Consider an experiment that selects a cell phone camera and records the recycle time of a flash (the time taken to ready the camera for another flash). The possible values for this time depend on the resolution of the timer and on the minimum and maximum recycle times. However, because the time is positive, it is convenient to define the sample space as simply the positive real line

\[ S=R^{+}=\{x \mid x>0\} \]