How do comics turn still pictures and empty gaps into time?

A comics page is a pile of frozen pictures. Each box, called a panel, shows a single drawing of one still moment. Yet when you read a fight scene you feel the punch swing and land. The motion is not on the page. It happens in your head, in the little gap between one panel and the next.

That gap has a name, the gutter, the short space that often separates one panel from another. The convention is simple: panels in sequence stand for action over time, and the gutter stands for the time between them. Panel one shows a fist pulled back. Panel two shows a face reeling. You supply the blow in between. The cartoonist picks the prime moments, and you join them into events using what you already know about how people move and how stories go.

The American cartoonist Scott McCloud gave that mental leap a name in his 1993 book Understanding Comics, which is itself drawn as a comic. He called it closure: the reader's role in closing the narrative gaps between panels. The French theorist Pierre Fresnault-Deruelle had analysed those jumps between images before him, but closure is the name that stuck.

Because the reader does the joining, the artist can steer time without a clock. The size, shape and arrangement of the panels all affect the timing and pacing of the story. Panel shapes can signal time, intensity or mood, and a drawing can even break out of its border for effect. So comics are less a flipbook than a conversation: the artist chooses what to show, and you quietly fill in the rest.