A "Time Scale" is a system used to measure and categorize time intervals. It helps us understand the duration of events, from the smallest units like seconds and minutes to larger ones like years and centuries. Time scales are essential in various fields, including science, history, and everyday life, as they provide a framework for organizing and comparing different time periods. Different time scales can be used for specific purposes. For example, the Geological Time Scale divides Earth's history into eons, eras, and periods, helping scientists study the evolution of life. In contrast, the Atomic Time Scale is used in physics to measure time with extreme precision, based on the vibrations of atoms.