An optical atomic clock built by the UK’s National Physical Laboratory. Its time-keeping mechanism is a trapped and cooled ion of strontium that “gives off a regular pulse of optical radiation exactly 444,779,044,095,485 times per second" when another laser causes it to oscillate between two energy states. One NPL scientist calls it "the Buddha".

An optical atomic clock built by the UK’s National Physical Laboratory. Its time-keeping mechanism is a trapped and cooled ion of strontium that “gives off a regular pulse of optical radiation exactly 444,779,044,095,485 times per second" when another laser causes it to oscillate between two energy states. One NPL scientist calls it "the Buddha".

(Source: newscientist.com)