t would take 15 billion years for the clock that occupies Jun Ye's basement lab at the University of Colorado to lose a second -- about how long the universe has existed. For this invention, the ...

It would take 15 billion years for the clock that occupies Jun Ye's basement lab at the University of Colorado to lose a second -- about how long the universe has existed. For this invention, the ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. This unit is all that remains of a ...

By replacing single atoms with an entangled pair of ions, physicists in Germany have demonstrated unprecedented stability in ...

IF TIME waits for no man, then neither does human ingenuity in measuring its passing. Throughout history, more stable and accurate clocks have led to advances in communications and navigation. Now a ...

This past August, scientists at the National Institute of Standards and Technology (NIST) unveiled a development that could deliver a thousand-fold performance improvement over the quartz crystal ...

The PCF2129T is a CMOS Real Time Clock (RTC) and calendar with an integrated Temperature Compensated Crystal (Xtal) Oscillator (TCXO) and a 32.768 kHz quartz crystal optimized for very high accuracy ...