Εισάγετε μια λέξη ή φράση σε οποιαδήποτε γλώσσα 👆
Γλώσσα:
Μετάφραση και ανάλυση λέξεων από την τεχνητή νοημοσύνη ChatGPT
Σε αυτήν τη σελίδα μπορείτε να λάβετε μια λεπτομερή ανάλυση μιας λέξης ή μιας φράσης, η οποία δημιουργήθηκε χρησιμοποιώντας το ChatGPT, την καλύτερη τεχνολογία τεχνητής νοημοσύνης μέχρι σήμερα:
- πώς χρησιμοποιείται η λέξη
- συχνότητα χρήσης
- χρησιμοποιείται πιο συχνά στον προφορικό ή γραπτό λόγο
- επιλογές μετάφρασης λέξεων
- παραδείγματα χρήσης (πολλές φράσεις με μετάφραση)
- ετυμολογία
Τι (ποιος) είναι Universal Time 1 - ορισμός
TIME STANDARD BASED ON THE SLOWING ROTATION OF THE EARTH
Universal Standard Time; UT0; UT2; Ut1; UT1; UT1R; UT2R; UTC-SLS; Universal Time (UT); Universal time
Universal Time
¦ noun Greenwich Mean Time, as used internationally.
Universal Time
<time, standard> (UT) The mean solar time along the prime
meridian (0 longitude) that runs through the Greenwich
Observatory outside of London, UK, where the current system
originated. UT is tied to the rotation of the Earth in
respect to the fictitious "mean Sun".
Greenwich Mean Time (GMT) was measured from Greenwich mean
midday until 1925 when the reference point was changed from
noon to midnight and the name changed to "Universal Time".
There are three separate definitions, UT0, UT1, and UT2,
depending on which corrections have been applied to the
Earth's motion. Coordinated Universal Time is kept within
0.9 seconds of UT1, by addition of leap seconds to
International Atomic Time.
(2001-08-02)
Coordinated Universal Time
![Graph showing the difference [[DUT1]] between UT1 and UTC (in seconds). Vertical segments correspond to leap seconds.](https://commons.wikimedia.org/wiki/Special:FilePath/Leapsecond.ut1-utc.svg?width=200 "Graph showing the difference [[DUT1]] between UT1 and UTC (in seconds). Vertical segments correspond to leap seconds.")
PRIMARY TIME STANDARD
Universal Time Coordinated; Universal Coordinated Time; UTC(Internet); UTC Internet; UTC (Internet); Zulu time; Universal Time Coordinate; Coordinated universal time; Co-ordinated Universal Time; Co-ordinated universal time; Universal co-ordinated time; Utc; U.T.C; U.T.C.; ITU-R TF.460-4; Zulu Time; UTC time; Universal Time Coordination; UTC; Temps Universel Coordonné; Universal Time, Coordinated; History of UTC; Time in Space; Universal time coordinated; Universal Time Co-ordinated; Coordinated Universal Time (UTC)
<time, standard> (UTC, World Time) The standard time common to
every place in the world. UTC is derived from {International
Atomic Time} (TAI) by the addition of a whole number of "leap
seconds" to synchronise it with Universal Time 1 (UT1), thus
allowing for the eccentricity of the Earth's orbit, the
rotational axis tilt (23.5 degrees), but still showing the
Earth's irregular rotation, on which UT1 is based.
Coordinated Universal Time is expressed using a 24-hour clock
and uses the Gregorian calendar. It is used in aeroplane
and ship navigation, where it also sometimes known by the
military name, "Zulu time". "Zulu" in the phonetic alphabet
stands for "Z" which stands for longitude zero.
UTC was defined by the International Radio Consultative
Committee (CCIR), a predecessor of the ITU-T. CCIR
Recommendation 460-4, or ITU-T Recommendation X.680 (7/94),
contains the full definition.
The language-independent international abbreviation, UTC, is
neither English nor French. It means both "Coordinated
Universal Time" and "Temps Universel Coordonné".
{BIPM
(http://bipm.fr/enus/5_Scientific/c_time/time_1.html) }.
{time/time.html">The Royal Observatory Greenwich
(http://rog.nmm.ac.uk/leaflets/time/time.html) }.
{History of UTC and GMT
(http://ecco.bsee.swin.edu.au/chronos/GMT-explained.html) }.
{U.S. National Institute of Standards & Technology
(http://its.bldrdoc.gov/fs-1037/dir-009/_1277.htm) }.
{UK National Physical Laboratory
(http://npl.co.uk/npl/ctm/time_scales.html) }.
{US Naval Observatory
(http://tycho.usno.navy.mil/systime.html) }.
{International Telecommunications Union
(http://itu.int/radioclub/rr/arts02.htm) }.
{Earth's irregular rotation
(http://foldoc.org/pub/misc/earth_rotation) }.
(2001-08-30)
Βικιπαίδεια
Universal Time
Universal Time (UT or UT1) is a time standard based on Earth's rotation. While originally it was mean solar time at 0° longitude, precise measurements of the Sun are difficult. Therefore, UT1 is computed from a measure of the Earth's angle with respect to the International Celestial Reference Frame (ICRF), called the Earth Rotation Angle (ERA, which serves as a modern replacement for Greenwich Mean Sidereal Time). UT1 is the same everywhere on Earth. UT1 is required to follow the relationship
- ERA = 2π(0.7790572732640 + 1.00273781191135448 · Tu) radians
where Tu = (Julian UT1 date - 2451545.0).
