New uncertainty: A relationship between time and dissipation rate has been established in the laboratory. (Courtesy: iStock Greyfebruary) A “speed limit” on changes in non-equilibrium systems that was ...

Hickory dickory dock, this nucleus could make a great clock. A special variety of the element thorium hosts an atomic nucleus that could be used to keep time, scientists say. In a first, researchers ...

At this point, atomic clocks are old news. They’ve been quietly keeping our world on schedule for decades now, and have been through several iterations with each generation gaining more accuracy. They ...