🎬 nytimes.com nytimes.com
9,192,631,770 Hz
How do we measure time? Technically, by the oscillations of a cesium atom. This film tells a human story behind an element from the periodic table: cesium.
↗https://www.nytimes.com/video/opinion/100000010494944/9192631770-hz.html
Watches and Clocks
Time
Weights and Measures
Laboratories and Scientific Equipment
National Institute of Standards and Technology
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