Quantum clocks, in particular, have pushed the boundaries by using the strange rules of quantum mechanics to achieve mind-boggling accuracy. However, there has always been a catch: the more precise ...

Abstract: The frequency stability of an atomic fountain clock was significantly improved by employing ... was applied as a local oscillator and a frequency reference. High atom number was achieved by ...

There are many types of dads, and even more types of gifts you can buy them this Father’s Day. While the golf dads and stogie ...