US scientists debut atomic clock that stays true for 100 million years straight | NIST-F4 is America’s bid for precision timekeeping dominance, accurate to 2.2 parts in 10 quadrillion and critical for finance, GPS, and data centers.
What Is an Atomic Clock? (2019)
China creates atomic clock that will run error-free for 7.2 billion years | Using strontium and ultra-stable lasers, the researchers have built an optical clock, the second of its kind in the world.
