Second

The main definition for the second is the SI unit of time. However, it is also defined as 1/360 of a degree.

The SI unit of Time

The SI unit of time is the second and is the duration of 9192631770 periods of the radiation corresponding to the transition between two hyperfine levels of the ground state of a caesium 133 atom.

Angle

1 second = 1/360 degree (°)

See also: femtosecond, Hour, Millisecond, Minute, Plane Angle, Time.