Nobel laureate Arthur Schawlow’s advice to “never measure anything but frequency” is a central principle of modern precision metrology and timekeeping. Today’s spectroscopy is advanced enough to teach ...

The goal of the Defense Advanced Research Projects Agency’s (DARPA’s) Chip-Scale Atomic Clock (CSAC) program is to provide warfighters with enhanced radio communications and jam-resistant navigation ...

It was 2:30 in the morning when astronautical engineer Todd Ely watched as a little atomic clock—the size of a four-slice toaster—was launched into space on a satellite attached to one of the most ...

There are significantly different architectures for what are known as “atomic” clocks. Optically driven atomic clocks offer a new set of performance attributes. The optical atomic clocks use paired ...

The most accurate clock in space launches within days and will begin building a highly synchronised network out of the best clocks on Earth. But the project, decades in preparation, will only operate ...

An Arizona-based company has launched its next generation of low-noise Chip-Scale Atomic Clock (CSAC). Microchip's model SA65-LN is designed to operate in a wider temperature range, enabling low-phase ...