Ring Around
Two dark discs, one in a tight ring and one in a wide one.
لم تُترجم هذه التجربة بعد، لذا نصوصها بالإنجليزية.
طريقة اللعب
انظر أولًا، ثم أجب
Two dark discs, one in a tight ring and one in a wide one.
- أقل من دقيقة · سؤال واحد · ثم الشرح
كيف يعمل — يُفضَّل قراءته بعد التجربة
Pulled out, pushed in
The discs are the same size. A ring close to a disc tends to be merged with it, so the disc borrows some of the ring’s size and looks larger; a ring far away is compared with it instead, and next to something big the disc looks smaller.
The Belgian philosopher and mathematician Joseph Delboeuf described it in 1865. It is a close relative of the Ebbinghaus circles, and it has been suggested that the same thing makes a portion of food look smaller on a large plate.