Archive: https://archive.today/wInu7 From the post: >>Scientists have created a clock so precise it could redefine the second. The strontium optical lattice clock is one of the most accurate timepieces ever made, capable of measuring seconds to 19 decimal places. To put that into context, if the clock ran for 30 billion years – more than twice the current age of the universe – it would only be off by around a second. This degree of precison has been possible thanks to significant advances in technology, and represents a major breakthrough in optical clock technology.