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Which clock does the SI use to define the second? | StemPy Lab
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Which clock does the SI use to define the second?
Physics
Easy
High School (11–12)
Mechanics › Units and Measurement
Created by
StemPy Lab
Which clock does the SI use to define the second?
The turning of the Earth
A quartz watch
A pendulum clock
A caesium atomic clock
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Created by StemPy LabCreated by StemPy Lab