Three Overlapping Walking Phases

In the picture

1. 1Leftmost faint silhouette: the earliest moment of the stride
2. 2Middle silhouette: the next moment, overlapping the first
3. 3Rightmost solid silhouette: the final moment of the stride

Examples

• A long-exposure photograph of a dancer leaves a trail of arms and legs in one picture.
• A flipbook shows a walk page by page, but a single overlapping drawing can hold several pages at once.

Quiz: Three Overlapping Walking Phases (Age 16)

1. 1

   What can a still image do by drawing several moments of a movement together?

   • Show movement only if the image is animated.
   • Show only one frozen moment with no sense of time.
   • Show movement unfolding over time within one image.
2. 2

   How do overlap and changes in opacity help a still image of a movement?

   • They help the eye read the phases as a sequence in motion.
   • They hide the earlier phases so only the last one matters.
   • They make all phases look identical and simultaneous.
3. 3

   What does drawing successive, slightly shifted phases of a moving body achieve?

   • It makes the movement seem to travel across the still image.
   • It shows that the movement happened only once.
   • It makes the body appear to be standing still.

The answers, each with its explanation, are in the app. This lesson has left the free week, so its quiz is part of the subscription.