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Johann Karl Friedrich Zöllner (1834–1882) was a German astrophysicist who studied optical illusions. He invented the Zollner illusion where lines that are parrell appear diagonal. Zöllner crater on the moon is named in his honor.
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Johann Karl Friedrich Zöllner (1834–1882) was a German astrophysicist who studied optical illusions. He invented the Zollner illusion where lines that are parrell appear diagonal. Zöllner crater on the moon is named in his honor.