Question

What is the meaning of this:
"The standard for unit of time, the second (s), is the exact duration of 9,192,631,770 cycles of the radiation associated with the transition between the two hyperfine levels of the ground state of cesium-133 atom."

Answer 1

Answer:

brainliest

Explanation:

The standard for unit of time, the second (s), is the exact duration of 9,192,631,770 cycles of the radiation associated with the transition between the two hyperfine levels of the ground state of cesium-133 atom.

Some of the more common clocks and watches can be found in the table below:

Type of clock/watch Use and accuracy

Atomic clock Used to measure very shoty time intervals of about

10

−

10

seconds

Digital stopwatch Used to measure short time intervals of minutes and seconds to an accuracy of

±

0.01

s

Analogue stopwatch Used to measure short time intervals of minutes and seconds to an accuracy of

±

0.1

s

Ticker-tape timer Used to measure short time intervals of 0.02 s

Watch Used to measure longer time intervals of hours, minutes and seconds

Pendulum clock Used to measure longer time intervals of hours, minutes and seconds

Radioactive decay clock Used to measure LONG time intervals of years to thousands of years