A new atomic clock is one of the world’s best timekeepers, researchers say — and after years of development, the “fountain”-style clock is now in use helping keep official U.S. time. Known as NIST-F4, ...

In this case, the new clock uses an ion of aluminum linked to an ion of magnesium, forming what is known as a quantum logic clock. In this, the aluminum ion has a high-frequency, stable "tick." ...

On a campus in Boulder, Colorado, time just became a little more exact. Inside the National Institute of Standards and Technology, or NIST, a new atomic clock named NIST-F4 has begun to tick — not ...

DENNISON – Installation of the Howard Replica II clock in Dennison took about 3 hours early Tuesday morning. Built by the Verdin Co. of Cincinnati, it looks similar to the clock in Dover, located on ...

On Wednesday, Nintendo announced Sound Clock Alarmo, a $99 bedside smart clock that uses motion sensors to detect when users move during sleep to keep track of sleep patterns. The clock, which is only ...

Swarthmore and East Hinckley avenues in Ridley Park was a lively spot Thursday evening as the community celebrated the installation of the new town clock. “Before this clock, people that visited our ...