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Caesium standard

technology Maturity 11-13

A special clock keeps time.

NIST-F2 cesium fountain atomic clock.jpg
NIST-F2 cesium fountain atomic clock.jpg
It uses tiny parts to stay right. This helps us know the exact second. It is a very good clock. Can you imagine a clock that never misses a beat?

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File:NIST-F2 cesium fountain atomic clock.jpg
NIST-F2 cesium fountain atomic clock.jpg
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📚 Content adapted from Wikipedia | Readability: FK 16.2 | Vital Level 5