The clock face was intended to scare the world. Its hands ... After the Russians exploded their first H-bomb, Bulletin time read two minutes before the hour of doom. Today the clock is still ...

The timekeepers of the world, thankfully, are always making sure that everything is right on time, as it should be. National Institute of Standards and Technology. Bringing an Atomic Clock Back to ...

The machine ... atomic clocks are the best way of keeping time right now.” But cesium clocks are no longer the most accurate clocks available. In the past five years the world’s most advanced ...