The chip-scale atomic clocks were developed to support precise timekeeping for small devices that can’t communicate. One example is undersea sensor networks, wh

The chip-scale atomic clocks were developed to support precise timekeeping for small devices that can’t communicate. One example is undersea sensor networks, where you want to leave the sensors in place for a year or more, and when you return you can correlate the readings from the sensors because you know they were all ticking at the same rate the whole time.