
World’s Most Accurate Clock Hits Market in Japan
Japan’s Shimadzu Corporation has unveiled the “Aether Clock OC 020,” a strontium optical lattice clock priced at $3.3 million. This cutting-edge timepiece boasts an unprecedented accuracy, deviating by only one second over 10 billion years, making it 100 times more precise than the cesium atomic clocks currently used to define the standard second.
Measuring approximately one meter in height with a volume of 250 liters, the Aether Clock OC 020 is notably compact compared to traditional optical lattice clocks. Its design facilitates deployment beyond laboratory settings, enabling practical applications in scientific fieldwork. Shimadzu aims to sell ten units over the next three years, targeting research fields such as tectonic activity monitoring and tests of general relativity.
Optical lattice clocks like the Aether Clock OC 020 have been instrumental in experimental validations of fundamental physics theories. For instance, installations in structures such as Tokyo’s Skytree have been utilized to test Einstein’s theory of general relativity, which posits that time flows more slowly in regions with stronger gravitational fields.