A Japanese analysis equipment maker has started selling a type of clock said to be the world's most precise. The optical lattice clock was developed by a team led by University of Tokyo Professor ...

Japanese precision equipment maker Shimadzu Corp. said Wednesday that it has begun selling an optical lattice clock with a deviation of less than one second over 10 billion years, making it the most ...

The strontium optical lattice clock is the first of its kind to be commercially available and will cost about 500 million yen ($3.3 million).