Which area is brighter?
A
B
Both are the same
It depends on the order of seeing
This is the well known checker shadow illusion, first published in 1995 by Edward H. Adelson, Professor of Vision Science at MIT. The area A appears darker because of its light surrounding. At the same time, area B, surrounded with dark areas, appear lighter.
reach: rather globalillusionsoptical illusionsopticstechnology
Answers by country
A
B
Both are the same
It depends on the order of seeing
answers

30

24

807

88

60

20082

32

240

30

45

79

396

236

27

232

24

351

44

25

19