Seconds are the vital units of measurement in timekeeping. Surprisingly, there is still debate over the definition of the second. But recent advances in the world’s most accurate forms of ...
BOULDER, Colo. — It was close to midnight on a Wednesday in May when physics graduate student Chuankun Zhang fired a specialized laser at a tiny radioactive crystal nestled in a vacuum chamber ...
The South African Revenue Service (Sars) has a problem with timekeeping. This is apparent from the 2023/24 Annual Report of the Office of the Tax Ombud, released on Wednesday. The non-adherence to ...