“Quantum clocks running at the smallest scales were expected to lower the energy cost of timekeeping, but our new experiment ...

That big grandfather clock in the library might be an impressive piece of mechanical ingenuity, and an even better example of fine cabinetry, but we’d expect that the accuracy of a pendulum timepiece ...

What if the most difficult part of keeping time wasn’t running the clock, but rather simply reading it? That counterintuitive ...