英语词汇“atomic clock”造句子简单的方法、技巧、例句及翻译-英语例句辞典

On the contrary, there is an extremely wide range of experience—with nuclear accelerators and atomic clocks, for example—in precise quantitative agreement with special relativity. Cosmos 1980-01-01T00:00:00Z

Fountain pens from Paris, chess sets from Iceland, atomic clocks from Austria, jewelry from Yugoslavia, masks from Burma. Black Swan Green 2006-04-10T00:00:00Z

The codex was the perfect version of the Bible, a sort of atomic clock of Judaism, and intended to be the model for all subsequent copies. ?People Who Eat Darkness?: The disappearing blonde 2012-05-20T21:00:00Z

“Black holes. The event horizon. The atomic clocks. Seeing the unseeable.” Don DeLillo, an Old Hand at Paranoia and Dread, Meets Us Where We Are 2020-10-12T04:00:00Z

In the last century we have experienced the breaking of the sound barrier, the invention of the atomic clock, radio-controlled timekeeping, the internet, and pixelated clocks pulsing inexorably on our computers and phones. Still ticking: The improbable survival of the luxury watch business | Simon Garfield 2016-10-19T04:00:00Z

She dances, flops over a chair and slams home Coward’s zingers with the precision of an atomic clock, the panache of a seasoned comic. Angela Lansbury’s road, from ‘Murder, She Wrote’ to Noël Coward 2015-03-12T04:00:00Z

"It could also enable futuristic chip-scale atomic clocks, which allows navigation when GPS is compromised or unavailable." Photonics team develops high-performance ultrafast lasers that fit on a fingertip 2023-11-09T05:00:00Z

Scandium, an element used in aerospace components and sports equipment, enables an accuracy of one second in 300 billion years, or roughly a thousand times more precision than the current standard atomic clock. Milestone moment toward development of nuclear clock 2023-11-03T04:00:00Z

So every few years since 1972, the two times have been synced by the insertion of leap seconds — pausing the atomic clocks briefly to let the astronomic one catch up. A Giant Leap for the Leap Second. Is Humankind Ready? 2023-11-03T04:00:00Z

But the River Thames is perhaps the choice for the most special deliveries - including an optical atomic clock. Flotilla of boats carries atomic clock on Thames 2023-09-09T04:00:00Z

Generally, the regularly timed ticking of a pulsar “clock” is so reliable that its accuracy rivals that of atomic clocks. Ultracold Gases Can Probe Neutron Star Guts 2023-07-18T04:00:00Z

“We can create these models that basically let us know the time of arrival to precisions that rival atomic clocks,” says Thankful Cromartie, an astrophysicist at Cornell University and a member of NANOGrav. Scientists Thrill at First Hints of Cosmic ‘Hum’ from Giant Gravitational Waves 2023-06-28T04:00:00Z

They were originally developed in the 1990s to make more accurate optical atomic clocks, for which the inventors won the 2005 Nobel Prize in Physics. Astronomy Tool Can Now Detect COVID in Breath 2023-05-12T04:00:00Z

Time on Earth is precisely tracked by atomic clocks, but synchronizing time on the moon is tricky because clocks run faster there, gaining around 56 microseconds, or millionths of a second, per day. The Moon May Get Its Own Time Zone 2023-03-07T05:00:00Z

While the space station doesn’t have its own time zone, it runs on Coordinated Universal Time, or UTC, which is meticulously based on atomic clocks. What time is it on moon? Europe pushing for lunar time zone 2023-02-28T05:00:00Z

The alternative would be to use the synthesized output of the lunar atomic clocks as the Moon’s own independent, continuous time, and to track its relationship to UTC. What Time Is It on the Moon? 2023-01-26T05:00:00Z

Jerrold Zacharias was a prominent nuclear physicist, a science advisor to President Eisenhower, and he developed the first atomic clock. Leona Zacharias Helped Solve a Blindness Epidemic Among Premature Babies. She Received Little Credit. 2023-01-12T05:00:00Z

The combs can measure the natural oscillation of atoms so precisely that they have become an indispensable component of atomic clocks, which keep time incredibly well by counting these oscillations. Astronomy Tool Can Now Detect COVID in Breath 2023-05-12T04:00:00Z

One of the experiments will be an extremely cold atomic clock. China Maps Out Plans to Put Astronauts on the Moon and on Mars 2022-12-12T05:00:00Z

Its abandonment means that astronomical time, based on Earth’s rotation, will slowly diverge from Coordinated Universal Time, based on the vibrations of cesium in atomic clocks. News at a glance: Antibioticmaking clams, marijuana for research, and China’s ‘Friedmann’ 2022-11-30T05:00:00Z

Coordinated Universal Time, or U.T.C., is tenderly constructed from readings made by atomic clocks kept at national laboratories around the world. Is Time Running Out for the Leap Second? 2022-11-14T05:00:00Z

Its rotating crews of three astronauts will use the station to perform experiments and tests of new technologies, such as ultracold atomic clocks. Chinese Rocket Will Crash to Earth on November 5: Here’s What We Know 2022-11-03T04:00:00Z

On board are more than 20 mini-laboratories fitted with centrifuges, cold chambers reaching temperatures as low as –80 °C, a high-temperature furnace, multiple lasers and an optical atomic clock. China’s Space Station Is Almost Complete—How Will Scientists Use It? 2022-11-03T04:00:00Z

The module carries a wide range of experimental equipment, including extremely accurate atomic clocks and gear designed to create the coldest conditions ever achieved by humanity. China Launches Its Space Station’s Third and Final Module 2022-10-31T04:00:00Z

Figure 1.18 An atomic clock such as this one uses the vibrations of cesium atoms to keep time to a precision of better than a microsecond per year. College Physics for AP Courses 2015-08-12T00:00:00Z

Space Force, carries atomic clocks that provide time data, along with information about longitude, latitude and altitude. Is Time Running Out for the Leap Second? 2022-11-14T05:00:00Z

Later, atomic clocks were taken up in high-flying aircraft and even on one of the Gemini space flights. Astronomy 2016-10-13T00:00:00Z

Scientists in the 1960s began working with atomic clocks to measure time more accurately. NOT REAL NEWS: A look at what didn’t happen this week 2022-08-12T04:00:00Z

Time and Date notes that the year 2020 had the highest number of short days since scientists started using atomic clocks to take daily measurements in the 1960s. Earth is spinning faster than it should be and no one is sure why 2022-08-05T04:00:00Z

June 29 was 1.59 milliseconds shorter than usual — the shortest day since the 1960s when scientists began using atomic clocks to measure time, Forbes reported. Earth is spinning faster than usual, but why? Experts’ heads spin, too 2022-08-03T04:00:00Z

As it started developing CAPSTONE, Advanced Space also decided to add a computer-chip-scale atomic clock to the spacecraft and compare that time with what is broadcast from Earth. NASA’s Return to the Moon Starts With Launching a 55-Pound Cube 2022-06-26T04:00:00Z

In place of that logistical impossibility, the Event Horizon Telescope collects data via eight radio observatories in Greenland, Antarctica, and six other locations in between, synchronized to atomic clocks. Astronomers capture first image of supermassive black hole at our galaxy's center 2022-05-12T04:00:00Z

The official length of a day, scientifically speaking, now compares the speed of one full rotation of the Earth to time taken by atomic clocks, Merkowitz said. NOT REAL NEWS: A look at what didn’t happen this week 2022-08-12T04:00:00Z

“We’re going to stick this artificial atomic clock in the cavity and see if it still keeps good time.” To crack the mystery of dark matter, physicists turn to supersensitive quantum sensors 2022-04-27T04:00:00Z

In addition, as weird as it may seem, we still tick through 1957-era seconds, even with our modern atomic clocks. Get Ready For the New, Improved Second 2022-04-25T04:00:00Z

On Earth, astronomers see flashes hundreds of times a second from some pulsars, arriving as regularly as the ticks of an atomic clock. Astronomers find a new way to detect gravitational waves 2022-04-06T04:00:00Z

As a timekeeping device, the light-based time crystal may be slightly less accurate than state-of-the-art atomic clocks. Time Crystals Made of Light Could Soon Escape the Lab 2022-03-09T05:00:00Z

This is very close to modern calculations made with an atomic clock. World History: Patterns of Interaction 2012-01-01T00:00:00Z

Improvements in atomic clocks, which undergird GPS, can improve navigation for weapons and targeting, for example. The Manhattan Project Shows Scientists’ Moral and Ethical Responsibilities 2022-03-02T05:00:00Z

The redefinition is in the works because scientists have developed new instruments called optical atomic clocks. Get Ready For the New, Improved Second 2022-04-25T04:00:00Z

This is already an issue because the atomic time for the world is a consensus of atomic clocks all over the world. How Measuring Time Shaped History 2022-01-28T05:00:00Z

Dennis Owens, the witty voice of classical music radio in Washington whose rumbling bass voice could throw off the atomic clock, died Sept. 26 at a hospice center in Naples, Fla. He was 87. Dennis Owens, Washington’s classical wake-up man for four decades, dies at 87 2022-01-04T05:00:00Z

Pulsars pulse with such metronomic regularity that the binary pair is like having two atomic clocks in orbit around each other. Double pulsar data helps Einstein’s theory of gravity pass toughest test yet 2021-12-14T05:00:00Z

My grandfather, Jerrold Zacharias, was a well-known atomic physicist at MIT who invented the atomic clock and worked on the Manhattan Project, and also changed the way physics was taught in schools. The Lost Women of Science, Episode 1: The Question Mark 2021-11-04T04:00:00Z

In all, about 20 or 30 optical atomic clocks of all species exist today, Donley said. Get Ready For the New, Improved Second 2022-04-25T04:00:00Z

By 1955, an atomic clock was accurate to one second every 300 years; in the 1980s Britain’s National Physical Laboratory made atomic clocks accurate within one second every 300,000 years. Review | How time was measured, and what it meant, across the centuries 2021-09-02T04:00:00Z

Entanglement could synchronize atomic clocks and prevent the delays and errors that accumulate as information is sent between them. New internet woven from ‘spooky’ quantum links could supercharge science and commerce 2021-06-03T04:00:00Z

A pulsar’s strong magnetic field can create a beam of radiation that swings around, repeatedly sweeping past the Earth with a regularity that rivals the accuracy of atomic clocks. Galaxy-Size Gravitational-Wave Detector Hints at Exotic Physics 2021-02-03T05:00:00Z

The scientists imagine measuring a quantum atomic clock experiencing two different times while it is placed in superposition—a quirk of quantum mechanics in which something appears to exist in two places at once. Quantum Time Twist Offers a Way to Create Schrödinger’s Clock 2020-10-23T04:00:00Z

And this is where the optical atomic clock’s secret weapon kicks in. Get Ready For the New, Improved Second 2022-04-25T04:00:00Z

For qubits, we use particular states of ytterbium-171 that are so stable that they are widely used for atomic clocks. Quantum computing: ‘the best data we have ever seen’ thanks to shutdown 2020-06-29T04:00:00Z

When I was a kid, I loved all clocks — atomic clocks, clock radios, even clocks you couldn’t see. How Analog Clocks Can Give Us More by Giving Us Less 2020-05-05T04:00:00Z

Moreover, the atoms must be held in traps, so that their motion is almost completely frozen — in other words, the operation of atomic clocks requires precision manipulation of quantum systems. Mass spectrometry for future atomic clocks 2020-05-05T04:00:00Z

Researchers must observe simultaneously with all the telescopes and synchronize the data recorded on computer disks at each site with the best atomic clocks. A New Map of the Milky Way 2020-03-17T04:00:00Z

This enables optical atomic clocks to measure time far more precisely than cesium clocks. Get Ready For the New, Improved Second 2022-04-25T04:00:00Z

The information is provided by cesium atomic clocks and is accurate within less than 0.0001 milliseconds. These radio stations don’t play news, talk shows or music. But they do broadcast very, very accurate time signals. 2020-01-24T05:00:00Z

It’s the difference between an atomic clock and a human heart. Perspective | D.C.-area musicians will gather in memory of drummer Robbie Magruder 2019-12-23T05:00:00Z

GPS was, and continues to be, a tremendous feat of engineering that required the development of new satellites, atomic clocks and GPS receivers. A Pioneer of GPS Passes Away 2019-12-02T05:00:00Z

Modern atomic clocks are marvels of accuracy, but they lack the guaranteed long-term stability of time crystals. The Exquisite Precision of Time Crystals 2019-10-16T04:00:00Z

If several optical atomic clocks could be placed in different parts of the world, geodesists could measure ticking differences between them, and therefore differences in height and the gravitational field, he said. Get Ready For the New, Improved Second 2022-04-25T04:00:00Z

Constructing the image was a huge coordinated effort using eight telescopes around the world, synchronized by atomic clocks. Daily briefing: First-ever image of a black hole wins Breakthrough Prize 2019-09-05T04:00:00Z

The EHT team made simultaneous observations on eight telescopes around the world, synchronized by atomic clocks to an accuracy of better than one second in 100 million years. First ever picture of a black hole scoops US$3-million prize 2019-09-04T04:00:00Z

In 2017, Yue allegedly tried to purchase another cesium atomic clock, this time representing that it would be used at a calibration laboratory in California. South El Monte man charged with illegally exporting cesium atomic clocks 2019-06-28T04:00:00Z

The rideshare features a deep space atomic clock, solar sail, a clean and green rocket fuel testbed and even human ashes. 10 Things to Know for Today 2019-06-25T04:00:00Z

Using very long baseline interferometry, researchers in Italy and Japan recently tried to link two optical atomic clocks about 5,500 miles apart. Get Ready For the New, Improved Second 2022-04-25T04:00:00Z

The middle-of-the-night rideshare features a deep space atomic clock, solar sail, clean and green rocket fuel, and even human ashes, including an astronaut's. SpaceX launches hefty rocket with 24 satellites, human ashes 2019-06-25T04:00:00Z

The middle-of-the-night rideshare features a deep space atomic clock, solar sail, clean and green rocket fuel, and even human ashes, including an astronaut’s. SpaceX launches hefty rocket with 24 satellites 2019-06-25T04:00:00Z

Cesium atomic clocks are precision devices that measure time using the frequency of atomic emissions from the element cesium, according to a website maintained by the U.S. South El Monte man charged with illegally exporting cesium atomic clocks 2019-06-28T04:00:00Z

And this time, it’s carrying a host of new technologies into space, ranging from a new type of atomic clock to a thin sail that moves on sunlight. An atomic clock, "green" propellant, and a sunlight-surfing sail are headed to space next week 2019-06-21T04:00:00Z

The experiment involved several antennas reading radio signals from distant outer space, and then linking the information to atomic clocks. Get Ready For the New, Improved Second 2022-04-25T04:00:00Z

Researchers needed to install atomic clocks precise enough to match up their observations down to the microsecond. See a black hole for the first time in a historic image from the Event Horizon Telescope 2019-04-10T04:00:00Z

A total of 4 petabytes were recorded, each reading time-stamped using an atomic clock. First-ever picture of black hole revealed 2019-04-10T04:00:00Z

Observations at the different sites were coordinated using atomic clocks, called hydrogen masers, accurate to within one second every 100 million years. Black hole picture captured for first time in space ‘breakthrough’ 2019-04-10T04:00:00Z

A new atomic clock goes to space On board one of the Falcon Heavy’s satellites is a small clock the size of a toaster. An atomic clock, "green" propellant, and a sunlight-surfing sail are headed to space next week 2019-06-21T04:00:00Z

They do this using time signals from GPS satellites’ ultra-precise atomic clocks. GPS glitch threatens thousands of scientific instruments 2019-04-02T04:00:00Z

There is good reason to think that, with further development, arrays of single two-valence-electron atoms will lead to advances in optical atomic clocks. The next step in making arrays of single atoms 2019-03-24T04:00:00Z

According to his calculations, a magnitude 9 temblor would release enough energy so that the resulting change in the gravitational acceleration of the earthquake’s sound wave might be measurable using atomic clocks. Sound by the Pound: Surprising Discovery Hints Sonic Waves Carry Mass 2019-03-11T04:00:00Z

A global network of atomic clocks could be used to detect flaws in the fabric of space-time that could explain dark matter. Daily briefing: Chemist sent mercenaries to save her PhD student from ISIS 2018-12-13T05:00:00Z

An atomic clock, on the other hand, measures how long it takes for small particles to transition from different states of energy. An atomic clock, "green" propellant, and a sunlight-surfing sail are headed to space next week 2019-06-21T04:00:00Z

Metrologists are developing more precise atomic clocks that use optical radiation with higher frequencies than the current cesium standard. Metric system overhaul will dethrone the one, true kilogram 2018-11-06T05:00:00Z

Some of the proposed technologies are relatively close to market applications, including ultra-precise, portable, atomic clocks, and chip-sized devices that produce random numbers for use in secure networks. Europe shows first cards in €1-billion quantum bet 2018-10-28T04:00:00Z

The Sun’s role in dividing time features heavily — from the focus in ancient Norse mythology on the star’s daily journey across the sky, to the alignment of atomic clocks with astronomical time using leap seconds. Solar flair: the Sun on show 2018-10-16T04:00:00Z

The long radio wavelengths mean data from separated dishes can be recorded, digitized, time-stamped by an atomic clock, and combined later for analysis. Telescope array will spy on spy satellites, star surfaces and black holes 2018-07-03T04:00:00Z

Google would later use this method to synchronize computers based on GPS data and atomic clocks to make sure that their database system could correctly order transactions. Time Split to the Nanosecond Is Precisely What Wall Street Wants 2018-06-29T04:00:00Z

It is linked to other labs around Europe by fibre-optic cables that are used to synchronise the measurements of atomic clocks. Submarine cables could be repurposed as earthquake detectors 2018-06-16T04:00:00Z

Using atomic clocks on the satellites, the signal indicates when it was transmitted. GPS guidance can be fooled, so researchers are scrambling to find backup technologies 2018-03-15T04:00:00Z

The atomic clocks that mark official time lose the equivalent of just 1 second every 200 million years. With better atomic clocks, scientists prepare to redefine the second 2018-03-01T05:00:00Z

Air Force's STP-2, a variety pack of satellites that includes a hyper-accurate atomic clock designed for deep space and a network of satellites that will monitor Earth's atmosphere. Falcon Heavy Rocket Makes History With Successful First Launch 2018-02-06T05:00:00Z

Air Force to launch STP-2, a variety pack of satellites that includes a hyper-accurate atomic clock designed for deep space and a network of satellites that will monitor Earth's atmosphere. Why This Week’s Big Rocket Launch May Make History 2018-02-05T05:00:00Z

For decades, aerospace engineers have dreamed of using these consistently repeating signals for navigation, just as they use the regular ticking of atomic clocks on satellites for GPS. NASA Test Proves Pulsars Can Function as a Celestial GPS 2018-01-17T05:00:00Z

Incredibly precise atomic clocks detect differences in the amount of time it takes the light to traverse the legs. Nobel Physics Prize Goes to Gravitational Wave Scientists 2017-10-03T04:00:00Z

Another check involves comparing the ticking of different types of atomic clocks. With better atomic clocks, scientists prepare to redefine the second 2018-03-01T05:00:00Z

Most atomic clocks rely on a very steady tick: the frequency of fluorescent light emitted by cesium atoms after being excited by a microwave field. China’s atomic clock passes space test 2017-09-20T04:00:00Z

Some two centuries later, the Global Positioning System relies on satellites that carry highly synchronized atomic clocks providing precise measures of time. Metrology is key to reproducing results 2017-07-24T04:00:00Z

Would a simple mass do or would some form of atomic clock be better? Witness gravity’s quantum side in the lab 2017-07-10T04:00:00Z

Just as the Global Positioning System uses the ticks of satellites’ atomic clocks to triangulate a receiver’s position, pulsar navigation would use the arrival times of light from these regularly flashing stars. Neutron stars set to open their heavy hearts 2017-05-30T04:00:00Z

Refinements proved essential for the operation of atomic clocks. Hans Dehmelt (1922-2017) : Nature : Nature Research 2017-05-16T04:00:00Z

The other half went to Norman F. Ramsey, whose work on the structure of atoms and molecules led to the development of the atomic clock. Hans Dehmelt, Nobel Laureate for Isolating Electrons, Dies at 94 2017-04-09T04:00:00Z

GPS satellites typically house four atomic clocks, made from caesium or rubidium. Tick tock: The importance of knowing the right time - BBC News 2017-04-02T04:00:00Z

When atomic clocks became the world standard in the 1960s, they revealed that the Earth’s 24-hour rotation is marginally slowing. Opinion | The clock’s ticking for all of us, but nobody has a clue what it means 2017-03-31T04:00:00Z

This includes big hard drives to store colossal volumes of data, and atomic clocks to precisely timestamp it all. Event Horizon Telescope ready to image black hole - BBC News 2017-02-16T05:00:00Z

Today, the isolation, trapping and cooling of particles, ions and neutral atoms has paved the way for the construction of atomic clocks that are accurate to within a few seconds per 10 billion years. Hans Dehmelt (1922-2017) : Nature : Nature Research 2017-05-16T04:00:00Z

Each satellite carries an atomic clock and broadcasts timing signals. Hunting dark matter with GPS data 2017-01-30T05:00:00Z

UTC is based on atomic clocks, which measure oscillations in the energy levels of electrons, and are accurate to within a second every hundred million years. Tick tock: The importance of knowing the right time - BBC News 2017-04-02T04:00:00Z

Naval Observatory and its ensemble of 70 atomic clocks. Opinion | The clock’s ticking for all of us, but nobody has a clue what it means 2017-03-31T04:00:00Z

As regular as an atomic clock, the president-elect early Monday returned fire. Meryl Streep 'over-rated'? Donald Trump fires the latest salvo in the culture wars 2017-01-09T05:00:00Z

Instead, they are decreed by the International Earth Rotation and Reference Systems Service, or IERS, in Paris, which measures Earth’s rotation and compares it with the time kept by atomic clocks. 2017 leapt into the new year with an extra second of time 2017-01-01T05:00:00Z

But an atomic clock works by measuring just such a frequency. Hunting dark matter with GPS data 2017-01-30T05:00:00Z

But perhaps the most significant impact of the atomic clock - as in the past with ships and trains - has been on travel. Tick tock: The importance of knowing the right time - BBC News 2017-04-02T04:00:00Z

More constant than the earth’s rotation are atomic clocks, which measure the regular and super-precise vibration of cesium atoms. Just Want 2016 to End Already? You'll Have to Wait Another Second 2016-12-30T05:00:00Z

The change is required because standard time lags behind atomic clocks. New Year delayed by one second - BBC News 2016-12-30T05:00:00Z

Instead, they are decreed by the International Earth Rotation and Reference Systems Service, which measures Earth’s rotation and compares it with the time kept by atomic clocks. 2017 leapt into the new year with an extra second of time 2017-01-01T05:00:00Z

So were a GPS satellite to pass through a topological defect, the defect should cause the satellite’s atomic clock to skip a beat. Hunting dark matter with GPS data 2017-01-30T05:00:00Z

It will be the 27th occasion the NPL has brought in a leap second to ensure that time based on the Earth’s rotation does not lag behind time kept by atomic clocks. New Year's Eve countdown to take second longer than normal 2016-12-30T05:00:00Z

Such a clock would be much more stable than the conventional atomic clocks in use today. 'Dead or alive' cat in physics top 10 - BBC News 2016-12-13T05:00:00Z

Most interestingly perhaps for a layperson, the space station will carry an atomic clock which Xinhua news agency said will only lose one second every 30 million years. China set to launch second trial space station - BBC News 2016-09-15T04:00:00Z

Among the major projects of the Physics Laboratory have been the development of a space-based atomic clock that could be 10 times more accurate than atomic clocks on Earth, and improving techniques for mammography. Katharine B. Gebbie, physicist who supervised four Nobel laureates, dies at 84 2016-08-28T04:00:00Z

One jump in one atomic clock wouldn’t be proof enough for topological defects. Hunting dark matter with GPS data 2017-01-30T05:00:00Z

The speaking clock gets its time from the atomic clocks at the National Physical Laboratory, the UK's official time-keeper. Competition launched to find new voice of speaking clock - BBC News 2016-08-22T04:00:00Z

Today, satellites controlled from Schriever Air Force Base in Colorado transmit a constant signal emitted by their atomic clocks. Donald Trump, Hillary Clinton, Zika Virus: Your Tuesday Briefing 2016-08-02T04:00:00Z

Without leap seconds, the differences between official time as kept by atomic clocks and a day as defined by Earth’s rotation would slowly pile up. 2016 Will Be One Second Longer Than Expected

Because Earth is slowing down a tad, occasionally timekeepers insert another second or two to match Earth's rotation and the precise atomic clocks. Delay those New Year's plans: 2016 is getting a leap second 2016-07-06T04:00:00Z

Because Earth is slowing down a tad, occasionally timekeepers insert another second or two to match Earth’s rotation and the precise atomic clocks. Delay those New Year's plans: 2016 is getting a leap second 2016-07-06T04:00:00Z

Each satellite carries a precise atomic clock and transmits the time as an encoded signal. New Directions 2016-06-24T04:00:00Z

This has involved integrating a pan-European supply of components, including the all-important Swiss atomic clocks that drive Galileo's signals. SSTL ships 'last' navigation payload for Galileo - BBC News 2016-05-13T04:00:00Z

The atomic clocks aboard the satellites, synchronized to within nanoseconds, are used to link clocks over large geographic distances. What Would Happen If G.P.S. Failed? 2016-05-06T04:00:00Z

It is also likely to require new technologies to synchronize both ends — using atomic clocks, for example. Physics: Unite to build a quantum Internet 2016-04-11T04:00:00Z

Leap Second : Every few years, the official timekeepers of the world add one second to atomic clocks, keeping them in sync with astronomical time based on the rotation of the Earth. Gas Is Still Cheap. Turkeys Are Fat. The Year Is Done. Watch for That Broken Bat. 2015-12-18T05:00:00Z

Most countries, including China, the United States and many in Europe, favour scrapping the leap second and basing utc on the continuous tick of atomic clocks. Leap-second decision delayed by eight years 2015-11-19T05:00:00Z

Most existing atomic clocks work by shining microwave or radio light on atoms to set them oscillating. The Promise of Optical Atomic Clocks: Watch Live Wednesday [Video] 2015-11-03T05:00:00Z

The rack holds a high-precision, caesium atomic clock—the most accurate sort on the planet—and two other digital timepieces, called “grandmaster clocks”, that work alongside it. Stamp collectors 2015-10-29T04:00:00Z

The navigation payloads, including the atomic clocks that are at the heart of any sat-nav concept, are prepared in Guildford by Surrey Satellite Technology Limited. Two more Galileo satellites launched - BBC News 2015-09-10T04:00:00Z

The six beeps at the top of each hour are timed from an atomic clock housed in the basement of the BBC’s Broadcasting House. Clockwatchers ticked off as Big Ben's chimes run six seconds fast 2015-08-25T04:00:00Z

Could quantum 'clocks' tread two different paths to general relativity? how interference with atomic clocks might be destroyed by phase shifts induced by gravitational time dilation. Physics Week in Review: August 8, 2015 2015-08-08T04:00:00Z

Google mobile devices sync with internet time services that are usually tied to atomic clocks. World Will Gain a Leap Second on Tuesday: Here's Why 2015-06-29T04:00:00Z

To do so, a caesium atomic clock is synchronised with the main standard at the NPL and then carried to the place where it will be installed. Stamp collectors 2015-10-29T04:00:00Z

Scientists add a second — a leap second — to the atomic clock today after 11:59 p.m. and before midnight U.T.C. Your Tuesday Briefing 2015-06-30T04:00:00Z

If you happen to be awake, and gazing at the dial on an atomic clock, it will read 23:59:60 before ticking forward to 00.00.00. 'Leap second' to pause clocks at midnight as entire planet gains a second 2015-06-30T04:00:00Z

Midnight will come later tonight as for the first time in three years an extra second is added to the official time set by atomic clocks. 'Leap second' added for first time in three years - BBC News 2015-06-29T04:00:00Z

An atomic clock based on cesium ticks away at the German National Metrology Institute in northern Germany. World Will Gain a Leap Second on Tuesday: Here's Why 2015-06-29T04:00:00Z

Others buy cheap atomic clocks to do their timing. Stamp collectors 2015-10-29T04:00:00Z

While that might not seem like a lot, when you add up all the additionally milliseconds over a year or more, they start to matter - especially in the era of atomic clocks. Week in Geek: leap second edition 2015-06-28T04:00:00Z

The addition of a “leap second” is designed to allow the Earth’s rotation, which is gradually slowing, to catch up with atomic clocks, keeping official time neatly in sync with night and day. 'Leap second' to pause clocks at midnight as entire planet gains a second 2015-06-30T04:00:00Z

He sometimes toted a special crystal used to test atomic clocks, which provoked attention from security officers. Black Hole Hunters 2015-06-08T04:00:00Z

This kind of fine-tuning wasn't much of an issue before the invention of atomic clocks, whose ticks are defined by the cycling of atoms. World Will Gain a Leap Second on Tuesday: Here's Why 2015-06-29T04:00:00Z

Doing the same with optical atomic clocks would require a way to aggregate time at this precise level; using the fibre-optic method across oceans is not currently feasible. Hyper-precise atomic clocks face off to redefine time 2015-06-01T04:00:00Z

Currently, UTC is set using atomic clocks that measure the vibrational frequency of the element caesium, although these are only accurate in the region of one second in hundreds of millions of years. The most accurate clock ever built only loses one second every 15 billion years 2015-04-22T04:00:00Z

An indirect route is more likely, saving battery life by connecting periodically to through the iPhone to an Apple server that’s tuned to the atomic clocks. How the Apple Watch is changing the way we keep time 2015-03-09T04:00:00Z

In this case, there are antennas spread along the shore of infinity, synchronized by atomic clocks, recording the radio waves as they arrive. Black Hole Hunters 2015-06-08T04:00:00Z

They are used, for instance, in atomic clocks, fiber-optic communication, restorative eye surgery and supermarket bar-code readers. Charles H. Townes, Nobel laureate and laser pioneer, dies at 99 2015-01-28T05:00:00Z

International atomic time — on which coordinated universal time, or UTC, is based — is currently calculated by averaging measurements from hundreds of atomic clocks. Hyper-precise atomic clocks face off to redefine time 2015-06-01T04:00:00Z

But atomic clocks, which are now accurate up to quadrillionths of a second, don’t change pace. Adding a ‘leap second’ to the clock this year may cause computer problems 2015-01-12T05:00:00Z

On June 30th at precisely 23:59:59, the world’s atomic clocks will pause for a single second. 2015 is getting an extra second and that's a bit of a problem for the internet 2015-01-07T05:00:00Z

Ultra-precise atomic clocks and quantum computing are among the technologies getting a boost from the UK government. Four UK hubs to make 'spooky' quantum physics useful 2014-12-01T05:00:00Z

But every time a leap second needs to be inserted, all the atomic clocks across the world need to be changed. The element that redefined time 2014-10-03T04:00:00Z

Imagine a set of ten satellites orbiting Earth, each carrying its own atomic clock, says Kessler. Quantum network would be most precise clock yet 2014-06-14T04:00:00Z

New and improved atomic clock will measure our days: A revolution in time-keeping is coming. Physics Week in Review: April 5, 2014 2014-04-05T09:55:01Z

To Lister's dismay, it may have been the introduction of an atomic clock, and the addition of a "leap second", that actually gave life to the idea. The comforting tone of the hourly radio pips 2014-02-05T15:36:27Z

Naturehas a particular stake in the race to develop new atomic clocks. A question of time 2014-01-22T18:20:04.418Z

As it whirls, it emits a beam of radio waves that sweeps the sky as steadily as the ticking of an atomic clock. [News & Analysis] Rare Celestial Trio to Put Einstein's Theory to the Test 2014-01-09T18:55:10.161Z

The first is atomic clocks, which are becoming more precise as scientists improve ways of measuring superfast fluctuations in the energy states of charged particles or atoms. Quantum network would be most precise clock yet 2014-06-14T04:00:00Z

At the moment he’s busy building the world’s largest online retailer, running a space travel company, constructing an atomic clock that will last 10,000 years, and dabbling in drones. Can <em>Politico</em> Take Manhattan? 2013-12-05T11:00:19Z

Wineland, who works with atomic clocks and elements of quantum computing, told local media that they’re being allowed to do minimal work just to maintain equipment, but aren’t conducting any actual research. Meet Three Currently Furloughed Nobel Prize Winners 2013-10-14T13:17:00Z

Many aspects of everyday life from communication to navigation rely on the precise ticking of the microwave transitions of the atoms in atomic clocks. [Report] An Atomic Clock with 10–18 Instability 2013-09-12T17:56:52.633Z

When updating the atomic clocks, a special committee at the United Nations will decide whether or not it will keep adding an extra second to our clocks. AUDIO: Does the "leap second" matter? 2013-08-03T10:50:41Z

The devices, called optical lattice clocks, lost just one second every 300 million years - making them three times as accurate as current atomic clocks. Clock could 'redefine the second' 2013-07-10T01:29:02Z

A new atomic clock, which is the most accurate ever, uses ytterbium atoms and lasers to precisely define a second. 10 things we didn't know last week 2013-05-31T16:45:07Z

The upgraded versions offer greater accuracy, enhanced internal atomic clocks, better protection against signal jamming and a new signal for commercial aviation. Rocket blasts off from Florida carrying new GPS satellite 2013-05-16T00:33:29Z

A measurement comparing these systems demonstrates an unprecedented atomic clock instability of 1.6 × 10–18 after only 7 hours of averaging. [Report] An Atomic Clock with 10–18 Instability 2013-09-12T17:56:52.633Z

Compared with standard atomic clocks, which work differently, the new clock keeps lousy time. New Type of Clock Keeps Time by Weighing Atoms 2013-01-11T19:50:00Z

Furthermore, radio-occultation measurements depend only on the arrival of a signal, which can be timed using atomic clocks and easily compared between satellite systems and observing campaigns. Microsatellites aim to fill weather-data gap 2012-11-28T18:20:23.907Z

Modern-day atomic clocks are based on cesium atoms, which vibrate in the microwave range of frequencies, but visible light waves vibrate much faster than microwaves — every oscillation being a tick of the perfect clock. Nobel Physics Prize Goes to Haroche and Wineland 2012-10-10T19:58:54Z

Their work has implications for light-based clocks far more precise than the atomic clocks at the heart of the world's business systems, and quantum computing, which may - - revolutionise desktop computing as we know it. Quantum pioneers win Nobel prize 2012-10-09T09:52:35Z

For example, Dave’s work is leading to much more accurate atomic clocks. Nobel Prize in physics goes to federal scientist 2012-10-11T00:26:00Z

A standard atomic clock takes advantage of the fact that an atom can absorb electromagnetic radiation such as light at certain frequencies as its internal structure jumps from one "quantum state" to another. New Type of Clock Keeps Time by Weighing Atoms 2013-01-11T19:50:00Z

The work is already being used to build atomic clocks with unprecedented accuracy, says Immanuel Bloch, a physicist at the Max Planck Institute for Quantum Optics in Garching, Germany. Physics Nobel for quantum optics 2012-10-10T17:21:07.457Z

For example, several of the simple logic operations required for two-qubit gates can be employed in atomic clocks, which keep time based on the frequency of the radiation emitted when atoms transition between quantum states. Quantum Computing with Ions [Repost] 2012-10-09T18:15:00.540Z

Modern day atomic clocks are based on the cesium atoms, which vibrate in the microwave range of frequencies, but beryllium vibrates 100 times faster, in the visible range of frequencies. French and U.S. Scientists Win Nobel Physics Prize 2012-10-09T14:44:43Z

Their work is a crucial step towards building superfast quantum computers and could lead to ways of measuring time with a hundred times greater precision than is possible using atomic clocks. Physics Nobel prize awarded for crucial step towards quantum computing 2012-10-09T13:14:08Z

The atomic clocks that keep official world time are accurate to 3 parts in 1016, so they would gain or lose less than second in 100 million years. New Type of Clock Keeps Time by Weighing Atoms 2013-01-11T19:50:00Z

The most obvious applications of the measurement and manipulation of quantum systems are atomic clocks of unprecedented accuracy and the eventual advent of quantum computers. The Nobel Prize in Physics 2012-10-09T11:45:00.197Z

Friday morning, as determined by an atomic clock. Hidden trends to look for in the September jobs report 2012-10-04T14:44:00Z

Masers remain in use - in a form much like those of the early prototypes - in applications such as atomic clocks and as the amplifiers for the minuscule communication signals coming from space probes. Cousin of laser is a hot prospect 2012-08-16T10:42:59Z

Leap second bug causes technical problems for LinkedIn, other sites Reddit, and a number of other companies were hit with technical problems Saturday when a single “leap second” was added to the world’s atomic clocks. Google aims to defuse European antitrust investigation with new proposal 2012-07-02T23:03:00Z

The intention was to keep UTC on which atomic clocks run coordinated with the rotation of the Earth, which is gradually slowing down due to tidal effects from the moon. Leap second hits Qantas air bookings, while Reddit and Mozilla stutter 2012-07-02T11:02:19Z

Under an internationally recognized system, determined by scientists at the Paris Observatory, atomic clocks are adjusted every 18 months or so to keep the two measuring systems from diverging more than one second. IHT Rendezvous: The 61-Second Minute, But Blink and You'll Miss It 2012-06-30T13:42:47Z

Wait a second: on Saturday night atomic clocks will read 23 hours, 59 minutes and 60 seconds. 'Leap second' lengthens Saturday 2012-06-29T12:35:20Z

A so-called 'leap second' will be added to the world's atomic clocks as they undergo a rare adjustment to keep them in step with the slowing rotation of the earth. Enjoy the long weekend, if only for second 2012-06-29T11:22:42Z

On 22 February, the multinational collaboration announced that the errors related to the Global Positioning System signal used to synchronize the atomic clocks used in the experiment. Seven days: 24 February?1 March 2012 2012-02-29T18:20:34.583Z

Without it, the apparent time — say, when the sun is at high noon — would drift earlier and earlier, disagreeing with the time shown on official atomic clocks. Panel allows ?leap second? to keep clocks aligned with Earth?s rotation 2012-01-23T20:35:13Z

That prevents the time on atomic clocks from eventually moving ahead of the perceived pattern of night and day. IHT Rendezvous: The 61-Second Minute, But Blink and You'll Miss It 2012-06-30T13:42:47Z

A so-called "leap second" will be added to the world's atomic clocks as they undergo a rare adjustment to keep them in step with the slowing rotation of the Earth. 'Leap second' lengthens Saturday 2012-06-29T12:35:20Z

Super-accurate atomic clocks are the ultimate reference point by which the world sets its wrist watches. Enjoy the long weekend, if only for second 2012-06-29T11:22:42Z

One is the ticking of atomic clocks, defined by the precise frequency that electrons jump around in atoms. To Keep or Kill? Lowly Leap Second Focus of World Debate 2012-01-19T02:54:20Z

Their purpose is to match the relentless stream of regular 86,400-second days that pour out of atomic clocks with the slight irregularities that the Earth experiences in its rotation around its axis. Leap seconds: Their time has come 2012-01-12T16:04:23Z

Eastern Daylight Time when the extra second is added to the atomic clock at the U.S. IHT Rendezvous: The 61-Second Minute, But Blink and You'll Miss It 2012-06-30T13:42:47Z

Super-accurate atomic clocks are the ultimate reference point by which the world sets its wristwatches. 'Leap second' lengthens Saturday 2012-06-29T12:35:20Z

Subsequent experiments in both the U.S. and England in the 1950s led to the development of the cesium-beam atomic clock. A Chronicle of Timekeeping 2011-12-31T05:15:09.740Z

In 1967, the nations of the world changed things around, creating a new definition of a second based on atomic clocks and pegged to the length of an astronomical day in 1900. To Keep or Kill? Lowly Leap Second Focus of World Debate 2012-01-19T02:54:20Z

Eventually, atomic clocks would say it was midday in the middle of the night. Leap seconds: Their time has come 2012-01-12T16:04:23Z

Modern atomic clocks, however, are based on a consistent signal emitted by electrons within an atom. IHT Rendezvous: The 61-Second Minute, But Blink and You'll Miss It 2012-06-30T13:42:47Z

Financial systems use GPS receivers to get precise time stamps for transactions, relying on the atomic clocks onboard the satellites. Next generation of GPS satellites begins testing in Colorado; first launch expected 2014 2011-12-13T10:15:26Z

The performance of atomic clocks had been improving by a factor of at least 10 per decade for about 50 years. A Chronicle of Timekeeping 2011-12-31T05:15:09.740Z

His discoveries, which won him the Nobel prize, led to the caesium atomic clock and the hydrogen maser. Seven days: 4?10 November 2011 2011-11-15T17:20:24.403Z

When the ensemble of cesium beam and hydrogen maser atomic clocks strike 11:11 today at Boulder’s National Institute of Standards and Time nothing will happen. Does 11/11/11 Have Anything to do With Science? 2011-11-11T18:45:00.230Z

His investigations also led to the development of atomic clocks. Do You Use GPS? Say "Thanks" to Norman Ramsey (1915-2011) 2011-11-11T00:15:00.237Z

His method was used to develop the world’s most accurate timekeeper, the atomic clock. Nobel Prize-winning physicist Norman Ramsey dies at 96; work led to creation of atomic clock 2011-11-07T16:20:44Z

But over the past decade improvements in atomic clock accuracy have dramatically accelerated. A Chronicle of Timekeeping 2011-12-31T05:15:09.740Z

The technique allowed scientists to investigate their structure with greater accuracy and enabled the development of a new kind of timekeeping device known as the atomic clock. Norman Ramsey Dies at 96; Work Led to the Atomic Clock 2011-11-07T03:54:38Z

Similarly, leap seconds ensure that the time it takes Earth to spin 360 degrees is equal to one day as defined by humans and their atomic clocks. Leap Seconds May Hit a Speed Bump 2011-06-17T21:15:02.427Z

More rigorous applications, such as communications with interplanetary spacecraft or the tracking of ships and airplanes from satellites, rely on atomic clocks, which lose no more than a second over one million years. Do You Use GPS? Say "Thanks" to Norman Ramsey (1915-2011) 2011-11-11T00:15:00.237Z

The experiment, which will perform important synchronizations of atomic clocks around the world, is also supposed to test the gravitational redshift effect--but is capable of far less precision than the table-top experiment. Physicists Dispute Table-Top Relativity Test 2011-06-09T22:15:00.357Z

Several of these atomic clocks are already stable to within a few hundred femtoseconds per day and continue to rapidly improve. A Chronicle of Timekeeping 2011-12-31T05:15:09.740Z

But the most immediate application of the Ramsey method has been in the development of highly accurate atomic clocks. Norman Ramsey Dies at 96; Work Led to the Atomic Clock 2011-11-07T03:54:38Z

In order to keep the time determined by Earth's motion in line with the seconds measured by atomic clocks, the International Earth Rotation and Reference Systems Service inserts "leap seconds" into the calendar. Leap Seconds May Hit a Speed Bump 2011-06-17T21:15:02.427Z

The full article, titled “Accurate Measurement of Time,” reviews other kinds of atomic clocks and their pros and cons. Do You Use GPS? Say "Thanks" to Norman Ramsey (1915-2011) 2011-11-11T00:15:00.237Z

But no lighthouse can compete with a pulsar's reliability: The beams of some pulsars sweep through space with a regularity on par with the ticking of an atomic clock. Array of Hope: Australia and South Africa Vie for Massive Radio Telescope Project 2011-05-09T17:15:00.260Z

In addition to keeping time with increasing accuracy, new generations of atomic clocks will be used as exquisite sensors for myriad applications and will become ever smaller and more portable. A Chronicle of Timekeeping 2011-12-31T05:15:09.740Z

He drives the ball straight, he strikes his irons purely and he putts with the accuracy of an atomic clock. Luke Donald digs in to challenge at Doral going into final round 2011-03-13T00:16:39Z

Still another verification, if any more are needed, will almost certainly be obtained when an atomic clock in an artificial satellite is compared with one on the ground. Gravity, by George Gamow [Special Archive Article] 2011-03-04T13:45:00.433Z

Because uranium radioactively decays into lead over millions of years, the process acts as an atomic clock. Geologist claims a few dinosaurs survived extinction event 2011-01-29T23:06:02Z

The satellites are synchronized with atomic clocks to emit signals simultaneously. How to Use a Pulsar to Find Starbucks 2010-11-24T16:09:00Z

This new atomic clock is considered 30 times better than the current version and will lose only one second in 3 billion years. Federal Faces: Till Rosenband 2010-09-07T04:00:00Z

Rosenband, a physicist with the National Institute of Standards and Technology in Boulder, Colo., developed an atomic clock that is considered the world's most precise timepiece. Recognizing those who serve America, and their inventive ways 2010-05-06T04:00:00Z

It includes critical features such as the atomic clocks, the signal generation units, amplifiers and antennas. First Galileo payload despatched 2010-04-26T10:32:00Z

The principle has since been used to calibrate atomic clocks in global positioning satellites. Robert Pound, Physicist Whose Work Advanced Medicine, Is Dead at 90 2010-04-20T03:17:00Z

Pulsars, the dense leftovers of supernovae that sweep beams of radiation from their poles, serve as really good clocks, in some cases comparable to atomic clocks. How to Use a Pulsar to Find Starbucks 2010-11-24T16:09:00Z

Standing with me on the Prime Meridian in Greenwich, England, this winter — contemplating atomic clocks, accurate to billionths of a second — my father idly said: “I’m surprised the N.C.A.A. doesn’t use one yet.” How to Improve the N.C.A.A. Tournament 2010-04-01T23:44:00Z

Although many of us may not care if our watch is off by a minute or two, atomic clocks play an unseen role in our daily lives. Recognizing those who serve America, and their inventive ways 2010-05-06T04:00:00Z

What we want is the middle line, which tells you the exact Mountain Standard Time, as determined by a government-run atomic clock in Boulder, Colo. Big Dummy's Guide to the Internet

单词	atomic clock
例句	atomic clock On the contrary, there is an extremely wide range of experience—with nuclear accelerators and atomic clocks, for example—in precise quantitative agreement with special relativity. Cosmos 1980-01-01T00:00:00Z Fountain pens from Paris, chess sets from Iceland, atomic clocks from Austria, jewelry from Yugoslavia, masks from Burma. Black Swan Green 2006-04-10T00:00:00Z The codex was the perfect version of the Bible, a sort of atomic clock of Judaism, and intended to be the model for all subsequent copies. ?People Who Eat Darkness?: The disappearing blonde 2012-05-20T21:00:00Z “Black holes. The event horizon. The atomic clocks. Seeing the unseeable.” Don DeLillo, an Old Hand at Paranoia and Dread, Meets Us Where We Are 2020-10-12T04:00:00Z In the last century we have experienced the breaking of the sound barrier, the invention of the atomic clock, radio-controlled timekeeping, the internet, and pixelated clocks pulsing inexorably on our computers and phones. Still ticking: The improbable survival of the luxury watch business \| Simon Garfield 2016-10-19T04:00:00Z She dances, flops over a chair and slams home Coward’s zingers with the precision of an atomic clock, the panache of a seasoned comic. Angela Lansbury’s road, from ‘Murder, She Wrote’ to Noël Coward 2015-03-12T04:00:00Z "It could also enable futuristic chip-scale atomic clocks, which allows navigation when GPS is compromised or unavailable." Photonics team develops high-performance ultrafast lasers that fit on a fingertip 2023-11-09T05:00:00Z Scandium, an element used in aerospace components and sports equipment, enables an accuracy of one second in 300 billion years, or roughly a thousand times more precision than the current standard atomic clock. Milestone moment toward development of nuclear clock 2023-11-03T04:00:00Z So every few years since 1972, the two times have been synced by the insertion of leap seconds — pausing the atomic clocks briefly to let the astronomic one catch up. A Giant Leap for the Leap Second. Is Humankind Ready? 2023-11-03T04:00:00Z But the River Thames is perhaps the choice for the most special deliveries - including an optical atomic clock. Flotilla of boats carries atomic clock on Thames 2023-09-09T04:00:00Z Generally, the regularly timed ticking of a pulsar “clock” is so reliable that its accuracy rivals that of atomic clocks. Ultracold Gases Can Probe Neutron Star Guts 2023-07-18T04:00:00Z “We can create these models that basically let us know the time of arrival to precisions that rival atomic clocks,” says Thankful Cromartie, an astrophysicist at Cornell University and a member of NANOGrav. Scientists Thrill at First Hints of Cosmic ‘Hum’ from Giant Gravitational Waves 2023-06-28T04:00:00Z They were originally developed in the 1990s to make more accurate optical atomic clocks, for which the inventors won the 2005 Nobel Prize in Physics. Astronomy Tool Can Now Detect COVID in Breath 2023-05-12T04:00:00Z Time on Earth is precisely tracked by atomic clocks, but synchronizing time on the moon is tricky because clocks run faster there, gaining around 56 microseconds, or millionths of a second, per day. The Moon May Get Its Own Time Zone 2023-03-07T05:00:00Z While the space station doesn’t have its own time zone, it runs on Coordinated Universal Time, or UTC, which is meticulously based on atomic clocks. What time is it on moon? Europe pushing for lunar time zone 2023-02-28T05:00:00Z The alternative would be to use the synthesized output of the lunar atomic clocks as the Moon’s own independent, continuous time, and to track its relationship to UTC. What Time Is It on the Moon? 2023-01-26T05:00:00Z Jerrold Zacharias was a prominent nuclear physicist, a science advisor to President Eisenhower, and he developed the first atomic clock. Leona Zacharias Helped Solve a Blindness Epidemic Among Premature Babies. She Received Little Credit. 2023-01-12T05:00:00Z The combs can measure the natural oscillation of atoms so precisely that they have become an indispensable component of atomic clocks, which keep time incredibly well by counting these oscillations. Astronomy Tool Can Now Detect COVID in Breath 2023-05-12T04:00:00Z One of the experiments will be an extremely cold atomic clock. China Maps Out Plans to Put Astronauts on the Moon and on Mars 2022-12-12T05:00:00Z Its abandonment means that astronomical time, based on Earth’s rotation, will slowly diverge from Coordinated Universal Time, based on the vibrations of cesium in atomic clocks. News at a glance: Antibioticmaking clams, marijuana for research, and China’s ‘Friedmann’ 2022-11-30T05:00:00Z Coordinated Universal Time, or U.T.C., is tenderly constructed from readings made by atomic clocks kept at national laboratories around the world. Is Time Running Out for the Leap Second? 2022-11-14T05:00:00Z Its rotating crews of three astronauts will use the station to perform experiments and tests of new technologies, such as ultracold atomic clocks. Chinese Rocket Will Crash to Earth on November 5: Here’s What We Know 2022-11-03T04:00:00Z On board are more than 20 mini-laboratories fitted with centrifuges, cold chambers reaching temperatures as low as –80 °C, a high-temperature furnace, multiple lasers and an optical atomic clock. China’s Space Station Is Almost Complete—How Will Scientists Use It? 2022-11-03T04:00:00Z The module carries a wide range of experimental equipment, including extremely accurate atomic clocks and gear designed to create the coldest conditions ever achieved by humanity. China Launches Its Space Station’s Third and Final Module 2022-10-31T04:00:00Z Figure 1.18 An atomic clock such as this one uses the vibrations of cesium atoms to keep time to a precision of better than a microsecond per year. College Physics for AP Courses 2015-08-12T00:00:00Z Space Force, carries atomic clocks that provide time data, along with information about longitude, latitude and altitude. Is Time Running Out for the Leap Second? 2022-11-14T05:00:00Z Later, atomic clocks were taken up in high-flying aircraft and even on one of the Gemini space flights. Astronomy 2016-10-13T00:00:00Z Scientists in the 1960s began working with atomic clocks to measure time more accurately. NOT REAL NEWS: A look at what didn’t happen this week 2022-08-12T04:00:00Z Time and Date notes that the year 2020 had the highest number of short days since scientists started using atomic clocks to take daily measurements in the 1960s. Earth is spinning faster than it should be and no one is sure why 2022-08-05T04:00:00Z June 29 was 1.59 milliseconds shorter than usual — the shortest day since the 1960s when scientists began using atomic clocks to measure time, Forbes reported. Earth is spinning faster than usual, but why? Experts’ heads spin, too 2022-08-03T04:00:00Z As it started developing CAPSTONE, Advanced Space also decided to add a computer-chip-scale atomic clock to the spacecraft and compare that time with what is broadcast from Earth. NASA’s Return to the Moon Starts With Launching a 55-Pound Cube 2022-06-26T04:00:00Z In place of that logistical impossibility, the Event Horizon Telescope collects data via eight radio observatories in Greenland, Antarctica, and six other locations in between, synchronized to atomic clocks. Astronomers capture first image of supermassive black hole at our galaxy's center 2022-05-12T04:00:00Z The official length of a day, scientifically speaking, now compares the speed of one full rotation of the Earth to time taken by atomic clocks, Merkowitz said. NOT REAL NEWS: A look at what didn’t happen this week 2022-08-12T04:00:00Z “We’re going to stick this artificial atomic clock in the cavity and see if it still keeps good time.” To crack the mystery of dark matter, physicists turn to supersensitive quantum sensors 2022-04-27T04:00:00Z In addition, as weird as it may seem, we still tick through 1957-era seconds, even with our modern atomic clocks. Get Ready For the New, Improved Second 2022-04-25T04:00:00Z On Earth, astronomers see flashes hundreds of times a second from some pulsars, arriving as regularly as the ticks of an atomic clock. Astronomers find a new way to detect gravitational waves 2022-04-06T04:00:00Z As a timekeeping device, the light-based time crystal may be slightly less accurate than state-of-the-art atomic clocks. Time Crystals Made of Light Could Soon Escape the Lab 2022-03-09T05:00:00Z This is very close to modern calculations made with an atomic clock. World History: Patterns of Interaction 2012-01-01T00:00:00Z Improvements in atomic clocks, which undergird GPS, can improve navigation for weapons and targeting, for example. The Manhattan Project Shows Scientists’ Moral and Ethical Responsibilities 2022-03-02T05:00:00Z The redefinition is in the works because scientists have developed new instruments called optical atomic clocks. Get Ready For the New, Improved Second 2022-04-25T04:00:00Z This is already an issue because the atomic time for the world is a consensus of atomic clocks all over the world. How Measuring Time Shaped History 2022-01-28T05:00:00Z Dennis Owens, the witty voice of classical music radio in Washington whose rumbling bass voice could throw off the atomic clock, died Sept. 26 at a hospice center in Naples, Fla. He was 87. Dennis Owens, Washington’s classical wake-up man for four decades, dies at 87 2022-01-04T05:00:00Z Pulsars pulse with such metronomic regularity that the binary pair is like having two atomic clocks in orbit around each other. Double pulsar data helps Einstein’s theory of gravity pass toughest test yet 2021-12-14T05:00:00Z My grandfather, Jerrold Zacharias, was a well-known atomic physicist at MIT who invented the atomic clock and worked on the Manhattan Project, and also changed the way physics was taught in schools. The Lost Women of Science, Episode 1: The Question Mark 2021-11-04T04:00:00Z In all, about 20 or 30 optical atomic clocks of all species exist today, Donley said. Get Ready For the New, Improved Second 2022-04-25T04:00:00Z By 1955, an atomic clock was accurate to one second every 300 years; in the 1980s Britain’s National Physical Laboratory made atomic clocks accurate within one second every 300,000 years. Review \| How time was measured, and what it meant, across the centuries 2021-09-02T04:00:00Z Entanglement could synchronize atomic clocks and prevent the delays and errors that accumulate as information is sent between them. New internet woven from ‘spooky’ quantum links could supercharge science and commerce 2021-06-03T04:00:00Z A pulsar’s strong magnetic field can create a beam of radiation that swings around, repeatedly sweeping past the Earth with a regularity that rivals the accuracy of atomic clocks. Galaxy-Size Gravitational-Wave Detector Hints at Exotic Physics 2021-02-03T05:00:00Z The scientists imagine measuring a quantum atomic clock experiencing two different times while it is placed in superposition—a quirk of quantum mechanics in which something appears to exist in two places at once. Quantum Time Twist Offers a Way to Create Schrödinger’s Clock 2020-10-23T04:00:00Z And this is where the optical atomic clock’s secret weapon kicks in. Get Ready For the New, Improved Second 2022-04-25T04:00:00Z For qubits, we use particular states of ytterbium-171 that are so stable that they are widely used for atomic clocks. Quantum computing: ‘the best data we have ever seen’ thanks to shutdown 2020-06-29T04:00:00Z When I was a kid, I loved all clocks — atomic clocks, clock radios, even clocks you couldn’t see. How Analog Clocks Can Give Us More by Giving Us Less 2020-05-05T04:00:00Z Moreover, the atoms must be held in traps, so that their motion is almost completely frozen — in other words, the operation of atomic clocks requires precision manipulation of quantum systems. Mass spectrometry for future atomic clocks 2020-05-05T04:00:00Z Researchers must observe simultaneously with all the telescopes and synchronize the data recorded on computer disks at each site with the best atomic clocks. A New Map of the Milky Way 2020-03-17T04:00:00Z This enables optical atomic clocks to measure time far more precisely than cesium clocks. Get Ready For the New, Improved Second 2022-04-25T04:00:00Z The information is provided by cesium atomic clocks and is accurate within less than 0.0001 milliseconds. These radio stations don’t play news, talk shows or music. But they do broadcast very, very accurate time signals. 2020-01-24T05:00:00Z It’s the difference between an atomic clock and a human heart. Perspective \| D.C.-area musicians will gather in memory of drummer Robbie Magruder 2019-12-23T05:00:00Z GPS was, and continues to be, a tremendous feat of engineering that required the development of new satellites, atomic clocks and GPS receivers. A Pioneer of GPS Passes Away 2019-12-02T05:00:00Z Modern atomic clocks are marvels of accuracy, but they lack the guaranteed long-term stability of time crystals. The Exquisite Precision of Time Crystals 2019-10-16T04:00:00Z If several optical atomic clocks could be placed in different parts of the world, geodesists could measure ticking differences between them, and therefore differences in height and the gravitational field, he said. Get Ready For the New, Improved Second 2022-04-25T04:00:00Z Constructing the image was a huge coordinated effort using eight telescopes around the world, synchronized by atomic clocks. Daily briefing: First-ever image of a black hole wins Breakthrough Prize 2019-09-05T04:00:00Z The EHT team made simultaneous observations on eight telescopes around the world, synchronized by atomic clocks to an accuracy of better than one second in 100 million years. First ever picture of a black hole scoops US$3-million prize 2019-09-04T04:00:00Z In 2017, Yue allegedly tried to purchase another cesium atomic clock, this time representing that it would be used at a calibration laboratory in California. South El Monte man charged with illegally exporting cesium atomic clocks 2019-06-28T04:00:00Z The rideshare features a deep space atomic clock, solar sail, a clean and green rocket fuel testbed and even human ashes. 10 Things to Know for Today 2019-06-25T04:00:00Z Using very long baseline interferometry, researchers in Italy and Japan recently tried to link two optical atomic clocks about 5,500 miles apart. Get Ready For the New, Improved Second 2022-04-25T04:00:00Z The middle-of-the-night rideshare features a deep space atomic clock, solar sail, clean and green rocket fuel, and even human ashes, including an astronaut's. SpaceX launches hefty rocket with 24 satellites, human ashes 2019-06-25T04:00:00Z The middle-of-the-night rideshare features a deep space atomic clock, solar sail, clean and green rocket fuel, and even human ashes, including an astronaut’s. SpaceX launches hefty rocket with 24 satellites 2019-06-25T04:00:00Z Cesium atomic clocks are precision devices that measure time using the frequency of atomic emissions from the element cesium, according to a website maintained by the U.S. South El Monte man charged with illegally exporting cesium atomic clocks 2019-06-28T04:00:00Z And this time, it’s carrying a host of new technologies into space, ranging from a new type of atomic clock to a thin sail that moves on sunlight. An atomic clock, "green" propellant, and a sunlight-surfing sail are headed to space next week 2019-06-21T04:00:00Z The experiment involved several antennas reading radio signals from distant outer space, and then linking the information to atomic clocks. Get Ready For the New, Improved Second 2022-04-25T04:00:00Z Researchers needed to install atomic clocks precise enough to match up their observations down to the microsecond. See a black hole for the first time in a historic image from the Event Horizon Telescope 2019-04-10T04:00:00Z A total of 4 petabytes were recorded, each reading time-stamped using an atomic clock. First-ever picture of black hole revealed 2019-04-10T04:00:00Z Observations at the different sites were coordinated using atomic clocks, called hydrogen masers, accurate to within one second every 100 million years. Black hole picture captured for first time in space ‘breakthrough’ 2019-04-10T04:00:00Z A new atomic clock goes to space On board one of the Falcon Heavy’s satellites is a small clock the size of a toaster. An atomic clock, "green" propellant, and a sunlight-surfing sail are headed to space next week 2019-06-21T04:00:00Z They do this using time signals from GPS satellites’ ultra-precise atomic clocks. GPS glitch threatens thousands of scientific instruments 2019-04-02T04:00:00Z There is good reason to think that, with further development, arrays of single two-valence-electron atoms will lead to advances in optical atomic clocks. The next step in making arrays of single atoms 2019-03-24T04:00:00Z According to his calculations, a magnitude 9 temblor would release enough energy so that the resulting change in the gravitational acceleration of the earthquake’s sound wave might be measurable using atomic clocks. Sound by the Pound: Surprising Discovery Hints Sonic Waves Carry Mass 2019-03-11T04:00:00Z A global network of atomic clocks could be used to detect flaws in the fabric of space-time that could explain dark matter. Daily briefing: Chemist sent mercenaries to save her PhD student from ISIS 2018-12-13T05:00:00Z An atomic clock, on the other hand, measures how long it takes for small particles to transition from different states of energy. An atomic clock, "green" propellant, and a sunlight-surfing sail are headed to space next week 2019-06-21T04:00:00Z Metrologists are developing more precise atomic clocks that use optical radiation with higher frequencies than the current cesium standard. Metric system overhaul will dethrone the one, true kilogram 2018-11-06T05:00:00Z Some of the proposed technologies are relatively close to market applications, including ultra-precise, portable, atomic clocks, and chip-sized devices that produce random numbers for use in secure networks. Europe shows first cards in €1-billion quantum bet 2018-10-28T04:00:00Z The Sun’s role in dividing time features heavily — from the focus in ancient Norse mythology on the star’s daily journey across the sky, to the alignment of atomic clocks with astronomical time using leap seconds. Solar flair: the Sun on show 2018-10-16T04:00:00Z The long radio wavelengths mean data from separated dishes can be recorded, digitized, time-stamped by an atomic clock, and combined later for analysis. Telescope array will spy on spy satellites, star surfaces and black holes 2018-07-03T04:00:00Z Google would later use this method to synchronize computers based on GPS data and atomic clocks to make sure that their database system could correctly order transactions. Time Split to the Nanosecond Is Precisely What Wall Street Wants 2018-06-29T04:00:00Z It is linked to other labs around Europe by fibre-optic cables that are used to synchronise the measurements of atomic clocks. Submarine cables could be repurposed as earthquake detectors 2018-06-16T04:00:00Z Using atomic clocks on the satellites, the signal indicates when it was transmitted. GPS guidance can be fooled, so researchers are scrambling to find backup technologies 2018-03-15T04:00:00Z The atomic clocks that mark official time lose the equivalent of just 1 second every 200 million years. With better atomic clocks, scientists prepare to redefine the second 2018-03-01T05:00:00Z Air Force's STP-2, a variety pack of satellites that includes a hyper-accurate atomic clock designed for deep space and a network of satellites that will monitor Earth's atmosphere. Falcon Heavy Rocket Makes History With Successful First Launch 2018-02-06T05:00:00Z Air Force to launch STP-2, a variety pack of satellites that includes a hyper-accurate atomic clock designed for deep space and a network of satellites that will monitor Earth's atmosphere. Why This Week’s Big Rocket Launch May Make History 2018-02-05T05:00:00Z For decades, aerospace engineers have dreamed of using these consistently repeating signals for navigation, just as they use the regular ticking of atomic clocks on satellites for GPS. NASA Test Proves Pulsars Can Function as a Celestial GPS 2018-01-17T05:00:00Z Incredibly precise atomic clocks detect differences in the amount of time it takes the light to traverse the legs. Nobel Physics Prize Goes to Gravitational Wave Scientists 2017-10-03T04:00:00Z Another check involves comparing the ticking of different types of atomic clocks. With better atomic clocks, scientists prepare to redefine the second 2018-03-01T05:00:00Z Most atomic clocks rely on a very steady tick: the frequency of fluorescent light emitted by cesium atoms after being excited by a microwave field. China’s atomic clock passes space test 2017-09-20T04:00:00Z Some two centuries later, the Global Positioning System relies on satellites that carry highly synchronized atomic clocks providing precise measures of time. Metrology is key to reproducing results 2017-07-24T04:00:00Z Would a simple mass do or would some form of atomic clock be better? Witness gravity’s quantum side in the lab 2017-07-10T04:00:00Z Just as the Global Positioning System uses the ticks of satellites’ atomic clocks to triangulate a receiver’s position, pulsar navigation would use the arrival times of light from these regularly flashing stars. Neutron stars set to open their heavy hearts 2017-05-30T04:00:00Z Refinements proved essential for the operation of atomic clocks. Hans Dehmelt (1922-2017) : Nature : Nature Research 2017-05-16T04:00:00Z The other half went to Norman F. Ramsey, whose work on the structure of atoms and molecules led to the development of the atomic clock. Hans Dehmelt, Nobel Laureate for Isolating Electrons, Dies at 94 2017-04-09T04:00:00Z GPS satellites typically house four atomic clocks, made from caesium or rubidium. Tick tock: The importance of knowing the right time - BBC News 2017-04-02T04:00:00Z When atomic clocks became the world standard in the 1960s, they revealed that the Earth’s 24-hour rotation is marginally slowing. Opinion \| The clock’s ticking for all of us, but nobody has a clue what it means 2017-03-31T04:00:00Z This includes big hard drives to store colossal volumes of data, and atomic clocks to precisely timestamp it all. Event Horizon Telescope ready to image black hole - BBC News 2017-02-16T05:00:00Z Today, the isolation, trapping and cooling of particles, ions and neutral atoms has paved the way for the construction of atomic clocks that are accurate to within a few seconds per 10 billion years. Hans Dehmelt (1922-2017) : Nature : Nature Research 2017-05-16T04:00:00Z Each satellite carries an atomic clock and broadcasts timing signals. Hunting dark matter with GPS data 2017-01-30T05:00:00Z UTC is based on atomic clocks, which measure oscillations in the energy levels of electrons, and are accurate to within a second every hundred million years. Tick tock: The importance of knowing the right time - BBC News 2017-04-02T04:00:00Z Naval Observatory and its ensemble of 70 atomic clocks. Opinion \| The clock’s ticking for all of us, but nobody has a clue what it means 2017-03-31T04:00:00Z As regular as an atomic clock, the president-elect early Monday returned fire. Meryl Streep 'over-rated'? Donald Trump fires the latest salvo in the culture wars 2017-01-09T05:00:00Z Instead, they are decreed by the International Earth Rotation and Reference Systems Service, or IERS, in Paris, which measures Earth’s rotation and compares it with the time kept by atomic clocks. 2017 leapt into the new year with an extra second of time 2017-01-01T05:00:00Z But an atomic clock works by measuring just such a frequency. Hunting dark matter with GPS data 2017-01-30T05:00:00Z But perhaps the most significant impact of the atomic clock - as in the past with ships and trains - has been on travel. Tick tock: The importance of knowing the right time - BBC News 2017-04-02T04:00:00Z More constant than the earth’s rotation are atomic clocks, which measure the regular and super-precise vibration of cesium atoms. Just Want 2016 to End Already? You'll Have to Wait Another Second 2016-12-30T05:00:00Z The change is required because standard time lags behind atomic clocks. New Year delayed by one second - BBC News 2016-12-30T05:00:00Z Instead, they are decreed by the International Earth Rotation and Reference Systems Service, which measures Earth’s rotation and compares it with the time kept by atomic clocks. 2017 leapt into the new year with an extra second of time 2017-01-01T05:00:00Z So were a GPS satellite to pass through a topological defect, the defect should cause the satellite’s atomic clock to skip a beat. Hunting dark matter with GPS data 2017-01-30T05:00:00Z It will be the 27th occasion the NPL has brought in a leap second to ensure that time based on the Earth’s rotation does not lag behind time kept by atomic clocks. New Year's Eve countdown to take second longer than normal 2016-12-30T05:00:00Z Such a clock would be much more stable than the conventional atomic clocks in use today. 'Dead or alive' cat in physics top 10 - BBC News 2016-12-13T05:00:00Z Most interestingly perhaps for a layperson, the space station will carry an atomic clock which Xinhua news agency said will only lose one second every 30 million years. China set to launch second trial space station - BBC News 2016-09-15T04:00:00Z Among the major projects of the Physics Laboratory have been the development of a space-based atomic clock that could be 10 times more accurate than atomic clocks on Earth, and improving techniques for mammography. Katharine B. Gebbie, physicist who supervised four Nobel laureates, dies at 84 2016-08-28T04:00:00Z One jump in one atomic clock wouldn’t be proof enough for topological defects. Hunting dark matter with GPS data 2017-01-30T05:00:00Z The speaking clock gets its time from the atomic clocks at the National Physical Laboratory, the UK's official time-keeper. Competition launched to find new voice of speaking clock - BBC News 2016-08-22T04:00:00Z Today, satellites controlled from Schriever Air Force Base in Colorado transmit a constant signal emitted by their atomic clocks. Donald Trump, Hillary Clinton, Zika Virus: Your Tuesday Briefing 2016-08-02T04:00:00Z Without leap seconds, the differences between official time as kept by atomic clocks and a day as defined by Earth’s rotation would slowly pile up. 2016 Will Be One Second Longer Than Expected Because Earth is slowing down a tad, occasionally timekeepers insert another second or two to match Earth's rotation and the precise atomic clocks. Delay those New Year's plans: 2016 is getting a leap second 2016-07-06T04:00:00Z Because Earth is slowing down a tad, occasionally timekeepers insert another second or two to match Earth’s rotation and the precise atomic clocks. Delay those New Year's plans: 2016 is getting a leap second 2016-07-06T04:00:00Z Each satellite carries a precise atomic clock and transmits the time as an encoded signal. New Directions 2016-06-24T04:00:00Z This has involved integrating a pan-European supply of components, including the all-important Swiss atomic clocks that drive Galileo's signals. SSTL ships 'last' navigation payload for Galileo - BBC News 2016-05-13T04:00:00Z The atomic clocks aboard the satellites, synchronized to within nanoseconds, are used to link clocks over large geographic distances. What Would Happen If G.P.S. Failed? 2016-05-06T04:00:00Z It is also likely to require new technologies to synchronize both ends — using atomic clocks, for example. Physics: Unite to build a quantum Internet 2016-04-11T04:00:00Z Leap Second : Every few years, the official timekeepers of the world add one second to atomic clocks, keeping them in sync with astronomical time based on the rotation of the Earth. Gas Is Still Cheap. Turkeys Are Fat. The Year Is Done. Watch for That Broken Bat. 2015-12-18T05:00:00Z Most countries, including China, the United States and many in Europe, favour scrapping the leap second and basing utc on the continuous tick of atomic clocks. Leap-second decision delayed by eight years 2015-11-19T05:00:00Z Most existing atomic clocks work by shining microwave or radio light on atoms to set them oscillating. The Promise of Optical Atomic Clocks: Watch Live Wednesday [Video] 2015-11-03T05:00:00Z The rack holds a high-precision, caesium atomic clock—the most accurate sort on the planet—and two other digital timepieces, called “grandmaster clocks”, that work alongside it. Stamp collectors 2015-10-29T04:00:00Z The navigation payloads, including the atomic clocks that are at the heart of any sat-nav concept, are prepared in Guildford by Surrey Satellite Technology Limited. Two more Galileo satellites launched - BBC News 2015-09-10T04:00:00Z The six beeps at the top of each hour are timed from an atomic clock housed in the basement of the BBC’s Broadcasting House. Clockwatchers ticked off as Big Ben's chimes run six seconds fast 2015-08-25T04:00:00Z Could quantum 'clocks' tread two different paths to general relativity? how interference with atomic clocks might be destroyed by phase shifts induced by gravitational time dilation. Physics Week in Review: August 8, 2015 2015-08-08T04:00:00Z Google mobile devices sync with internet time services that are usually tied to atomic clocks. World Will Gain a Leap Second on Tuesday: Here's Why 2015-06-29T04:00:00Z To do so, a caesium atomic clock is synchronised with the main standard at the NPL and then carried to the place where it will be installed. Stamp collectors 2015-10-29T04:00:00Z Scientists add a second — a leap second — to the atomic clock today after 11:59 p.m. and before midnight U.T.C. Your Tuesday Briefing 2015-06-30T04:00:00Z If you happen to be awake, and gazing at the dial on an atomic clock, it will read 23:59:60 before ticking forward to 00.00.00. 'Leap second' to pause clocks at midnight as entire planet gains a second 2015-06-30T04:00:00Z Midnight will come later tonight as for the first time in three years an extra second is added to the official time set by atomic clocks. 'Leap second' added for first time in three years - BBC News 2015-06-29T04:00:00Z An atomic clock based on cesium ticks away at the German National Metrology Institute in northern Germany. World Will Gain a Leap Second on Tuesday: Here's Why 2015-06-29T04:00:00Z Others buy cheap atomic clocks to do their timing. Stamp collectors 2015-10-29T04:00:00Z While that might not seem like a lot, when you add up all the additionally milliseconds over a year or more, they start to matter - especially in the era of atomic clocks. Week in Geek: leap second edition 2015-06-28T04:00:00Z The addition of a “leap second” is designed to allow the Earth’s rotation, which is gradually slowing, to catch up with atomic clocks, keeping official time neatly in sync with night and day. 'Leap second' to pause clocks at midnight as entire planet gains a second 2015-06-30T04:00:00Z He sometimes toted a special crystal used to test atomic clocks, which provoked attention from security officers. Black Hole Hunters 2015-06-08T04:00:00Z This kind of fine-tuning wasn't much of an issue before the invention of atomic clocks, whose ticks are defined by the cycling of atoms. World Will Gain a Leap Second on Tuesday: Here's Why 2015-06-29T04:00:00Z Doing the same with optical atomic clocks would require a way to aggregate time at this precise level; using the fibre-optic method across oceans is not currently feasible. Hyper-precise atomic clocks face off to redefine time 2015-06-01T04:00:00Z Currently, UTC is set using atomic clocks that measure the vibrational frequency of the element caesium, although these are only accurate in the region of one second in hundreds of millions of years. The most accurate clock ever built only loses one second every 15 billion years 2015-04-22T04:00:00Z An indirect route is more likely, saving battery life by connecting periodically to through the iPhone to an Apple server that’s tuned to the atomic clocks. How the Apple Watch is changing the way we keep time 2015-03-09T04:00:00Z In this case, there are antennas spread along the shore of infinity, synchronized by atomic clocks, recording the radio waves as they arrive. Black Hole Hunters 2015-06-08T04:00:00Z They are used, for instance, in atomic clocks, fiber-optic communication, restorative eye surgery and supermarket bar-code readers. Charles H. Townes, Nobel laureate and laser pioneer, dies at 99 2015-01-28T05:00:00Z International atomic time — on which coordinated universal time, or UTC, is based — is currently calculated by averaging measurements from hundreds of atomic clocks. Hyper-precise atomic clocks face off to redefine time 2015-06-01T04:00:00Z But atomic clocks, which are now accurate up to quadrillionths of a second, don’t change pace. Adding a ‘leap second’ to the clock this year may cause computer problems 2015-01-12T05:00:00Z On June 30th at precisely 23:59:59, the world’s atomic clocks will pause for a single second. 2015 is getting an extra second and that's a bit of a problem for the internet 2015-01-07T05:00:00Z Ultra-precise atomic clocks and quantum computing are among the technologies getting a boost from the UK government. Four UK hubs to make 'spooky' quantum physics useful 2014-12-01T05:00:00Z But every time a leap second needs to be inserted, all the atomic clocks across the world need to be changed. The element that redefined time 2014-10-03T04:00:00Z Imagine a set of ten satellites orbiting Earth, each carrying its own atomic clock, says Kessler. Quantum network would be most precise clock yet 2014-06-14T04:00:00Z New and improved atomic clock will measure our days: A revolution in time-keeping is coming. Physics Week in Review: April 5, 2014 2014-04-05T09:55:01Z To Lister's dismay, it may have been the introduction of an atomic clock, and the addition of a "leap second", that actually gave life to the idea. The comforting tone of the hourly radio pips 2014-02-05T15:36:27Z Naturehas a particular stake in the race to develop new atomic clocks. A question of time 2014-01-22T18:20:04.418Z As it whirls, it emits a beam of radio waves that sweeps the sky as steadily as the ticking of an atomic clock. [News & Analysis] Rare Celestial Trio to Put Einstein's Theory to the Test 2014-01-09T18:55:10.161Z The first is atomic clocks, which are becoming more precise as scientists improve ways of measuring superfast fluctuations in the energy states of charged particles or atoms. Quantum network would be most precise clock yet 2014-06-14T04:00:00Z At the moment he’s busy building the world’s largest online retailer, running a space travel company, constructing an atomic clock that will last 10,000 years, and dabbling in drones. Can <em>Politico</em> Take Manhattan? 2013-12-05T11:00:19Z Wineland, who works with atomic clocks and elements of quantum computing, told local media that they’re being allowed to do minimal work just to maintain equipment, but aren’t conducting any actual research. Meet Three Currently Furloughed Nobel Prize Winners 2013-10-14T13:17:00Z Many aspects of everyday life from communication to navigation rely on the precise ticking of the microwave transitions of the atoms in atomic clocks. [Report] An Atomic Clock with 10–18 Instability 2013-09-12T17:56:52.633Z When updating the atomic clocks, a special committee at the United Nations will decide whether or not it will keep adding an extra second to our clocks. AUDIO: Does the "leap second" matter? 2013-08-03T10:50:41Z The devices, called optical lattice clocks, lost just one second every 300 million years - making them three times as accurate as current atomic clocks. Clock could 'redefine the second' 2013-07-10T01:29:02Z A new atomic clock, which is the most accurate ever, uses ytterbium atoms and lasers to precisely define a second. 10 things we didn't know last week 2013-05-31T16:45:07Z The upgraded versions offer greater accuracy, enhanced internal atomic clocks, better protection against signal jamming and a new signal for commercial aviation. Rocket blasts off from Florida carrying new GPS satellite 2013-05-16T00:33:29Z A measurement comparing these systems demonstrates an unprecedented atomic clock instability of 1.6 × 10–18 after only 7 hours of averaging. [Report] An Atomic Clock with 10–18 Instability 2013-09-12T17:56:52.633Z Compared with standard atomic clocks, which work differently, the new clock keeps lousy time. New Type of Clock Keeps Time by Weighing Atoms 2013-01-11T19:50:00Z Furthermore, radio-occultation measurements depend only on the arrival of a signal, which can be timed using atomic clocks and easily compared between satellite systems and observing campaigns. Microsatellites aim to fill weather-data gap 2012-11-28T18:20:23.907Z Modern-day atomic clocks are based on cesium atoms, which vibrate in the microwave range of frequencies, but visible light waves vibrate much faster than microwaves — every oscillation being a tick of the perfect clock. Nobel Physics Prize Goes to Haroche and Wineland 2012-10-10T19:58:54Z Their work has implications for light-based clocks far more precise than the atomic clocks at the heart of the world's business systems, and quantum computing, which may - - revolutionise desktop computing as we know it. Quantum pioneers win Nobel prize 2012-10-09T09:52:35Z For example, Dave’s work is leading to much more accurate atomic clocks. Nobel Prize in physics goes to federal scientist 2012-10-11T00:26:00Z A standard atomic clock takes advantage of the fact that an atom can absorb electromagnetic radiation such as light at certain frequencies as its internal structure jumps from one "quantum state" to another. New Type of Clock Keeps Time by Weighing Atoms 2013-01-11T19:50:00Z The work is already being used to build atomic clocks with unprecedented accuracy, says Immanuel Bloch, a physicist at the Max Planck Institute for Quantum Optics in Garching, Germany. Physics Nobel for quantum optics 2012-10-10T17:21:07.457Z For example, several of the simple logic operations required for two-qubit gates can be employed in atomic clocks, which keep time based on the frequency of the radiation emitted when atoms transition between quantum states. Quantum Computing with Ions [Repost] 2012-10-09T18:15:00.540Z Modern day atomic clocks are based on the cesium atoms, which vibrate in the microwave range of frequencies, but beryllium vibrates 100 times faster, in the visible range of frequencies. French and U.S. Scientists Win Nobel Physics Prize 2012-10-09T14:44:43Z Their work is a crucial step towards building superfast quantum computers and could lead to ways of measuring time with a hundred times greater precision than is possible using atomic clocks. Physics Nobel prize awarded for crucial step towards quantum computing 2012-10-09T13:14:08Z The atomic clocks that keep official world time are accurate to 3 parts in 1016, so they would gain or lose less than second in 100 million years. New Type of Clock Keeps Time by Weighing Atoms 2013-01-11T19:50:00Z The most obvious applications of the measurement and manipulation of quantum systems are atomic clocks of unprecedented accuracy and the eventual advent of quantum computers. The Nobel Prize in Physics 2012-10-09T11:45:00.197Z Friday morning, as determined by an atomic clock. Hidden trends to look for in the September jobs report 2012-10-04T14:44:00Z Masers remain in use - in a form much like those of the early prototypes - in applications such as atomic clocks and as the amplifiers for the minuscule communication signals coming from space probes. Cousin of laser is a hot prospect 2012-08-16T10:42:59Z Leap second bug causes technical problems for LinkedIn, other sites Reddit, and a number of other companies were hit with technical problems Saturday when a single “leap second” was added to the world’s atomic clocks. Google aims to defuse European antitrust investigation with new proposal 2012-07-02T23:03:00Z The intention was to keep UTC on which atomic clocks run coordinated with the rotation of the Earth, which is gradually slowing down due to tidal effects from the moon. Leap second hits Qantas air bookings, while Reddit and Mozilla stutter 2012-07-02T11:02:19Z Under an internationally recognized system, determined by scientists at the Paris Observatory, atomic clocks are adjusted every 18 months or so to keep the two measuring systems from diverging more than one second. IHT Rendezvous: The 61-Second Minute, But Blink and You'll Miss It 2012-06-30T13:42:47Z Wait a second: on Saturday night atomic clocks will read 23 hours, 59 minutes and 60 seconds. 'Leap second' lengthens Saturday 2012-06-29T12:35:20Z A so-called 'leap second' will be added to the world's atomic clocks as they undergo a rare adjustment to keep them in step with the slowing rotation of the earth. Enjoy the long weekend, if only for second 2012-06-29T11:22:42Z On 22 February, the multinational collaboration announced that the errors related to the Global Positioning System signal used to synchronize the atomic clocks used in the experiment. Seven days: 24 February?1 March 2012 2012-02-29T18:20:34.583Z Without it, the apparent time — say, when the sun is at high noon — would drift earlier and earlier, disagreeing with the time shown on official atomic clocks. Panel allows ?leap second? to keep clocks aligned with Earth?s rotation 2012-01-23T20:35:13Z That prevents the time on atomic clocks from eventually moving ahead of the perceived pattern of night and day. IHT Rendezvous: The 61-Second Minute, But Blink and You'll Miss It 2012-06-30T13:42:47Z A so-called "leap second" will be added to the world's atomic clocks as they undergo a rare adjustment to keep them in step with the slowing rotation of the Earth. 'Leap second' lengthens Saturday 2012-06-29T12:35:20Z Super-accurate atomic clocks are the ultimate reference point by which the world sets its wrist watches. Enjoy the long weekend, if only for second 2012-06-29T11:22:42Z One is the ticking of atomic clocks, defined by the precise frequency that electrons jump around in atoms. To Keep or Kill? Lowly Leap Second Focus of World Debate 2012-01-19T02:54:20Z Their purpose is to match the relentless stream of regular 86,400-second days that pour out of atomic clocks with the slight irregularities that the Earth experiences in its rotation around its axis. Leap seconds: Their time has come 2012-01-12T16:04:23Z Eastern Daylight Time when the extra second is added to the atomic clock at the U.S. IHT Rendezvous: The 61-Second Minute, But Blink and You'll Miss It 2012-06-30T13:42:47Z Super-accurate atomic clocks are the ultimate reference point by which the world sets its wristwatches. 'Leap second' lengthens Saturday 2012-06-29T12:35:20Z Subsequent experiments in both the U.S. and England in the 1950s led to the development of the cesium-beam atomic clock. A Chronicle of Timekeeping 2011-12-31T05:15:09.740Z In 1967, the nations of the world changed things around, creating a new definition of a second based on atomic clocks and pegged to the length of an astronomical day in 1900. To Keep or Kill? Lowly Leap Second Focus of World Debate 2012-01-19T02:54:20Z Eventually, atomic clocks would say it was midday in the middle of the night. Leap seconds: Their time has come 2012-01-12T16:04:23Z Modern atomic clocks, however, are based on a consistent signal emitted by electrons within an atom. IHT Rendezvous: The 61-Second Minute, But Blink and You'll Miss It 2012-06-30T13:42:47Z Financial systems use GPS receivers to get precise time stamps for transactions, relying on the atomic clocks onboard the satellites. Next generation of GPS satellites begins testing in Colorado; first launch expected 2014 2011-12-13T10:15:26Z The performance of atomic clocks had been improving by a factor of at least 10 per decade for about 50 years. A Chronicle of Timekeeping 2011-12-31T05:15:09.740Z His discoveries, which won him the Nobel prize, led to the caesium atomic clock and the hydrogen maser. Seven days: 4?10 November 2011 2011-11-15T17:20:24.403Z When the ensemble of cesium beam and hydrogen maser atomic clocks strike 11:11 today at Boulder’s National Institute of Standards and Time nothing will happen. Does 11/11/11 Have Anything to do With Science? 2011-11-11T18:45:00.230Z His investigations also led to the development of atomic clocks. Do You Use GPS? Say "Thanks" to Norman Ramsey (1915-2011) 2011-11-11T00:15:00.237Z His method was used to develop the world’s most accurate timekeeper, the atomic clock. Nobel Prize-winning physicist Norman Ramsey dies at 96; work led to creation of atomic clock 2011-11-07T16:20:44Z But over the past decade improvements in atomic clock accuracy have dramatically accelerated. A Chronicle of Timekeeping 2011-12-31T05:15:09.740Z The technique allowed scientists to investigate their structure with greater accuracy and enabled the development of a new kind of timekeeping device known as the atomic clock. Norman Ramsey Dies at 96; Work Led to the Atomic Clock 2011-11-07T03:54:38Z Similarly, leap seconds ensure that the time it takes Earth to spin 360 degrees is equal to one day as defined by humans and their atomic clocks. Leap Seconds May Hit a Speed Bump 2011-06-17T21:15:02.427Z More rigorous applications, such as communications with interplanetary spacecraft or the tracking of ships and airplanes from satellites, rely on atomic clocks, which lose no more than a second over one million years. Do You Use GPS? Say "Thanks" to Norman Ramsey (1915-2011) 2011-11-11T00:15:00.237Z The experiment, which will perform important synchronizations of atomic clocks around the world, is also supposed to test the gravitational redshift effect--but is capable of far less precision than the table-top experiment. Physicists Dispute Table-Top Relativity Test 2011-06-09T22:15:00.357Z Several of these atomic clocks are already stable to within a few hundred femtoseconds per day and continue to rapidly improve. A Chronicle of Timekeeping 2011-12-31T05:15:09.740Z But the most immediate application of the Ramsey method has been in the development of highly accurate atomic clocks. Norman Ramsey Dies at 96; Work Led to the Atomic Clock 2011-11-07T03:54:38Z In order to keep the time determined by Earth's motion in line with the seconds measured by atomic clocks, the International Earth Rotation and Reference Systems Service inserts "leap seconds" into the calendar. Leap Seconds May Hit a Speed Bump 2011-06-17T21:15:02.427Z The full article, titled “Accurate Measurement of Time,” reviews other kinds of atomic clocks and their pros and cons. Do You Use GPS? Say "Thanks" to Norman Ramsey (1915-2011) 2011-11-11T00:15:00.237Z But no lighthouse can compete with a pulsar's reliability: The beams of some pulsars sweep through space with a regularity on par with the ticking of an atomic clock. Array of Hope: Australia and South Africa Vie for Massive Radio Telescope Project 2011-05-09T17:15:00.260Z In addition to keeping time with increasing accuracy, new generations of atomic clocks will be used as exquisite sensors for myriad applications and will become ever smaller and more portable. A Chronicle of Timekeeping 2011-12-31T05:15:09.740Z He drives the ball straight, he strikes his irons purely and he putts with the accuracy of an atomic clock. Luke Donald digs in to challenge at Doral going into final round 2011-03-13T00:16:39Z Still another verification, if any more are needed, will almost certainly be obtained when an atomic clock in an artificial satellite is compared with one on the ground. Gravity, by George Gamow [Special Archive Article] 2011-03-04T13:45:00.433Z Because uranium radioactively decays into lead over millions of years, the process acts as an atomic clock. Geologist claims a few dinosaurs survived extinction event 2011-01-29T23:06:02Z The satellites are synchronized with atomic clocks to emit signals simultaneously. How to Use a Pulsar to Find Starbucks 2010-11-24T16:09:00Z This new atomic clock is considered 30 times better than the current version and will lose only one second in 3 billion years. Federal Faces: Till Rosenband 2010-09-07T04:00:00Z Rosenband, a physicist with the National Institute of Standards and Technology in Boulder, Colo., developed an atomic clock that is considered the world's most precise timepiece. Recognizing those who serve America, and their inventive ways 2010-05-06T04:00:00Z It includes critical features such as the atomic clocks, the signal generation units, amplifiers and antennas. First Galileo payload despatched 2010-04-26T10:32:00Z The principle has since been used to calibrate atomic clocks in global positioning satellites. Robert Pound, Physicist Whose Work Advanced Medicine, Is Dead at 90 2010-04-20T03:17:00Z Pulsars, the dense leftovers of supernovae that sweep beams of radiation from their poles, serve as really good clocks, in some cases comparable to atomic clocks. How to Use a Pulsar to Find Starbucks 2010-11-24T16:09:00Z Standing with me on the Prime Meridian in Greenwich, England, this winter — contemplating atomic clocks, accurate to billionths of a second — my father idly said: “I’m surprised the N.C.A.A. doesn’t use one yet.” How to Improve the N.C.A.A. Tournament 2010-04-01T23:44:00Z Although many of us may not care if our watch is off by a minute or two, atomic clocks play an unseen role in our daily lives. Recognizing those who serve America, and their inventive ways 2010-05-06T04:00:00Z What we want is the middle line, which tells you the exact Mountain Standard Time, as determined by a government-run atomic clock in Boulder, Colo. Big Dummy's Guide to the Internet
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