Though now largely replaced by atomic time (UTC) it is still seen as the correct time for every International Time Zone.
What does AT stand for?
AT stands for Atomic Time
This definition appears very frequently and is found in the following Acronym Finder categories:
- Military and Government
See other definitions of AT
We have 123 other meanings of AT in our Acronym Attic
- Astrometry Team
- Astronomy Tower (fanfiction)
- Asynchronous Terminal
- Asynchronous Transmission
- Atlantic Time
- Atmospheric Transmission
- Atomic Terrorism
Samples in periodicals archive:
Time is measured in two ways: solar time relative to the earth's rotation and atomic time based on measurements of the internal oscillations in atoms.
As a result, Earth gets out of step with International Atomic Time (TAI), which uses the pulsation of atoms to measure time to an accuracy of several billionths of a second.
The watch is the first analogue chronograph capable of receiving time signals on radio wave and automatically adjusts the time to the most accurate time which is the atomic time.
To stop things getting out of hand, the International Telecommunications Union (ITU) adds a leap second to atomic time every few years.
Since only the algorithm would change from year to year, those who rely on precision atomic time would not be affected by adding leap seconds.