Keeping time is easy, keeping precise time is hard, but a new type of clock based on atomic nuclei has pushed time-keeping ...

Today, most people can check the time with a glance at a phone, watch, or computer screen. Precise timekeeping has become so routine that it's easy to forget how difficult it once was to measure the ...

Unveiling the jewelers' clock -- Time's tongue and hands: the first public clocks in the United States -- Clockwatching: the uneasy authority of clocks and watches in antebellum America -- Republican ...

Time might be even stranger than Einstein imagined. Physicists are now exploring the possibility that a single clock could exist in a quantum superposition, ticking both faster and slower at the same ...

For more than three decades, a brick and steel clock tower has presided over Lyndale Avenue and 98th Street in Bloomington.