Category:NBS-3 atomic clock
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Atomic Caesium Clock NBS-3 from 1963. http://tf.nist.gov/cesium/atomichistory.htm
Media in category "NBS-3 atomic clock"
The following 3 files are in this category, out of 3 total.
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Atomic Clock042.jpg 4,822 × 6,297; 19.56 MB
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Atomic Clock050.jpg 4,912 × 6,358; 24.66 MB
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Nbs-3.jpg 425 × 289; 34 KB
