
Cesium-133
Cesium-133 is an atomic element that is widely used in atomic clocks, which are the most accurate timekeeping devices in the world. Atomic clocks use the natural vibrations of cesium-133 atoms to measure time. The vibrations of cesium-133 atoms are extremely regular and predictable, making them ideal for timekeeping. The accuracy of atomic clocks is so high that they can measure time to within a billionth of a second. Cesium-133 is also used in scientific research, particularly in the field of atomic physics.
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