NIST Physicists Develop World’s Smallest Atomic Clock
NIST researchers have created the world’s smallest atomic clock, measuring about the size of a grain of rice. The clock, which is 100 times smaller than previous atomic clocks, could revolutionize portable timekeeping technology.
Key Points:
– The “physics package” is about 1.5mm x 4mm and consumes less than 0.075 watts
– Stable to one part in 10 billion, gaining or losing only one second every 300 years
– Could be mass-produced using existing MEMS fabrication techniques
– Potential applications include secure wireless communications, improved GPS navigation, and better timekeeping in consumer electronics
The clock works by measuring the natural vibrations of cesium atoms using a small infrared laser. While less accurate than larger atomic clocks, its small size, low power consumption, and potential for low-cost mass production make it ideal for a wide range of applications.
Source: https://www.nist.gov/news-events/news/2004/08/nist-unveils-chip-scale-atomic-clock
Keywords: Atomic, Clocks, Timekeeping, Precision, Metrology
