How do rests represent different lengths of silence?

In musical notation, rests are symbols used to indicate precise intervals of silence. They function as a system that measures silence in the same way that notes measure sound, with each symbol representing a specific duration relative to the notes around it.12

Just as note symbols indicate duration through their specific shapes, rests correspond to the time values of their equivalent note counterparts. For example, a half rest represents a duration of silence equal to a half note, while a thirty-second rest corresponds to the value of a thirty-second note. Other symbols, such as the breve rest, represent longer durations, such as two whole notes.2345

Because these symbols define duration relative to other notes and rests, they provide a rhythmic framework that allows musicians to understand exactly when to pause. By using this standardized system, composers can ensure that silence is as rhythmically structured and intentional as the sounds themselves.21