The race to build the world's smallest atomic clock, again

Yuan-Yu Jau is on a quest to build the world's smallest atomic clock, a device that measures time with extreme accuracy. If successful, he and his team at Sandia will have made one smaller than a sugar cube.

The magic wavelength of cadmium

Researchers experimentally determined a property of cadmium called the magic wavelength which is considered essential for the development of the most accurate clocks ever envisaged. The researchers hope this may permit simple ...

What will you do with your extra second?

This New Year's countdown will be one second longer as the National Physical Laboratory (NPL) introduces the 27th leap second into UTC(NPL), the UK's timescale. The additional second will keep the timescale based on atomic ...

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