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The Lilac Chaser

Twelve lilac dots and one gap going round — keep your eyes still and see what the gap becomes.

Celle-ci n’est pas encore traduite : ses textes sont en anglais.

Couleur

Comment jouer

Watch the gap, not the dots

Look only at the cross in the middle. After a few seconds, pay attention to what the gap going round becomes.

  • Moins d’une minute · une question · puis l’explication
  • Celle-ci bouge, ou semble bouger.
Comment ça marche — à lire plutôt après avoir essayé

Two effects at once

Where a lilac dot disappears, the tired cells leave a green afterimage in its place, so the gap looks like a green dot running round.

Blurred objects away from where you are looking also fade from view when they hold still, so after a while the lilac dots can vanish entirely.

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