Optical Frequency Combs | NIST
What do optical frequency combs do?| NIST
Next-generation atomic clocks promise to chop the second into much smaller parts, allowing unprecedented accuracy and precision| NIST
JILA researchers measured time dilation, or how an atomic clock's ticking rate varied by elevation, within this tiny cloud of strontium atoms. | NIST
JILA researchers have used a state-of-the-art atomic clock to narrow the search for elusive dark matter, an example of how continual improvements in clocks h| NIST
BOULDER, COLO.—An experimental atomic clock based on a single mercury atom is now at least five times more precise than the national standard clock based on| NIST
Standard Frequency | BIPM
This new result contributes to the international effort to define the second with a much greater level of accuracy than before, enabling new scientific and technological advances| NIST
