How do we establish a standard time interval in physics to establish the exact b
ID: 1875848 • Letter: H
Question
How do we establish a standard time interval in physics to establish the exact basis of the second?
From the rotation rate of the Earth on its axis
From the orbital period of Earth around the Sun
From the mechanical spin of a standard metal cylinder
By the natural frequencies in an atom of the element cesium.
a.From the rotation rate of the Earth on its axis
b.From the orbital period of Earth around the Sun
c.From the mechanical spin of a standard metal cylinder
d.By the natural frequencies in an atom of the element cesium.
Explanation / Answer
The atomic clocks are world's most accurate clocks. Therefore a standard time interval in physics to established using the natural frequencies in an atom of the element cesium..
Correct Answer D
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