دیوید در برابر جالوت ها: سنگاپور دقیق ترین ساعت را می سازد، ایالات متحده و چین را در گرد و غبار رها می کند

David vs Goliaths: Singapore builds most accurate clock ever, leaves US and China in dust

A small Singaporean research team has beaten scientists in China and the United States to build the world’s most accurate atomic clock. The clock, built with a single ion of a rare earth metal element known as lutetium, is so precise that it would lose one second every 260 billion years – nearly 20 times the age of our universe. It is about four times as accurate as the previous record holder, a calcium-ion clock…