| 单词 | leap second |
| 例句 | Devised in 1972 and used 27 times since, the leap second wreaks havoc with modern-day telecommunications, banking, and other networks. News at a glance: Antibioticmaking clams, marijuana for research, and China’s ‘Friedmann’ 2022-11-30T05:00:00Z Since 1972, whenever the two time systems have drifted apart by more than 0.9 seconds, a leap second has been added. The Leap Second’s Time Is Up: World Votes to Stop Pausing Clocks 2022-11-22T05:00:00Z The time has come — or will come, in 2035 — to abandon the leap second. It’s Official: The Leap Second Will Be Retired (a Decade from Now) 2022-11-19T05:00:00Z To compensate for changes in the speed of the Earth’s rotation, metrologists in 1972 began occasionally inserting an extra second — a leap second — to the end of an atomic day. Your Tuesday Briefing 2022-11-15T05:00:00Z To compensate, starting in 1972, metrologists began occasionally inserting an extra second — a leap second — to the end of an atomic day. Is Time Running Out for the Leap Second? 2022-11-14T05:00:00Z If those measurements get too out of sync, the International Earth Rotation and Reference Systems Service, an organization that maintains global time, may fix the discrepancy by adding a leap second. NOT REAL NEWS: A look at what didn’t happen this week 2022-08-12T04:00:00Z Although human timepieces have been calibrated with Earth’s rotation for millennia, most people will feel little effect from the loss of the leap second. The Leap Second’s Time Is Up: World Votes to Stop Pausing Clocks 2022-11-22T05:00:00Z The leap second has caused trouble since its inception 50 years ago. It’s Official: The Leap Second Will Be Retired (a Decade from Now) 2022-11-19T05:00:00Z Now, the world’s time mavens are making a bold proposal: to abandon the leap second by 2035. Your Tuesday Briefing 2022-11-15T05:00:00Z Moreover, Earth’s rotation is slightly erratic, so the leap second is both irregular and unpredictable. Is Time Running Out for the Leap Second? 2022-11-14T05:00:00Z “Almost every time we have a leap second, we find something” This is not a joke scenario. Leap seconds cause chaos for computers — so Meta wants to get rid of them 2022-07-26T04:00:00Z Future metrologists might find more elegant ways than the leap second to realign UTC and UT1. The Leap Second’s Time Is Up: World Votes to Stop Pausing Clocks 2022-11-22T05:00:00Z With Russia’s concerns in mind, the leap second is not scheduled to be dropped until 2035, although it could happen sooner. It’s Official: The Leap Second Will Be Retired (a Decade from Now) 2022-11-19T05:00:00Z When atomic time gets nearly one second faster than astronomical time, the timekeepers stop it for a moment, allowing Earth to catch up — they insert a leap second in the year. Get Ready For the New, Improved Second 2022-04-25T04:00:00Z Fifty years ago, those qualities made inserting the leap second difficult. Is Time Running Out for the Leap Second? 2022-11-14T05:00:00Z By 2015, when the next leap second was due, engineers had mostly learned their lessons, but there were still some glitches. Leap seconds cause chaos for computers — so Meta wants to get rid of them 2022-07-26T04:00:00Z If the Earth's rotation continues to accelerate, scientists may be required to add a negative leap second to our clocks. Time flies: The Earth is rotating faster than expected 2021-01-08T05:00:00Z Steps remain in the elimination of the leap second. It’s Official: The Leap Second Will Be Retired (a Decade from Now) 2022-11-19T05:00:00Z After an initial insertion of 10 leap seconds in 1972, timekeepers now add a leap second to atomic time roughly every year and a half. Get Ready For the New, Improved Second 2022-04-25T04:00:00Z The process of squaring these two time scales has become so unruly that the world’s time mavens are making a bold proposal: to abandon the leap second by 2035. Is Time Running Out for the Leap Second? 2022-11-14T05:00:00Z This is why social media conglomerate Meta wants to get rid of the leap second. Leap seconds cause chaos for computers — so Meta wants to get rid of them 2022-07-26T04:00:00Z "There are also international discussions taking place about the future of leap seconds, and it's also possible that the need for a negative leap second might push the decision towards ending leap seconds for good." Time flies: The Earth is rotating faster than expected 2021-01-08T05:00:00Z For one, it’s hard to predict exactly when the next leap second will be needed, so computing networks cannot prepare for orderly, regular insertions. It’s Official: The Leap Second Will Be Retired (a Decade from Now) 2022-11-19T05:00:00Z Microsoft is also tweaking some of its existing emoji with both updates, and even adding in leap second support inside Windows to more accurately support the leap seconds that occur every 18 months. Microsoft starts testing next major Windows 10 update with new emoji and Mixed Reality Flashlight feature 2018-07-25T04:00:00Z The leap second is a dollop of potential chaos in a soufflé that demands precision. Is Time Running Out for the Leap Second? 2022-11-14T05:00:00Z At any rate, Meta isn’t suggesting any single solution to the problem of the leap second. Leap seconds cause chaos for computers — so Meta wants to get rid of them 2022-07-26T04:00:00Z Last night, the international timekeeping community tacked an additional second, known as a leap second, on to the last minute of 2016. 2017 leapt into the new year with an extra second of time 2017-01-01T05:00:00Z Eliminating the leap second is seen a way of preserving adherence to U.T.C. by making it a continuous time scale rather than one that is episodically interrupted. It’s Official: The Leap Second Will Be Retired (a Decade from Now) 2022-11-19T05:00:00Z A "leap second" will be added to the countdown to compensate for a slowdown in the Earth's rotation. New Year celebrations: NZ's Auckland first world city to welcome in 2017 - BBC News 2016-12-31T05:00:00Z For that reason, discarding the leap second has wide support from nations across the world, including the United States. Is Time Running Out for the Leap Second? 2022-11-14T05:00:00Z A "leap second" will be added to this year's New Year's countdown to compensate for a slowdown in the Earth's rotation. New Year delayed by one second - BBC News 2016-12-30T05:00:00Z Therefore, the future of the leap second is being hotly debated. 2017 leapt into the new year with an extra second of time 2017-01-01T05:00:00Z 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 Despite that lead time, about 10 percent of networks around the world fail in one way or another any time a leap second is added, he says. 2016 Will Be One Second Longer Than Expected The fate of the leap second has long been the stuff of high diplomatic drama, designated one of just four “hot topics” at the B.I.P.M. Is Time Running Out for the Leap Second? 2022-11-14T05:00:00Z The International Earth Rotation and Reference Systems Service in France tracks the Earth's rotation and announces the need for a leap second. New Year delayed by one second - BBC News 2016-12-30T05:00:00Z International timekeepers are adding a leap second at year's end. Delay those New Year's plans: 2016 is getting a leap second 2016-07-06T04:00:00Z International timekeepers are adding a leap second at year’s end. Delay those New Year's plans: 2016 is getting a leap second 2016-07-06T04:00:00Z The International Earth Rotation and Reference Systems Service previously added a leap second on June 30, 2015. 2016 Will Be One Second Longer Than Expected The fate of the leap second is more than just the fate of the leap second. Is Time Running Out for the Leap Second? 2022-11-14T05:00:00Z A leap second last occurred in June 2015 and this will be the 27th time it has occurred. New Year delayed by one second - BBC News 2016-12-30T05:00:00Z And in a way it did: When the latest leap second was added, nothing happened. Gas Is Still Cheap. Turkeys Are Fat. The Year Is Done. Watch for That Broken Bat. 2015-12-18T05:00:00Z A leap second is gone in the blink of an eye. Leap-second decision delayed by eight years 2015-11-19T05:00:00Z The last leap second was added on June 30; the time before that was in 2012. Hold on a second: International timekeepers punt decision on 'leap second' down the road 2015-11-19T05:00:00Z At stake is Coordinated Universal Time, the international standard for timekeeping, which the continued existence of the leap second is slowly undermining. Is Time Running Out for the Leap Second? 2022-11-14T05:00:00Z That’s because a so-called “leap second” was added to the clock, making the last day of June this year a second longer than usual. Northwestern MutualVoice: Making Time: How The U.S. Markets Were Affected By The Leap Second 2015-07-29T04:00:00Z There was a leap second this week, too, which freaked a few people out. Physics Week in Review: July 4, 2015 2015-07-04T04:00:00Z 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 The world's timekeepers will be adding a sliver of time—a leap second—to our clocks. World Will Gain a Leap Second on Tuesday: Here's Why 2015-06-29T04:00:00Z But the leap second is putting that tenet is at risk. Is Time Running Out for the Leap Second? 2022-11-14T05:00:00Z The so-called “leap second” is periodically added to our clocks to account for the gradual slowing of the Earth’s rotation, according to NASA. Here Are 21 Ways You Could Spend Your Precious Leap Second 2015-06-30T04:00:00Z Also: Think today’s leap second is ridiculously precise? Physics Week in Review: July 4, 2015 2015-07-04T04:00:00Z A small number of countries however, including Russia and the United Kingdom, want to keep the leap second. Leap-second decision delayed by eight years 2015-11-19T05:00:00Z "Once when that time arrives, and once again for the leap second." World Will Gain a Leap Second on Tuesday: Here's Why 2015-06-29T04:00:00Z To supporters of Resolution D, removing the leap second from U.T.C. would make the standard time scale friendlier to modern digital technology, at least in the century following 2035. Is Time Running Out for the Leap Second? 2022-11-14T05:00:00Z In the first few decades following the adoption of the leap second approach, UTC adjustments were made about once a year, but today’s leap second is only the fourth since 1999. As Earth's Spin Slows, Clocks Get Another Leap Second 2015-06-30T04:00:00Z There were also no shortage of companies, charities and other organisations jumping in on the hashtag, encouraging people to spend their leap second: What are you going to do with your leap second? - BBC News 2015-06-30T04:00:00Z Astronomers are among those who would be affected if the leap second were scrapped. Leap-second decision delayed by eight years 2015-11-19T05:00:00Z Not everyone recognizes the leap second, although Apple does so on its devices. World Will Gain a Leap Second on Tuesday: Here's Why 2015-06-29T04:00:00Z Even computing systems that continue to insert the leap second do so in different ways. Is Time Running Out for the Leap Second? 2022-11-14T05:00:00Z In 1972 a policy to add a small unit of time, called a leap second, to UTC was implemented to correct the minute discrepancies found using such precise measurements. As Earth's Spin Slows, Clocks Get Another Leap Second 2015-06-30T04:00:00Z Scientists say we need to add that second to the clock this year, in what is called a “leap second.” New York Today: Freedom From Foam 2015-06-30T04:00:00Z Whibberley says that that the biggest effect of these seemingly subtle changes will be to remove responsibility for defining UTC, and therefore the leap second from the ITU. Leap-second decision delayed by eight years 2015-11-19T05:00:00Z If they stopped their internal clocks for the leap second, they would get inaccurate positions. World Will Gain a Leap Second on Tuesday: Here's Why 2015-06-29T04:00:00Z And according to the Metrologia paper, the number of errors in implementing the leap second is increasing over time. Is Time Running Out for the Leap Second? 2022-11-14T05:00:00Z 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 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 In New York, where the leap second is scheduled to be added at around 8PM, stock markets are simply closing early to avoid headaches. The leap second is coming to confuse the internet today 2015-06-30T04:00:00Z The last leap second was added in 2012, but in the early 1980s, time scientists were adding them every year, Levine explains. World Will Gain a Leap Second on Tuesday: Here's Why 2015-06-29T04:00:00Z The leap second has been necessary because atomic time runs faster than Earth time. Is Time Running Out for the Leap Second? 2022-11-14T05:00:00Z The addition will mean that the last minute of June will have 61 seconds; while 23:59:59 usually becomes 00:00:00, the leap second will ensure the time becomes 23:59:60. 'Leap second' added for first time in three years - BBC News 2015-06-29T04:00:00Z Everyone’s day will be a second longer on Tuesday, thanks to the “leap second” added to our clocks to compensate for the gradual slowing in the Earth’s rotation. John Oliver: Here's How to Make Use of Your Spare 'Leap Second' Tomorrow 2015-06-29T04:00:00Z And to adjust for irregularities in Earth’s rotation, a leap second will be added June 30, says the U.S. Prepare to do any blue moon tasks at end of July 2015-06-27T04:00:00Z With each year that goes by, it takes an extra 14 microseconds for the Earth to complete its daily rotation, which is why we add a “leap second” to catch up every 18 months. Solar Eclipses Are Slowly Disappearing, And There's Nothing We Can Do To Stop It 2015-04-06T04:00:00Z But that is changing: Earth’s rotation rate, though slowing, began decelerating right around the time the leap second was invented. Is Time Running Out for the Leap Second? 2022-11-14T05:00:00Z The International Telecommunications Union, which sets international time standards, will vote on whether to keep the leap second in November 2015. Why the Upcoming 'Leap Second' Could Be a Big Headache for the Internet 2015-01-14T05:00:00Z The problem is that during the leap second, a computer’s clock shows 60 seconds instead of simply rolling over to the next minute, or it shows the 59th second twice. Adding a ‘leap second’ to the clock this year may cause computer problems 2015-01-12T05:00:00Z And that means every now and then an extra "leap second" is inserted. The element that redefined time 2014-10-03T04:00:00Z 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 By about 2030, if the trend persists, Earth time will overtake atomic time by about a second — so metrologists will have to insert a negative leap second to keep the two time scales in sync. Is Time Running Out for the Leap Second? 2022-11-14T05:00:00Z A 2012 leap second even led to 400 flight delays in Australia, forcing airport workers to conduct check-ins by hand rather than using computers. Why the Upcoming 'Leap Second' Could Be a Big Headache for the Internet 2015-01-14T05:00:00Z Another good way to avoid any trouble is to simply shut down a computer system for an hour or two around the leap second, Matsakis said. Adding a ‘leap second’ to the clock this year may cause computer problems 2015-01-12T05:00:00Z 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 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 first time in the history of U.T.C. that a negative leap second occurs, and nobody knows what to do,” Dr. Arias said. Is Time Running Out for the Leap Second? 2022-11-14T05:00:00Z However, technical glitches related to the leap second are relatively isolated. Why the Upcoming 'Leap Second' Could Be a Big Headache for the Internet 2015-01-14T05:00:00Z The leap second is a more subtle correction than a leap year. Adding a ‘leap second’ to the clock this year may cause computer problems 2015-01-12T05:00:00Z In a , Google explained how it planned to avoid the leap second issue by using a tactic it called a "leap smear". Web suffers weekend of weakness 2012-07-02T11:42:00Z More than 400 Qantas flights were delayed when the 'leap second' confused web servers on Sunday. Leap second hits Qantas air bookings, while Reddit and Mozilla stutter 2012-07-02T11:02:19Z The leap second, though less visible to the public, also elicits strong opinions. Is Time Running Out for the Leap Second? 2022-11-14T05:00:00Z In particular, apps and programs based on Unix, a popular open-source operating system, are susceptible to these problems because Unix predates the establishment of the leap second. Why the Upcoming 'Leap Second' Could Be a Big Headache for the Internet 2015-01-14T05:00:00Z This will be the 26th leap second added to a calendar year since the practice began in 1972. Adding a ‘leap second’ to the clock this year may cause computer problems 2015-01-12T05:00:00Z Millions were left without power after the massive lightning storm Several high-profile websites and services suffered over the weekend thanks to the leap second and huge storms. Web suffers weekend of weakness 2012-07-02T11:42:00Z "We believe this is relate to the leap second happening tonight because it happened at midnight GMT." Leap second hits Qantas air bookings, while Reddit and Mozilla stutter 2012-07-02T11:02:19Z The Vatican, for instance, has argued for keeping the leap second, on existential grounds. Is Time Running Out for the Leap Second? 2022-11-14T05:00:00Z This additional unit of time, dubbed a “leap second,” is meant to account for a naturally-occurring slowing of the Earth’s rotation. Why the Upcoming 'Leap Second' Could Be a Big Headache for the Internet 2015-01-14T05:00:00Z Some fine-tuning is needed every so often, and a leap second is added in June or December. Adding a ‘leap second’ to the clock this year may cause computer problems 2015-01-12T05:00:00Z A leap second that was added in 2005 caused enough problems for that it invented a special solution. Earth's rotation slows, breaks Internet 2012-07-02T05:35:05Z Then, at 8 PM EDT, Saturday night, a regularly scheduled ‘leap second’ caused further havoc. Holy Mini-Y2K! 'Leap Second' Also Took Down Major Sites This Weekend 2012-07-02T04:45:12Z Dr. Tavella and her colleagues consulted with Dr. Gabor recently as they sought to navigate the implications of suspending the leap second. Is Time Running Out for the Leap Second? 2022-11-14T05:00:00Z As my colleague Kenneth Chang has written, the United States is the primary proponent for doing away with the leap second. 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 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 The leap second lives on — for another three years, at least. Panel allows ?leap second? to keep clocks aligned with Earth?s rotation 2012-01-23T20:35:13Z To avoid the safety hazards associated with losing crucial time-keeping signals, most satellite navigation systems already maintain their own internal clocks, and they don't use the leap second. Leap Second Granted Extra Time 2012-01-20T20:45:06.070Z The leap second survives — for at least three more years. The Leap Second?s Reprieve 2012-01-19T22:04:03Z Japan, Canada, Italy, Mexico and France argued for scrapping the leap second once and for all. It's Official: The Leap Second Is Saved! 2012-01-19T23:06:31Z Britain's Royal Astronomical Society says the leap second should be retained until there is a much broader debate on the change. Enjoy the long weekend, if only for second 2012-06-29T11:22:42Z In Geneva, 700 delegates from about 70 nations attending a meeting of a telecommunications agency will decide whether to abolish the leap second. To Keep or Kill? Lowly Leap Second Focus of World Debate 2012-01-19T02:54:20Z The deviation of the leap second is about 1 minute and 30 seconds per century. Time for decision on removing leap seconds 2012-01-17T20:07:38Z So the leap second was introduced, to push together Earth rotation time and atomic vibration time.” UN Vote Could Allow Mankind to Control the Sun: Richard Cohen 2011-12-22T22:31:37Z At issue is whether to abolish the 'leap second'--the extra second added every year or so to keep UTC in step with Earth's slightly unpredictable orbit. 'Leap Second' Could Be Abolished 2011-11-08T22:15:06.630Z Although the organization did not participate in the creation of the current leap second system, the radio waves it regulates are used to transmit UTC, giving it some influence. Leap Seconds May Hit a Speed Bump 2011-06-17T21:15:02.427Z Abolishing the leap second “removes one potential source of catastrophic failure for the world’s computer networks,” said Geoff Chester, a spokesman for the United States Naval Observatory, the nation’s primary timekeeper. To Keep or Kill? Lowly Leap Second Focus of World Debate 2012-01-19T02:54:20Z Britain is the staunchest defender of the leap second, backed by China and Canada with tacit support from Russia, while the United States and France are leading the call for its abolition, they said. Time for decision on removing leap seconds 2012-01-17T20:07:38Z |
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