There’s an empty frame on the wall. Fill it with a smaller copy of this entire picture.
That copy has a frame, too. Put another copy there. And another. The rule can keep going forever, even when the copies become too small to see.
This is the Droste effect: a picture that contains a smaller version of itself.
Just the roomEight rooms deep
02 A DIFFERENT KIND OF DISTANCE
Give every size the same space.
Each copy takes up less room than the last. To see the pattern, we need a different map.
Measure distance from the centre on a logarithmic scale: shrinking by the same factor now moves the same distance. Walk around the centre, and you move in the other direction.
As you scroll, the nested picture opens into a repeating strip. Zooming in becomes sliding along it.
100%42%18%7%
Equal steps in scale. Equal steps on the strip.
This copyThe next copy
03 THE SMALL MOVE THAT CHANGES EVERYTHING
Let a turn change the scale.
In the original picture, going once around the centre brings you straight back to where you started.
Now tilt the strip. Arrange it so that one full turn also takes you to the next, smaller copy. Going around and going inward become part of the same journey.
The angle comes from the size of the inner frame. For this picture, it’s about 8°.
No tiltOne copy per turn
04 BACK INTO THE PICTURE
Roll it back up. Keep the tilt.
Return from the flat map to the picture. Positions around the strip become angles again; positions along it become distances from the centre.
But we’ve changed how those directions fit together. The picture now gets smaller as it turns.
That small tilt opens up into a spiral.
Flat stripSpiral
05 AN END THAT IS A BEGINNING
You have been here before.
Follow the picture inward. The room appears again, smaller and turned. Keep going, and it appears again.
This is a tententoon: the same picture, with the same rule, spiralling through another scale.
There is no last picture. Just another way in.
HereHere, again
NOW MAKE THE IDEA YOURS
What’s inside your picture?
Choose an image. Mark the frame where it should repeat. Watch it become something you couldn’t have drawn.