Basic unit for measuring time

Answer 1

The second is the lowest basic measurement of time.

Answer 2

The basic unit for measuring time is the second. It is defined as the duration of 9,192,631,770 periods of the radiation corresponding to the transition between two hyperfine levels of the ground state of the cesium-133 atom.

Answer 3

The second, defined as the time taken for a specific number of vibrations in a particular isotope of caesium.

Answer 4

A Day is the most rudementary base for time. Used since man first walked the earth. It is marked by the passing of the sun from sunrise to sunrise the next day.

Answer 5

It's the "second".

Answer 6

1 second