Quantum timekeeping has reached a new threshold, with trapped-ion clocks now accurate to the 19th decimal place and a ...

Microchip has combined a chip-scale caesium atomic clock for good accuracy with a ovened crystal oscillator for good phase noise, in a through-hole package measuring 0.4 x 50.4 x 12.7mm (2 x 2 x ...

Keeping perfect time is far trickier than it sounds. The world’s best clocks that are used for GPS navigation, satellite communication, and testing fundamental physics depend on carefully controlled ...

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 ...

An electronic system requires a reliable, precision timing reference: the system clock. We examine and compare two forms of system clocks, the Crystal Oscillator and the Phase Locked Loop Synthesizer ...