It is claimed that two atomic clocks if allowed to run for 100 years, free from any disturbance, may differ by only about 0.02 second. In measuring a time interval of second what is the accuracy?

It is claimed that two atomic clocks if allowed to run for 100 years,

1.	It is claimed that two atomic clocks if allowed to run for 100 years, free from any disturbance, may differ by only about 0.02 second. In measuring a time interval of second what is the accuracy?
Answer» SOLUTION :ACCURACY of 1 part in `10^(11) "to" 10^(12)`