Which of the following is used in atomic clocks laser?
The most accurate atomic clocks available today use the cesium atom and the normal magnetic fields and detectors. In addition, the cesium atoms are stopped from zipping back and forth by laser beams, reducing small changes in frequency due to the Doppler effect.
What is used as timekeeper in atomic clocks?
Caesium (Cs-133) is used as timekeeper in atomic clocks. Cesium is used because of its high resonant frequency of 9,192,631,770 Hz.
What is the most accurate atomic clock?
Today, the most precise clocks are based on a natural atomic resonance of the cesium atom—the atomic equivalent of a pendulum. For example, NIST-F1, one of the world’s most accurate time standards based on microwave atomic clocks, neither gains nor loses a second in 20 million years.
How accurate is atomic clock?
How Does an Atomic Clock Work? With an error of only 1 second in up to 100 million years, atomic clocks are among the most accurate timekeeping devices in history.