Atomic fountain clocks are at present the most accurate clocks in the world: Caesium fountain clocks furnish the second accurate to 15 places after the decimal point. Until they reach this accuracy, ...

Dr. Frank Narducci, professor and chair of the NPS Department of Physics, and doctoral student U.S. Navy Cmdr. Jens Berdahl are making progress on the installation of an atomic fountain in NPS’ ...

The world's best clock, NIST-F1, has been improved over the past few years and now measures time and frequency more than twice as accurately as it did in 1999 when first used as a national standard, ...

BOULDER • Every second in a small laboratory room in Boulder, a green light flashes. Within the webs of yellow wire and shelves of computer systems, this green light represents the passage of time.

Atomic clocks are established as the most precise timekeepers created. Atomic clocks work by deploying lasers to measure the vibrations of atoms (electromagnetic signals). By atoms oscillating at a ...

Just days before the new year began, the United States followed through on a resolution to keep better track of time in the years ahead. On Dec. 29, the National Institute of Standards and Technology ...

Researchers have created an atomic clock that can be taken into war zones, and it could change the future of military combat A timepiece that could profoundly change the nature of future warfare has ...

DENVER (KDVR) — It is said that time is relative and passes differently depending on an observer’s relative motion and gravitational potential. Although some would argue time is a construct, it does ...

In 1797, English scientist Henry Cavendish measured the strength of gravity with a contraption made of lead spheres, wooden rods and wire. In the 21st century, scientists are doing something very ...

Knowing what time it is down to the very last sliver of a second is easy — but only if you happen to have an atomic clock in your pocket. Unfortunately, most such devices wouldn't fit. In fact, there ...