validated.

Women in particular often find themselves at the wrong end of this arbitrary metric. Unpaid labor such as housework and childcare — which still disproportionately burdens women — seems to slip between the measurements of the clock, whereas the experience of pregnancy is very much under the scrutiny of clock time. Adam quotes a woman’s account of her birth-giving experience: “The woman in labor, forced by the intensity of the contractions to turn all her attention to them, loses her ordinary, intimate contact with clock time.” But in the hospital environment, where the natural process of childbirth has been evaluated and standardized in clock-time units, a woman is pressured to follow what Alys Einion-Waller, a professor of midwifery at Swansea University, has called a “medicalized birth script.”

“It now seems embedded into our very psychology to view time as a commodity that can be spent or wasted.”

The firsthand experience and intuition of a woman giving birth is devalued in favor of timings and measurements related to the expected length of labor stages, the spacing of contractions, the progress of cervical dilation and other observations. Language such as “failure to progress” is common when a woman doesn’t perform to the expected curve, and diversion from the clock-time framework can be used to justify medical intervention. This is one of the reasons that the home-birthing movement has recently grown in popularity.

Likewise, new parents know that the baby itself becomes their clock, and any semblance of standardized time is preposterous. But in time, of course, the baby joins the rigid temporal hierarchy of school, with non-negotiable class and mealtimes, forcing biological rhythms to adhere to socially acceptable clock time.

As Birth put it to me: “The clock helps us with things that are uniform in duration. But anything that is not uniform, anything that varies, the clock screws up. … When you try to schedule a natural process, nature doesn’t cooperate.”

In 2002, scientists watched in amazement as Larsen B, an ice shelf on the Antarctic Peninsula 55 times bigger than Manhattan — which had been stable for 10,000 years — splintered and collapsed into hundreds of shards the size of skyscrapers. A glaciologist who flew overhead told Scientific American that he could see whales swimming in water where ice a thousand feet thick had been just days earlier.

Virtually overnight, previous clock-time predictions around the mass loss of ice needed to be rewritten to acknowledge a 300% acceleration in the rate of change. In 2017, a piece of the nearby Larsen C ice shelf fell off, creating the world’s biggest iceberg — so big that maps had to be redrawn. The Intergovernmental Panel on Climate Change calls such abrupt events, which happen more often than you might think, “surprises.”

The climate crisis is a realm in which linear clock time frequently and fatally misfires. It frames the crisis as something that is measurable, quantifiable and predictable — something we can envisage in the same way as work hours, holidays, chores and projects. Warming temperatures, ocean acidification, ice melting and carbon dioxide levels in the atmosphere are constantly being translated into clock time to create tipping points, thresholds, roadmaps and sustainable development goals for us to beat or aspire to. When a “surprise” happens, time estimates crumble in the face of reality. Nature doesn’t cooperate.

It works the same way for putting limits on the amount of time we have to stop global warming. The Guardian launched a blog called “100 months to save the world” in July 2008 that used scientific research and predictions to make it “possible to estimate the length of time it will take to reach a tipping point.” That was 154 months ago. Are we 54 months into the end of the world? Perhaps. But one can’t help but wonder if the constant framing of the climate crisis in clock time deadlines, which then pass without comment, has contributed to the inability and inertia of many to comprehend the seriousness of what is actually happening.

“It’s a privilege to live by clock time alone and ignore nature’s urgent temporalities.”

“We can’t say that clock time isn’t important,” Vijay Kolinjivadi, a researcher at the University of Antwerp’s Institute of Development Policy, told me. “There’s certain times when that metric makes a lot of sense, and we should use it. For instance, you and I decided to talk at 10 a.m. There’s no way to escape that. But when we are thinking about capitalism, social crisis and ecological breakdown, it gets problematic.” Clock time, he went on, “is always geared toward production, growth and all the things that created this ecological crisis in the first place.”

One of the most affecting myths of clock time is that we all experience time at the same steady pace. We don’t. “The future is already here,” the science-fiction author William Gibson famously said in 2003, “it’s just not very evenly distributed.” And framing the climate crisis as a ticking clock with only a certain amount of time “to avoid disaster” ignores those for whom disaster has already arrived. The reality is that it’s a privilege to live by clock time alone and ignore nature’s urgent temporalities.

Every few years, the American Midwest is ravaged by floods as the Missouri River swells from intense rainfall, upending the lives of millions. When the floods came during the summer of 1993, a New York Times journalist interviewed a resident about the night he was evacuated. “He remembers everything about the night the river forced him and his wife out of the house where they had lived for 27 years — except for this. ‘I can’t tell you what day it was. … All I can tell you is that the river stage was 26 [feet] when we left.’” The headline of the article was, “They Measure Time by Feet.”

In 1992, the astrophysicist turned author Alan Lightman published a novel called “Einstein’s Dreams” in which he fictionalizes a young Albert Einstein dreaming about the multitude of ways that different interpretations of time would play out in the lives of those around him. In one dream, Einstein sees a world where time is not measured — there are “no clocks, no calendars, no definite appointments. Events are triggered by other events, not by time. A house is begun when stone and lumber arrive at the building site. The stone quarry delivers stone when the quarryman needs money. … Trains leave the station at the Bahnhofplatz when the cars are filled with passengers.” In another, time is measured, but by “the rhythms of drowsiness and sleep, the recurrence of hunger, the menstrual cycles of women, the duration of loneliness.”

Recently, there have been many attempts in both art and literature to reimagine the clock and the role it plays in our lives. At the end of 2020, the artist David Horvitz exhibited a selection of clocks he had created, which included one that was synchronized to a heartbeat. Another artist, Scott Thrift, has developed a clock called “Today,” which simplifies the passage of time into dawn, noon, dusk and midnight as opposed to seconds, minutes and hours. It moves at half the speed of a regular clock, making one full rotation in a day.

Bastian herself has proposed clocks that are more responsive to the temporalities of the climate crisis, like a clock synchronized with the population levels of endangered sea turtles, an animal that has lived in the Pacific Ocean for 150 million years but now faces extinction due to temperature changes. These and other proposals all have the same idea at their core: There are more ways to arrange and synchronize ourselves with the world around us than the abstract clock time we hold so dear.

“They have been trapped by their own inventiveness and audacity. And they must pay with their lives.”
— Alan Lightman

Clock time may have colonized the planet, but it did not completely destroy alternative traditions of timekeeping. Certain religions maintain a connection to time that is rooted in nature, like salat in Islam and zmanim in Judaism, in which prayer times are defined by natural phenomena like dawn, dusk and the positioning of stars. The timing of these events may be converted into clock time, but they are not determined by clocks.

In places where globally standardized time is enforced, some still rebel, like in China, where the entire country is under one time zone, BST (Beijing Standard Time). In Xinjiang, nearly 2,000 miles west of Beijing, where the sun sometimes sets at midnight according to BST, many Uighur communities use their own form of local solar time.

And Indigenous communities around the world still use ecological calendars, which keep time through observations of seasonal changes. Native American tribes around Lake Oneida, for example, recognize a certain flower blooming as the time to start plowing and setting traps for animals emerging from hibernation. As opposed to a standardized clock and calendar format, these ecological calendars, by their very nature, reflect and respond to an ever-changing climate.

In one of the last dreams in Lightman’s book, Einstein imagines a world not too dissimilar from our own, where one “Great Clock” determines the time for everyone. Every day, tens of thousands of people line up outside the “Temple of Time” where the Great Clock resides, waiting their turn to enter and bow before it. “They stand quietly,” wrote Lightman, “but secretly they seethe with their anger. For they must watch measured that which should not be measured. They must watch the precise passage of minutes and decades. They have been trapped by their own inventiveness and audacity. And they must pay with their lives.



Tuesday, January 17, 2023

How close to midnight is humanity? 2023 Doomsday Clock announcement could warn of nuclear disaster

Each January for the past 75 years, the Bulletin of the Atomic Scientists has published a new Doomsday Clock, suggesting just how close – or far – humanity is from the brink.

The next edition will be revealed Jan. 24 at 10 a.m. EST. It's the first update to the clock since Russia's invasion of Ukraine renewed fears of global nuclear war.

Historically, the clock has measured the danger of nuclear disaster, but that's not the only apocalyptic scenario being considered. Climate change, bioterrorism, artificial intelligence and the damage done by mis- and disinformation also have been included in the mix of possible cataclysms.

Each year, the 22 members of the Science and Security Board are asked two questions:

  • Is humanity safer or at greater risk this year than last year?

  • Is humanity safer or at greater risk compared to the 76 years the clock has been set?

Here's what to know about the 2023 Doomsday Clock:

How did the Doomsday Clock start?

In 1945, on the anniversary of the bombing of Pearl Harbor, scientists who had worked on the Manhattan Project that built the world's first atomic bombs began publishing a mimeographed newsletter called The Bulletin of the Atomic Scientists.

Two years later, as those same scientists contemplated a world in which two atomic weapons had been used in Japan, they gathered to discuss the threat to humanity posed by nuclear war.

"They were worried the public wasn't really aware of how close we were to the end of life as we knew it," said Rachel Bronson, president and CEO of the Bulletin.

Martyl Langsdorf, an artist and wife of Manhattan project physicist Alexander Langsdorf Jr., came up with the idea of a clock showing just how close things were.

It came to be called the Doomsday Clock.

"It gave the sense that if we did nothing, it would tick on toward midnight and we could experience the apocalypse," Bronson said.

The mushroom cloud from Ivy Mike (codename given to the test) rises above the Pacific Ocean over the Enewetak Atoll in the Marshall Islands on November 1, 1952 at 7:15 am (local time). It was the world's first test of a full-scale thermonuclear device, in which part of the explosive yield comes from nuclear fusion.

Where does the Doomsday Clock stand now?

For the past two years the Doomsday Clock has stood at 100 seconds to midnight, closer to destruction than at any point since it was created in 1947.

What does midnight represent on the Doomsday Clock?

Midnight on the Doomsday Clock represents how close humans are to bringing about civilization-ending catastrophe because of the unleashing of human-caused perils either by nuclear disaster, climate change or other cataclysms.

Who decides where the Doomsday Clock is set?

The Doomsday Clock is set each year by the 22 members of the Bulletin's Science and Security Board in consultation with its Board of Sponsors, which includes 11 Nobel laureates.

Why does the Doomsday Clock exist?

At its heart, the bulletin's founders were asking how well humanity was managing the "dangerous Pandora's box made possible by modern science," Bronson said.

Though technology makes possible amazing and wonderful things, it can also pose risks. In 1947 the biggest of those was nuclear war. Since then the bulletin has added others, including climate change, bioterrorism, artificial intelligence and the damage done by mis- and disinformation.

Why is the Doomsday Clock so prominent?

Over the years the clock has been referenced by the White House, the Kremlin and the leadership of many other nations. Robert Oppenheimer and Albert Einstein were on the bulletin's Board of Sponsors, and John F. Kennedy and Richard Nixon wrote pieces for the magazine.

Though not everyone agrees with the clock's settings, it is generally respected for the questions it asks and for its science-based stance.

Does the Doomsday Clock always go forward?

The setting of the clock has jumped forward and back over the past 75 years, depending on world events.

The furthest from midnight it has ever been was in 1991, when it was set at 17 minutes to midnight after the U.S. and the Soviet Union signed the first Strategic Arms Reduction Treaty, followed by the dissolution of the USSR.

"People would go to sleep every night worried about were they going to wake up," said Daniel Holz, a professor of physics at the University of Chicago and co-chair of the Bulletin's Science and Security Board. "That threat was definitely reduced at the end of the Cold War."

The most pessimistic years have been 2021 and 2022, when it was set at 100 seconds to midnight, in part because of global nuclear and political tensions, COVID-19, climate change and the threat of biological weapons.

The first clock, announced in 1947, was set at 7 minutes to midnight.

What will the Doomsday Clock be set to on Jan. 24, 2023?

The Doomsday Clock will be reset Jan. 24 at 10 a.m. EST in an announcement that will be livestreamed on the bulletin's website.

Exactly what time the scientists who make up the board have chosen is a closely held secret. But one hint is this: For the first time, the statement is being translated into Russian and Ukrainian.

This article originally appeared on USA TODAY: 2023 Doomsday Clock announcement to warn of nuclear disaster

Tuesday, July 19, 2005

Tyrant Time-Tempus Fug'it

The creation of the clock is a defining moment in the history of capitalism. It allowed for the regimintation of work, and for the development of industrialization as clock works were applied to steam power.

The proletariat was created to work by the time of the clock. Prior to that the artisan and farmer who worked by hours of daylight. With the advent of the factory system in the late 18th Century, workers could be forced to work in the darkness with the help of kerosene lamps, and by the use of clocks to tell the time of the working day. Literally the working day as we know it today began back then. (EP Thompson, Past and Present (1967). Time, Work-Discipline, and Industrial Capitalism )

For generations, there has been no better illustration of the collective idiocy of the crowd than the story of the English calendar riots of 1752. At the trial of Henry Hunt and others for treason in 1820, James Scarlett, the prosecuting counsel, had this to say:
The ridiculous folly of a mob had been exemplified in a most humorous manner by that eminent painter, Mr. Hogarth. It was found necessary many years ago, in order to prevent a confusion in the reckoning of time, to knock eleven days out of the calendar, and it was supposed by ignorant persons that the legislature had actually deprived them of eleven days of their existence. This ridiculous idea was finely exposed in Mr. Hogarth's picture, where the mob were painted throwing up their hats, and crying out "Give us back our eleven days". Thus it was at the present time; that many individuals, who could not distinguish words from things, were making an outcry for that of which they could not well explain the nature. 'Give us our eleven days!': calendar reform in eighteenth-century England


The time of the clock is the historical moment when capitalism begins to supercede fuedalism. Clockworks were literally the mechanization of feudal society, hinting at the capitalism time to come. A vision of the future workers of Gothic Capitalism were first introduced with the creation of mechanical men, automatons, in the 17th century. As described in the Tales of Hoffman by Offenbach. They would presage the future proletariat of the machine age of the factories of the late 19th and early 20th century, where workers would become cogs in the machine.

But in the history of “clocks and culture” what is new in the development of Western horology is the application of mechanics in a system of economic production. Prior to their remarkable development in the course of the Renaissance, clocks were products of art and science.More than coincidence, a causal relationship can be seen in the invention of the mechanical clock in the period of early capitalism. The Renaissance Discovery of Time.

With the advent of further mechinization of work in the 20th Century skilled craft work was abolished in favour of the factory where work could be proportioned according to units of time, as developed by Fredrick Taylor. Hence the famous phrase 'Time is money" has been the essence of capitalism since the its inception with the development of the first mechanical clocks.

Representations of Capital interconnect with representations of space and time. E.P. Thompson, in his famous essay on the "Industrialization of Clock Time," showed how the transition from peasantry to wage labor -- from a feudal economy to a capitalist society -- entailed dramatic changes in the experience of time. Clock time was essential if industrialists were to measure output per a generalizable unit of labor. The capitalist organization of work made hours the constant variable needed to measure work and wages.

Fidelity01-97
Today, the relationship between clock time and Capital is cast in terms of Investors. In this Fidelity ad, where the images are choreographed to the fast-paced rock pulse of the Rolling Stone's song, "Time," the focus is on the consumer or the retail investor who races against time.
As Marx observed, workers formally exchanged their labor-time for a wage -- hence the requirement for punching a time clock. Today, we still recognize the relative freedom offered by professionalized occupations where one sells a product or a service (rather than the hours that went into making it) -- the distinction between a salary and a wage


To this day native peoples who do not live in industrialized society do not live by the tyranny of the clock, which is why you will find in farmer and artisan cultures the idea of 'manyana' timelessness, as in 'later', we will do that later, or as it is known here in Canada as native time. Aboriginal peoples do not keep time the same way as those of us enslaved to the tyranny of the clock.

While the clock marks the time of capitalism in Europe its truimph was in the creation of the American nation. No other nation was so defined by the clock. A nation of shop keepers, artisans, and even the farmers, who lived worked and died by the clock. In particular by the pocket watch. Accounting practices were set by the clock, as were business deals, farmers no longered worked to the pace of the sun but to the time of the clock. And even in the darkest interiors of the east coast mills during the civil war, time was told by the hands of the clock, which ticked away the minutes of the newly industrialized proletariat lives.

England was the prototype for industrialization. The rest of the world could look to that country as an example of what to emulate and what to avoid. Some saw a land of power and prosperity and wondered aloud whether God might after all be an Englishman; others saw "dark, Satanic mills" and the "specter of Manchester" with its filthy slums and human misery. Americans in particular thought hard about industry and whether it could be reconciled with the republican virtues seemingly rooted in an agrarian order. "Let our workshops remain in Europe," urged Jefferson in his Notes on Virginia in 1785, and he was no happier for being wiser about the feasibility of that policy after the War of 1812. Nor did all his fellow countrymen agree in principle. Some saw vast opportunities for industry in a land rich in natural resources, including seemingly endless supplies of wood and of waterpower. The debate between the two views became a continuing theme of American literature, characterized by Leo Marx as The Machine in the Garden (NY, 1964).

The combination of abundant resources and scarce labor meant that industrialization in America would depend on the use of machinery, and from the outset American inventors strove to translate manual tasks into mechanical action. For reasons that so far elude scholarly consensus, Americans' fascination with machines informed their approach to manufacturing to such an extent that British observers in the mid-19th century characterized machine-based production as the "American System". Precisely what was meant by that at the time is not clear, but by the end of the century it came to mean mass production by means of interchangeable parts. The origins of that system lay in the new nation's armories, in particular at Harpers Ferry, where John H. Hall first devised techniques for serial machining of parts within given tolerances.The Machine in the Garden, John H. Hall and the Origins of the "American System"


All automation is clock driven and has been in conflict with human time, our subjective sense of being. With the advent of machining automation, as David Noble discusses in his book
Progress Without People, in the late fities, a further step was taken in moving the factory towards a robotic assembly line requiring less workers and more engineers.

And today as you read this in cyberspace, your time is created by clockworks, whether in your computer, look down in the right hand corner, there is the clock.
And it's time has now become autonomous from our time. In fact as you read this your computer has it's own time that it operates under, while you read your geographical time, whether it is MST, CST, or EST or Grenwich Mean Time.

Scientists had long realized that atoms (and molecules) have resonances; each chemical element and compound absorbs and emits electromagnetic radiation at its own characteristic frequencies. These resonances are inherently stable over time and space. An atom of hydrogen or cesium here today is (so far as we know) exactly like one a million years ago or in another galaxy. Thus atoms constitute a potential "pendulum" with a reproducible rate that can form the basis for more accurate clocks.

The development of radar and extremely high frequency radio communications in the 1930s and 1940s made possible the generation of the kind of electromagnetic waves (microwaves) needed to interact with atoms. Research aimed at developing an atomic clock focused first on microwave resonances in the ammonia molecule. In 1949, NIST built the first atomic clock, which was based on ammonia. However, its performance wasn't much better than the existing standards, and attention shifted almost immediately to more promising atomic-beam devices based on cesium.
The "Atomic Age" of Time Standards

In fact the Y2k crsis was all about the pending apocalyptic failure of the clockworks of millions of computers around the world, and it was a vision of the collapse of capitalism as we know it. That it did not come to pass, does not lessen its social impact for that historical moment five years ago when the hands of clockwork of capitalism touched 12 midnight ending one millinieum and begining another. For in that moment in space and time, humanity held its breathe waiting for the clocks to stop. And had they, capitalism itself would have stopped.


Far from being a mere hoax, or urban myth, it was a vision of a future without clocks or capitalism. For some it was the fear of the ensuing chaos of living in a distopia without the tyranny of the clock, just as those feared living in a society without kings, rulers or bosses. For others it was a hope for a different future, a utopian moment that allowed us to imagine living in our own time rather than the rule of the clock.

That it affected America more than anywhere else, and was driven by American fears, shows the power of the clock in America. America is literally a clockwork nation, whose existance is identified with the clock and clockworks.
For American capitalism Y2k was as fearful as Bolshevism had been at the turn of last century. But the moment passed, and all was well once again. Or was it.

The reason American capitalism cannot concieve of the importance of Global Warming, or any long term disaster scenario is that due to its internal clockworks it can only think in terms of quarters of time, the time it takes for the market to make a short term profit. Wall Street is driven by its own clock works, which determine that it cannot think in long waves or over long periods of time.

Global Warming is an issue that takes in decades, if not hundreds of years to imagine. And the clockwork nation of America can only think in terms of 24/7, the ever present moment.

The Luddite movement was all about challenging work time, the tyranny of the clock and its machinery. As the situationists said; "The only difference between my free time and my work time is that I don't get paid for my free time."

Today modern capitalism is all about the speed up, whether its in the factory, or on the farm (feedlots are a form of speeding up of the fattening of cattle for the market, chemical fertilizers to enhance the growth of crops in a shorter time, the green revolution, genetic modification of crops, etc.). It's about having no time for ourselves as we are forced to work two jobs to make ends meet. In the last decade work time across Canada has increased. The average hours of work in Alberta is a 44 hour work week before overtime is considered to apply. Gone is the eight hour day for most of us.

Yet we know that if we all worked less more of us would work. The Canadian Auto Workers (CAW) has successfully challenged the big three auto companies to reduce forced overtime in favour of hiring more workers.

One hundred years ago the IWW called for the 4 hour day. And we are no closer to that achievment today then we were then. But if it seemed impossible then, it is an even more utopian vision today to most people. Just as they cannot concieve of ending wage slavery and abolishing the wages system, which is not based on our labour but our 'time' at work.

The revolutionary struggle of the proletariat has never been about 'abolishing work' nor has it been about embracing the 'revolutionary worker who gives her all for the party and state'. It has been about challenging work time, challenging the tyranny of the clock, of the regimination of life, work and play, free time and work time , have no meaning without King Clock.

That is the revolutionary struggle, to end the tyranny of time as we know it.



It is the secret of the childrens rhyme about Humpty Dumpty, who was not an egg but a clockwork machine.

`When I use a word,' Humpty Dumpty said, in rather a scornful tone, `it means just what I choose it to mean -- neither more nor less.'

`The question is,' said Alice, `whether you can make words mean so many different things.'

`The question is,' said Humpty Dumpty, `which is to be master -- that's all.'

Humpty Dumpty is a historically important pinball machine released by Gottlieb in October 1947. It is considered to be the first true pinball machine ever produced, distinguishing it from earlier bagatelle game machines. Humpty Dumpty had six flippers, but, unlike modern pinball tables, they faced outward instead of inward and were not placed at the bottom of the table near the main outhole. Like all early pinball tables, Humpty Dumpty was constructed with wood and had backlit scoring in preset units of scoring rather than mechanical reel or electronic LED scoring.

THE TYRANNY OF THE CLOCK
Now the movement of the clock sets the tempo men's lives - they become the servant of the concept of time which they themselves have made, and are held in fear, like Frankenstein by his own monster. In a sane and free society such an arbitrary domination of man's functions by either clock or machine would obviously be out of the question. The domination of man by the creation of man is even more ridiculous than the domination of man by man. Mechanical time would be relegated to its true function of a means of reference and co-ordination, and men would return again to a balance view of life no longer dominated by the worship of the clock. Complete liberty implies freedom from the tyranny of abstractions as well as from the rule of men.
George Woodcock
First published in War Commentary - For Anarchism mid-march 1944.


A Revolution in Timekeeping

In Europe during most of the Middle Ages (roughly 500 CE to 1500 CE), technological advancement virtually ceased. Sundial styles evolved, but didn't move far from ancient Egyptian principles.

During these times, simple sundials placed above doorways were used to identify midday and four "tides" (important times or periods) of the sunlit day. By the 10th century, several types of pocket sundials were used. One English model even compensated for seasonal changes of the Sun's altitude.

Then, in the first half of the 14th century, large mechanical clocks began to appear in the towers of several large Italian cities. We have no evidence or record of the working models preceding these public clocks, which were weight-driven and regulated by a verge-and-foliot escapement. Variations of the verge-and-foliot mechanism reigned for more than 300 years, but all had the same basic problem: the period of oscillation of the escapement depended heavily on the amount of driving force and the amount of friction in the drive. Like water flow, the rate was difficult to regulate.

Another advance was the invention of spring-powered clocks between 1500 and 1510 by Peter Henlein of Nuremberg. Replacing the heavy drive weights permitted smaller (and portable) clocks and watches. Although they ran slower as the mainspring unwound, they were popular among wealthy individuals due to their small size and the fact that they could be put on a shelf or table instead of hanging on the wall or being housed in tall cases. These advances in design were precursors to truly accurate timekeeping.

Accurate Mechanical Clocks
In 1656, Christiaan Huygens, a Dutch scientist, made the first pendulum clock, regulated by a mechanism with a "natural" period of oscillation. (Galileo Galilei is credited with inventing the pendulum-clock concept, and he studied the motion of the pendulum as early as 1582. He even sketched out a design for a pendulum clock, but he never actually constructed one before his death in 1642.) Huygens' early pendulum clock had an error of less than 1 minute a day, the first time such accuracy had been achieved. His later refinements reduced his clock's error to less than 10 seconds a day.

Around 1675, Huygens developed the balance wheel and spring assembly, still found in some of today's wristwatches. This improvement allowed portable 17th century watches to keep time to 10 minutes a day. And in London in 1671, William Clement began building clocks with the new "anchor" or "recoil" escapement, a substantial improvement over the verge because it interferes less with the motion of the pendulum.

clock

The clock is a particularly emblematic piece of technology.The invention of the mechanical clock in the thirteenth century inaugurated a new representation of time. For the West, the clock symbolized regularity, predictibility, and control. A clock serves to produce a correspondence between events and vertices of time moments.

The disciplining of labor and of social relations through time is another profound function of the clock. Monasticism asserted the originally Jewish thesis that work is an essential kind of worship, that God's command to labor six days of the week was as binding as that to rest on the seventh. The regulation of the day, which started in the ringing of the bells in the monastery, was extended to society at large through the tyranny of the clock. cf orrery. Lewis Mumford described the relation between the clock and the monastery in Technics and Civilization. For Mumford, "The clock, not the steam-engine, is the key machine of the modern industrial age." Mumford notes that the clock changes our perception of time as quantity. Deleuze and Guattari describe this process as striation. The model for an analysis of the clock would be Foucault's examination of the Panopticon in Discipline and Punish. (see diagram.)

It is important to keep in mind the socially coercive function of the clock. (see E.P. Thompson, "Time, Work-Discipline, and Industrial Capitalism" in Giddens and Held, Classes, Power, and Conflict.) Thompson distinguishes between the "natural" rhythms of "task time" and "clock time," in which time becomes currency that in not passed but spent, which is marked by "time thrift" and a clear demarcation between work and life. Time obedience can be distiguished from time discipline: an internalization of social discipline, away from public spectacle (the clocktower) in favor of the personal (the pocket watch.)
Contents Under Pressure - A Hypertext in Progress by Christian Hubert


On Time
by Carlene E. Stephens and The Smithsonian Institution


Increasingly, after about 1820, the cadences of the ticking clock echoing in industry, railroads, and cities grew more insistent. Very much in demand, clocks and watches began to spill from American factories. More people found themselves governed by the mechanical regularity and pace of the clock.

By about 1880, the American railroads had knit together a national economy, and late in 1883 they abandoned the fifty-some regional operating times to voluntarily impose five time zones on their routes across the continent. Clocks, no longer set to the sun overhead, were instead synchronized to the new system. Some people enjoyed the conveniences of the new national standard time, but others resisted the change.

As the twentieth century dawned, the country became obsessed with using time efficiently. Like it or not, people found themselves pressured by the clock, especially in the form of factory time clocks and stopwatches. Experts in "scientific management" segmented, streamlined, and standardized both factory and office work to increase productivity. They advocated timesaving efficiencies for nearly every aspect of American life, including the home. Even leisure - time off - became defined by the clock. It was divided up, measured out, not to be wasted.

Alexis McCrossen


Current Research

Between the Civil War and the Great Depression civic and business interests across the nation erected thousands of public timepieces. Using an array of sources, including local histories, the papers of the Seth Thomas and E. Howard Clock companies, and the Historic Engineering and Buildings Surveys, I am at once assessing when, where and under what circumstances public timepieces were installed and considering what life was like under them.
The second part of the project considers the distribution and ownership of pocket watches during the transition to widespread watch ownership (1870s and 1880s). I am using the watch register of David Edwards Hoxie, who repaired watches in Northampton, Massachusetts between 1863 and 1884. By using census schedules, tax records, city directories, and other demographic data I can construct a picture of watch ownership during a critical moment in the “reformation of time consciousness.” (Michael O’Malley Keeping Watch: A History of American Time 1990)

My research project, a book-length study entitled “A Republic in Time: History, Modernity, and Social Imagination in Nineteenth-Century America,” investigates how transformations in the perception of time shaped American conceptions of democratic society and modern nationhood. The fundamental premise of the study is that time is not a transhistorical phenomenon, an aspect of nature existing outside of human society, but rather a historical artifact produced by human beings acting within specific historical circumstances. I focus upon the central role that time played in the nineteenth-century United States in linking the economic transformations wrought by developing capitalism with the political imperative to define American national identity. New technologies and scientific discoveries made it possible to imagine new forms of time, including clock time and geological “deep time,” but it was American writers, pundits, and political thinkers who gave these new temporalities their significance. Theories of American nationality emphasized how the United States, as a revolutionary “modern” nation, represented a rupture with all past examples of nationhood. But despite the widespread consensus that America was different from older nations, the precise nature of America’s modernity remained to be defined. This question was a historical one, and hence it is appropriate that time itself became the most important medium through which American thinkers debated this crucial issue. Industrial capitalism and market-oriented forms of commerce seemed to demand that Americans adjust their perception to the time of the clock. Clockwork rationality became a compelling way of defining a modern way of life, but Americans critical of capitalism and those less closely linked to the market proposed other possible versions of modernity based on other modes of temporality. It is only retrospectively that clockwork rationality has come to seem an inevitable foundation of modernity. Recovering alternate ways of defining America as a modern nation helps us to avoid imposing an artificial teleology upon our national history, and reveals instead a history created by human beings in response to the contingencies of circumstance.


Reading Hamilton's Clocks: Time Consciousness in Early National and Antebellum Urban Commercial Culture

Julia Ott
Department of History
Yale University


Historians of early American labor and time consciousness have largely ignored these social and cultural consequences of an accelerating credit clock. Inspired by E.P. Thompson's seminal essay, scholars have extensively analyzed the transition from task-orientation to time-discipline, as well as the tensions between a notion of divinely originating natural time and clock time. [3] According to Thompson, "mature industrial societies of all varieties are marked by time-thrift and by a clear demarcation between 'work' and 'life'." [4] The advent of industrialism "entailed a severe restructuring of working habits," including alterations "in the inward notation of time." [5] Where men controlled "their own working lives . . .alternate bouts of intense labor and idleness" characterized labor.

[6] In contrast, factory organization of labor demanded synchronization through internalization of the mechanical clock. "Time-sense" represented "technological conditioning" while "time-measurement" embodied "a means of labor exploitation." [7] Herbert Gutman's "Work, Culture, and Society in Industrializing America" initiated the application of Thompsonian analysis to labor relations and work culture in the United States. Gutman posited "a recurrent tension" throughout the course of the nineteenth century between the "diverse pre-modern native and foreign peoples" entering the factory system "and the demands placed upon them by the regularities and disciplines of factory labor," particularly clock-discipline. [8] Building on Gutman, subsequent scholarship noted clock-regulation's mitigation by the retention of piece-work and family systems of labor in early American factories and mills, as well as the clock's use as an instrument of planter hegemony in the South. [9]

But to fully understand capitalism's central temporal conflict, we need to know more about the origins of capitalists' "modern time/money calculus." [10] What implanted this underlying temporal logic? The answer lies in the escalating exigencies of credit in the early national period. Certainly the profit motive contributed to capitalist desires to discipline and control workers, but the credit clock provided the model for the specific selection of the time-discipline solution. Some historians have correctly accredited capitalist temporality to a legacy of mercantile notions of time-thrift and recognized both its continuity and its intensification during the course of the nineteenth century. [11] Yet the ascendancy of the credit value of time over the labor value of time and the associated development of commercial temporal anxiety remain unexamined. Historians generally prefer to see long continuities in mercantile temporality, originating in the Middle Ages with an urban, commercial break from seasonal, cyclical, natural notions of time. [12] But the recognition of the credit value of time represented an crucial step for capitalists, for it ascribed a market value to time independent of labor performed and the exploited worker performing the labor.

Monday, September 06, 2021

The New Thermodynamic Understanding of Clocks

Studies of the simplest possible clocks have revealed their fundamental limitations — as well as insights into the nature of time itself.



Pretty much anything can be a clock, but some clocks are more useful than others.


Corinne Reid for Quanta Magazine
Natalie Wolchover
Senior Writer/Editor


August 31, 2021

VIEW PDF/PRINT MODE

In 2013, a masters student in physics named Paul Erker went combing through textbooks and papers looking for an explanation of what a clock is. “Time is what a clock measures,” Albert Einstein famously quipped; Erker hoped a deeper understanding of clocks might inspire new insights about the nature of time.

But he found that physicists hadn’t bothered much about the fundamentals of timekeeping. They tended to take time information for granted. “I was very unsatisfied by the way the literature so far dealt with clocks,” Erker said recently.

The budding physicist started thinking for himself about what a clock is — what it takes to tell time. He had some initial ideas. Then in 2015, he moved to Barcelona for his doctorate. There, a whole cadre of physicists took up Erker’s question, led by a professor named Marcus Huber. Huber, Erker and their colleagues specialized in quantum information theory and quantum thermodynamics, disciplines concerning the flow of information and energy. They realized that these theoretical frameworks, which undergird emerging technologies like quantum computers and quantum engines, also provided the right language for describing clocks.

“It occurred to us that actually a clock is a thermal machine,” Huber explained over Zoom, his dark blond dreadlocks draped over a black T-shirt. Like an engine, a clock harnesses the flow of energy to do work, producing exhaust in the process. Engines use energy to propel; clocks use it to tick.


From left: Paul Erker, Nicolai Friis, Emanuel Schwarzhans, Maximilian Lock and Marcus Huber coauthored a recent paper on clock thermodynamics.



IQOQI Vienna

Over the past five years, through studies of the simplest conceivable clocks, the researchers have discovered the fundamental limits of timekeeping. They’ve mapped out new relationships between accuracy, information, complexity, energy and entropy — the quantity whose incessant rise in the universe is closely associated with the arrow of time.

These relationships were purely theoretical until this spring, when the experimental physicist Natalia Ares and her team at the University of Oxford reported measurements of a nanoscale clock that strongly support the new thermodynamic theory.

Nicole Yunger Halpern, a quantum thermodynamicist at Harvard University who was not involved in the recent clock work, called it “foundational.” She thinks the findings could lead to the design of optimally efficient, autonomous quantum clocks for controlling operations in future quantum computers and nanorobots.

The new perspective on clocks has already provided fresh fodder for discussions of time itself. “This line of work does grapple, in a fundamental way, with the role of time in quantum theory,” Yunger Halpern said.

Gerard Milburn, a quantum theorist at the University of Queensland in Australia who wrote a review paper last year about the research on clock thermodynamics, said, “I don’t think people appreciate just how fundamental it is.”
What a Clock Is

The first thing to note is that pretty much everything is a clock. Garbage announces the days with its worsening smell. Wrinkles mark the years. “You could tell time by measuring how cold your coffee has gotten on your coffee table,” said Huber, who is now at the Technical University of Vienna and the Institute for Quantum Optics and Quantum Information Vienna.

Early in their conversations in Barcelona, Huber, Erker and their colleagues realized that a clock is anything that undergoes irreversible changes: changes in which energy spreads out among more particles or into a broader area. Energy tends to dissipate — and entropy, a measure of its dissipation, tends to increase — simply because there are far, far more ways for energy to be spread out than for it to be highly concentrated. This numerical asymmetry, and the curious fact that energy started out ultra-concentrated at the beginning of the universe, are why energy now moves toward increasingly dispersed arrangements, one cooling coffee cup at a time.

Not only do energy’s strong spreading tendency and entropy’s resulting irreversible rise seem to account for time’s arrow, but according to Huber and company, it also accounts for clocks. “The irreversibility is really fundamental,” Huber said. “This shift in perspective is what we wanted to explore.”




MULTIMEDIA
Arrows of Time

MAY 4, 2020


Coffee doesn’t make a great clock. As with most irreversible processes, its interactions with the surrounding air happen stochastically. This means you have to average over long stretches of time, encompassing many random collisions between coffee and air molecules, in order to accurately estimate a time interval. This is why we don’t refer to coffee, or garbage or wrinkles, as clocks.

We reserve that name, the clock thermodynamicists realized, for objects whose timekeeping ability is enhanced by periodicity: some mechanism that spaces out the intervals between the moments when irreversible processes occur. A good clock doesn’t just change. It ticks.

The more regular the ticks, the more accurate the clock. In their first paper, published in Physical Review X in 2017, Erker, Huber and co-authors showed that better timekeeping comes at a cost: The greater a clock’s accuracy, the more energy it dissipates and the more entropy it produces in the course of ticking.

“A clock is a flow meter for entropy,” said Milburn.

They found that an ideal clock — one that ticks with perfect periodicity — would burn an infinite amount of energy and produce infinite entropy, which isn’t possible. Thus, the accuracy of clocks is fundamentally limited.

Indeed, in their paper, Erker and company studied the accuracy of the simplest clock they could think of: a quantum system consisting of three atoms. A “hot” atom connects to a heat source, a “cold” atom couples to the surrounding environment, and a third atom that’s linked to both of the others “ticks” by undergoing excitations and decays. Energy enters the system from the heat source, driving the ticks, and entropy is produced when waste energy gets released into the environment.




Samuel Velasco/Quanta Magazine

The researchers calculated that the ticks of this three-atom clock become more regular the more entropy the clock produces. This relationship between clock accuracy and entropy “intuitively made sense to us,” Huber said, in light of the known connection between entropy and information.

In precise terms, entropy is a measure of the number of possible arrangements that a system of particles can be in. These possibilities grow when energy is spread more evenly among more particles, which is why entropy rises as energy disperses. Moreover, in his 1948 paper that founded information theory, the American mathematician Claude Shannon showed that entropy also inversely tracks with information: The less information you have about, say, a data set, the higher its entropy, since there are more possible states the data can be in.

“There’s this deep connection between entropy and information,” Huber said, and so any limit on a clock’s entropy production should naturally correspond to a limit of information — including, he said, “information about the time that has passed.”

In another paper published in Physical Review X earlier this year, the theorists expanded on their three-atom clock model by adding complexity — essentially extra hot and cold atoms connected to the ticking atom. They showed that this additional complexity enables a clock to concentrate the probability of a tick happening into narrower and narrower windows of time, thereby increasing the regularity and accuracy of the clock.

In short, it’s the irreversible rise of entropy that makes timekeeping possible, while both periodicity and complexity enhance clock performance. But until 2019, it wasn’t clear how to verify the team’s equations, or what, if anything, simple quantum clocks had to do with the ones on our walls.
Measuring Ticks

At a conference dinner that year, Erker sat near Anna Pearson, a graduate student at Oxford who had given a talk he’d found interesting earlier that day. Pearson worked on studies of a 50-nanometer-thick vibrating membrane. In her talk, she remarked offhandedly that the membrane could be stimulated with white noise — a random mix of radio frequencies. The frequencies that resonated with the membrane drove its vibrations.

To Erker, the noise seemed like a heat source, and the vibrations like ticks of a clock. He suggested a collaboration.

Pearson’s supervisor, Ares, was enthusiastic. She’d already discussed with Milburn the possibility that the membrane could behave as a clock, but she hadn’t heard about the new thermodynamic relationships derived by the other theorists, including the fundamental limit on accuracy. “We said, ‘We can definitely measure that!’” Ares said. “‘We can measure the entropy production! We can measure the ticks!’”

The vibrating membrane isn’t a quantum system, but it’s small and simple enough to allow precise tracking of its motion and energy use. “We can tell from the energy dissipation in the circuit itself how much the entropy changes,” Ares said.

She and her team set out to test the key prediction from Erker and company’s 2017 paper: That there should be a linear relationship between entropy production and accuracy. It was unclear whether the relationship would hold for a larger, classical clock, like the vibrating membrane. But when the data rolled in, “we saw the first plots [and] we thought, wow, there is this linear relationship,” Huber said.

The regularity of the membrane clock’s vibrations directly tracked with how much energy entered the system and how much entropy it produced. The findings suggest that the thermodynamic equations the theorists derived may hold universally for timekeeping devices.



Natalia Ares measured the thermodynamic properties of a clock made from a tiny vibrating membrane, shown here surrounded by circuitry in her lab at the University of Oxford. Dave Fleming; Courtesy of Natalia Ares

Most clocks don’t approach these fundamental limits; they burn far more than the minimum energy to tell time. Even the world’s most accurate atomic clocks, like those operated at the JILA institute in Boulder, Colorado, “are far from the fundamental limit of minimum energy,” said Jun Ye, a physicist at JILA. But, Ye said, “we clockmakers are trying to use quantum information science to build more precise and accurate clocks,” and so fundamental limits may become important in the future. Yunger Halpern agrees, noting that efficient, autonomous clocks may eventually govern the timing of operations inside quantum computers, removing the need for external control.

Practicalities aside, Erker’s hope has stayed the same since his student days. “The ultimate goal would be to understand what time is,” he said.
A Smooth Order

One major aspect of the mystery of time is the fact that it doesn’t play the same role in quantum mechanics as other quantities, like position or momentum; physicists say there are no “time observables” — no exact, intrinsic time stamps on quantum particles that can be read off by measurements. Instead, time is a smoothly varying parameter in the equations of quantum mechanics, a reference against which to gauge the evolution of other observables.

Physicists have struggled to understand how the time of quantum mechanics can be reconciled with the notion of time as the fourth dimension in Einstein’s general theory of relativity, the current description of gravity. Modern attempts to reconcile quantum mechanics and general relativity often treat the four-dimensional space-time fabric of Einstein’s theory as emergent, a kind of hologram cooked up by more abstract quantum information. If so, both time and space ought to be approximate concepts.

RELATED:

Does Time Really Flow? New Clues Come From a Century-Old Approach to Math.

The Universal Law That Aims Time’s Arrow

A Defense of the Reality of Time

The clock studies are suggestive, in showing that time can only ever be measured imperfectly. The “big question,” said Huber, is whether the fundamental limit on the accuracy of clocks reflects a fundamental limit on the smooth flow of time itself — in other words, whether stochastic events like collisions of coffee and air molecules are what time ultimately is.

“What we’ve done is to show that even if time is a perfect, classical and smooth parameter governing time evolution of quantum systems,” Huber said, “we would only be able to track its passage” imperfectly, through stochastic, irreversible processes. This invites a question, he said: “Could it be that time is an illusion and smooth time is an emergent consequence of us trying to put events into a smooth order? It is certainly an intriguing possibility that is not easily dismissed.”