CO OZNACZA SŁOWO LEAP SECOND
Leap drugi
Druga sekunda skoku to jednorazowa korekta, która od czasu do czasu jest stosowana do skoordynowanego czasu uniwersalnego, aby utrzymać jej porę dnia w pobliżu średniego czasu słonecznego. Bez takiej korekty, czas poświęcony rotacji Ziemi odchodzi od czasu atomowego ze względu na nieprawidłowości w obrotach Ziemi. Ponieważ ten system korekty został wdrożony w 1972 r., Wprowadzono 25 takich krótkich sekund. Ostatnia aktualizacja odbyła się 30 czerwca 2012 r. O godzinie 23:59:60 UTC. Norma czasu UTC, powszechnie stosowana w międzynarodowych terminologiach i jako odniesienie do czasu cywilnego w większości krajów, wykorzystuje międzynarodową definicję systemu drugiej, opartą na zegarach atomowych. Podobnie jak większość standardów czasu, UTC definiuje pogrupowanie sekund w minuty, godziny, dni, miesiące i lata. Jednakże czas trwania jednego średniego dnia słonecznego jest nieco dłuższy niż 24 godziny. Dlatego też, jeśli dzień UTC został zdefiniowany jako dokładnie 86400 sekund SI, czas UTC dziennie powoli zmieniłby się poza standardami opartymi na energii słonecznej, na przykład czasem czasu Greenwich i jego następcą UT1.
Definicja słowa leap second w słowniku
Definicja sekundy przestępnej w słowniku to druga dodana do skali lub usunięta z niej w celu obliczenia czasu w danej sytuacji, w celu zsynchronizowania jej z inną skalą.
KSIĄŻKI POWIĄZANE ZE SŁOWEM «LEAP SECOND»
Poznaj użycie słowa
leap second w następujących pozycjach bibliograficznych Książki powiązane ze słowem
leap second oraz krótkie ich fragmenty w celu przedstawienia kontekstu użycia w literaturze.
1
Computer Network Time Synchronization: The Network Time Protocol
The obvious question raised by this scenario is what happens during the leap
second when NTP time stops and the clock remains unchanged. If the precision
time kernel modifications described in [8] and Chapter 8 have been implemented,
...
2
Server Time Protocol Planning Guide
To account for leap second corrections, the total accumulated number of leap
seconds since January 1972 must be entered when setting the time. Most sites
have little awareness of leap seconds and ongoing leap second adjustments,
and ...
Octavian Lascu, Hans-Peter Eckam, George Kozakos,
2013
3
Reference Data for Engineers: Radio, Electronics, Computer, ...
... of year) in a 10-20-40-80 weighting sequence. Bit 3 is used to indicate that a
leap second is to be inserted at the end of the current month. A " 1 " is transmitted
beginning early in the month at the end of which a leap second is to be inserted.
Wendy Middleton, Mac E. Van Valkenburg,
2002
4
A-GPS: Assisted GPS, GNSS, and SBAS
There are formal discussions about abolishing the leap second [23-25].
Meanwhile the great, and growing, majority of scientists and engineers working
with precise time simply have to deal with the offset between regular time
systems (such ...
Frank Stephen Tromp Van Diggelen,
2009
5
Server Time Protocol Implementation Guide
The user notices that the current leap second offset is set to 18 by mistake and
decides to set it to the currently correct value of 23, resulting in a positive 5-
second delta. Example 6-1 Positive leap second offset change STCK: ZONE=LT
...
Octavian Lascu, Hans-Peter Eckam, George Kozakos,
2014
6
Server Time Protocol Recovery Guide
When a negative leap second adjustment is made, z/OS processes the change
with immediate effect, resulting in a forward jump in UTC time by the amount of
the leap second adjustment. When a positive leap second adjustment is made, ...
Octavian Lascu, Hans-Peter Eckam, George Kozakos,
2014
7
Proceedings of the 26th Conference of Spacecraft TT&C ...
According to the arrangement of China's national GPS clock, the leap second
was added after the Beijing time 7:59:59 on July 1, 2012. The next second was
going to be 7:59:60. And then the time would get into 8:00:00. In this paper, the ...
Rongjun Shen, Weiping Qian,
2012
8
The IBOC Handbook: Understanding HD Radio Technology
SIS Parameter Number (Index) Parameter (16 bits) 000000 Leap second offset
Pending = 8 MSB, Current = 8 LSB 000001, 000010 GPS Time of pending
adjustment 16 LSB, 16 MSB, respectively 000011 Local Time Data 000100–
111111 ...
This is no war story; it's about a normal family man, who, like 1000's of other part time soldiers, just got mobilised... This is his moving story.
10
Splitting The
Second: The Story of Atomic Time
more than 0.6 seconds behind UTC and the first leap second was introduced at
the end of June. At the end of the year, UT1 was starting to fall behind again and
a second leap second was thought necessary, but that brought UT1 a full 0.81 ...
WIADOMOŚCI, KTÓRE ZAWIERAJĄ SŁOWO «LEAP SECOND»
Sprawdź, o czym dyskutuje się w prasie krajowej i zagranicznej oraz jak jest stosowane słowo
leap second w wiadomościach.
Just A Second: How the Futures Industry Association Prepared for …
As the Earth's rotation continues slowing down, keepers of the network of atomic clocks will add a so-called leap second every so often. «Associations Now, Lip 15»
Tim Yonke: Leap second made Tuesday a little longer
A crowd gathers to snap photos of a digital clock displaying 8:59:60 in Tokyo on July 1, marking the moment a leap second was added to the ... «Kankakee Daily Journal, Lip 15»
How Brands on Twitter Went Creative During the Leap Second
That is called a leap second! This has been the 27th adjustment since the practice began in 1972, reason being to keep our clocks in sync with ... «Business 2 Community, Lip 15»
Leap Second Causes Sporadic Outages Across the Internet
Yesterday's leap second caused “sporadic outages” in more than 2,000 networks that link machines across the Internet, according to a ... «Wired, Lip 15»
Attack of the Leap Second? Why Major Sites Vanished
UPDATE: The connectivity issue previously identified as a root cause for the outage was unrelated to the "leap second bug." The connectivity ... «NBC New York, Lip 15»
Leap Second confuses Twitter and Android
The software meltdown which experts feared would take place when a leap second was added to atomic clocks was not as widespread as ... «Telegraph.co.uk, Lip 15»
Leap Second: Horrific slight inconvenience at Amazon, Beats 1 …
"We have seen with these reported issues that this has been caused by a leap second bug within the instance operating system," said a ... «Inquirer, Lip 15»
Leap second brings no problems in Japanese stock, air traffic and …
Japan added a leap second to its reference clocks on Wednesday morning, with no major disruptions reported to systems such as stock ... «The Japan Times, Lip 15»
Qantas confident reservation systems won't suffer outage from leap …
Australian airline Qantas says it is confident its reservation systems will not suffer an outage from a leap second, which will be added to the ... «ABC Online, Cze 15»
7 things to know about tonight's leap second
Well, thanks to a leap second, this one just got a little longer. Right before the clock strikes midnight tonight Greenwich Mean Time (that's 7:59 ... «PBS NewsHour, Cze 15»