There's a new record holder for the most accurate clock in the world. Researchers at the National Institute of Standards and ...

Optical clocks are typically evaluated on two levels — accuracy (how close a clock comes to measuring the ideal “true” time, ...

"One current method to narrow laser linewidth uses Brillouin lasers, where sound waves interact with light; but the effect is ...

For nearly a century, scientists around the world have been searching for dark matter—an invisible substance believed to make ...

Key TakeawaysScientists have used laser-excited thorium-229 to probe for ultralight dark matter, even without a fully built ...

Scientists believe that if a nuclear clock is developed – one that uses the atomic nucleus to measure time with extreme precision – even the tiniest irregularities in its ticking could reveal dark ...

The mind-bending concept of time dilation results from a seemingly harmless assumption—that the speed of light is the same ...

Macquarie University researchers have demonstrated a technique to dramatically narrow the linewidth of a laser beam by a factor of over ten thousand – a discovery that could revolutionise quantum ...

Yet greater awareness of sleep deprivation’s consequences hasn’t translated into a better-rested populace. Data from the CDC ...