“What then is time? If no one asks me, I know what it is.
If I wish to explain it to him who asks, I do not know.”
Saint Augustine (“Confessions” Book XI)
One NIST electrical engineer has a unique perspective on the passage of time, being one of the keepers of time for the country. Read his take: https://t.co/99CqMgoSM8 pic.twitter.com/RrlbcTPfXx
— National Institute of Standards and Technology (@NIST) December 31, 2024
How Do You Measure the Percentage of Alcohol in Beer, Wine and Other Beverages?https://t.co/WitMHCUKGdhttps://t.co/VS3p32cdGd@NIST pic.twitter.com/FPKBBSari9
— Standards Michigan (@StandardsMich) November 28, 2022
“The greatest danger in modern technology isn’t that machines will begin to think like people,
ut that people will begin to think like machines.”
— Michael Gazzaniga
NIST Cloud Computing Standards Roadmap
The “next big thing” reveals itself in hindsight. Some areas of interest and potential advancements include:
The National Institute of Standards and Technology is responsible for maintaining and disseminating official time in the United States. While NIST does not have a direct role in implementing clock changes for daylight saving time, it does play an important role in ensuring that timekeeping systems across the country are accurate and consistent.
Prior to the implementation of daylight saving time, NIST issues public announcements reminding individuals and organizations to adjust their clocks accordingly. NIST also provides resources to help people synchronize their clocks, such as the time.gov website and the NIST radio station WWV.
In addition, NIST is responsible for developing and maintaining the atomic clocks that are used to define Coordinated Universal Time (UTC), the international standard for timekeeping. UTC is used as the basis for all civil time in the United States, and it is the reference time used by many systems, including the Global Positioning System (GPS) and the internet.
Overall, while NIST does not have a direct role in implementing clock changes for daylight saving time, it plays an important role in ensuring that timekeeping systems across the country are accurate and consistent, which is essential for the smooth implementation of any changes to the system.
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Time Realization and Distribution
Compact Chips Advance Precision Timing for Communications, Navigation and Other Applications
Shrinking Technology, Expanding Horizons: Complete Article
National Institute of Standards and Technology, Boulder, CO, USA
Igor Kudelin, et. al
Department of Physics, University of Colorado Boulder, Boulder, CO, USA
Abstract: Numerous modern technologies are reliant on the low-phase noise and exquisite timing stability of microwave signals. Substantial progress has been made in the field of microwave photonics, whereby low-noise microwave signals are generated by the down-conversion of ultrastable optical references using a frequency comb1,2,3. Such systems, however, are constructed with bulk or fibre optics and are difficult to further reduce in size and power consumption. In this work we address this challenge by leveraging advances in integrated photonics to demonstrate low-noise microwave generation via two-point optical frequency division4,5. Narrow-linewidth self-injection-locked integrated lasers6,7 are stabilized to a miniature Fabry–Pérot cavity8, and the frequency gap between the lasers is divided with an efficient dark soliton frequency comb9. The stabilized output of the microcomb is photodetected to produce a microwave signal at 20 GHz with phase noise of −96 dBc Hz−1 at 100 Hz offset frequency that decreases to −135 dBc Hz−1 at 10 kHz offset—values that are unprecedented for an integrated photonic system. All photonic components can be heterogeneously integrated on a single chip, providing a significant advance for the application of photonics to high-precision navigation, communication and timing systems.
Standard stitch work – standards for men’s clothing sizes trace back to the Civil War, but no one even attempted to fix the sizes for women until almost a century later, when they called on NIST. #NYFW pic.twitter.com/dFQVGknU3w
— National Institute of Standards and Technology (@NIST) February 13, 2021
New update alert! The 2022 update to the Trademark Assignment Dataset is now available online. Find 1.29 million trademark assignments, involving 2.28 million unique trademark properties issued by the USPTO between March 1952 and January 2023: https://t.co/njrDAbSpwB pic.twitter.com/GkAXrHoQ9T
— USPTO (@uspto) July 13, 2023
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