Singaporean Atomic Clock Achieves Unprecedented Accuracy

Physicists in Singapore have developed an atomic clock capable of measuring time to the 19th decimal place. This new clock achieves a fourfold leap in accuracy compared to the previous best machines developed in the U.S. and China, establishing a new standard in precision.

The research, published in Nature, indicates that a clock with this level of accuracy could operate for hundreds of billions of years without losing or gaining a single second, a duration far exceeding the current age of the universe.

Atomic clocks are fundamental to modern infrastructure, underpinning technologies such as GPS navigation, cellular networks, and financial markets. The current global standard for timekeeping relies on cesium atomic clocks, established in the 1960s.

The new clock utilizes lutetium atoms, whose internal structure acts as a form of noise-canceling armor. This makes the atom less susceptible to environmental disturbances like temperature fluctuations and magnetic fields. The high mass of the lutetium atom also contributes to its stability, reducing errors caused by motion.