资讯

Intercontinental optical clock comparison sets stage to redefine the second
In the final analysis, by showing that 10 heterogenous clocks across three continents could agree with each other to within a ...
Column: Britain-France nuclear accord is truly historic
In 1958, the amendment of the McMahon Act updated the special partnership with Britain in the nuclear weapons sphere. Nuclear ...
World's most precise clock achieves 19-decimal accuracy with aluminum ion technology
There's a new record holder for the most accurate clock in the world. Researchers at the National Institute of Standards and ...
Interesting Engineering on MSN16 小时
World’s most accurate atomic clock uses 2-mile laser beam to track time precisely
The laser beam traveled 3.6 kilometers (over 2 miles) via fiber optic links to NIST, where a frequency comb (acting as a “ruler for light”) allowed the aluminum ion clock’s laser to adopt its superior ...
Trump Energy secretary: AI race is next Manhattan Project
Energy Secretary Chris Wright on Tuesday compared the race to dominate artificial intelligence (AI) to an American atomic bomb program during World War II. “The AI race is the second Manhattan ...
Physics World12 天
New definition of second ticks closer after international optical-clock comparison
“The optical clock community is strongly motivated to obtain the best possible set of measurements before the SI second is ...
History Profiles on MSN6 天
The Father of the Atomic Bomb - Oppenheimer
World War II or the Second World War, was a global conflict that lasted from 1939 to 1945. The vast majority of the world's ...
Earth’s rotation is changing its speed! Days to become shorter by…., these days in July ...
A leap second is a one-second modification that is sometimes used with atomic clocks, whenever there is a change in Earth's ...