Nagasaki cathedral has blessed the final piece to complete its restoration nearly 80 years after being destroyed by the ...

Scientists break down the reasons why days are getting shorter—and the mystery they're still trying to solve about Earth's ...

Time will stop on Tuesday, but only for a second. The world's timekeepers will be adding a sliver of time—a leap second—to our clocks. Just as leap years keep our calendars lined up with Earth ...

However, aluminum is tricky. The element is difficult to measure with lasers, as well as cool to absolute zero. But when ...

The Second Atomic Bomb The crew of Bockscar dropped the Fat Man bomb over Nagasaki just three days after the first nuclear weapon hit Hiroshima. Tony Reichhardt . August 9, 2013.

Even if the clocks pass this later test, usurping the caesium clock to create a more precise definition of the second will not be easy. International atomic time — on which coordinated universal ...

In 1958, amendment of the McMahon Act updated the special partnership with Britain in the nuclear weapons sphere. Nuclear ...

Since 1972, utc has been adjusted to meet this goal by adding a leap second whenever the discrepancy between the two standards approaches one second. Atomic clocks have enabled the development of ...

Iran has started building a second atomic power plant in an oil-rich region near the border with Iraq, Iran's Ambassador to Russia was quoted as saying Friday by Itar-Tass news agency.

The length of a second hasn't been updated in 70 years, but ultraprecise atomic optical clocks are on track to change that. Skip to main content Open menu Close menu ...