Most atomic clocks sold in the U.S. have every American time zone setting, but it's good to double check before buying one. You'll also want to consider what other features you need in an alarm ...

Nuclear clocks might soon rival the best atomic ones as supremely accurate timekeepers — a testament to the value of both competition and cooperation in research. Nuclear clocks might soon rival ...

Correction 10 May 2024 Best ever clocks: breakthrough paves way for ultra-precise ‘nuclear’ timekeepers A clock based on energy shifts in atomic nuclei could transform fundamental-physics ...

Which atomic clocks are best? The first time zone, Greenwich Mean Time, was established in the late 1600s to assist sailors before the invention of the train and railway in the mid-1800s expanded ...

Which atomic clocks are best? The first time zone, Greenwich Mean Time, was established in the late 1600s to assist sailors before the invention of the train and railway in the mid-1800s expanded ...

Which atomic clocks are best? The first time zone, Greenwich Mean Time, was established in the late 1600s to assist sailors before the invention of the train and railway in the mid-1800s expanded ...

Not all atomic clocks can be used anywhere in the world as some only have compatibility with certain time zones. Using one of these outside a supported time zone could mean an inaccurate time ...

Which atomic clocks are best? The first time zone, Greenwich Mean Time, was established in the late 1600s to assist sailors before the invention of the train and railway in the mid-1800s expanded ...

Time triangle: illustration of how the ytterbium (Yb), strontium (Sr) and aluminium-magnesium (Al+/Mg+) atomic clocks were connected. (Courtesy: N Hanacek/NIST) The time kept by three of the world’s ...

Cesium atomic clocks are really, really good— the best of them have an uncertainty of around a part in 10 16, which is to say when it measures one second, that’s 1.0000000000000000+/-0. ...

Ekkehard Peik, one of the field’s pioneers, says such a clock could be a factor of 1,000 times better than today’s standard atomic clocks.

The SmartSet, by Emerson, looks an awful lot like the alarm clocks you might have had a few decades ago. It uses a red LED interface which looks as much at home today as it did in the '90s.