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.
globalquiz.org
0
Correct this question
8
Very interesting!
reach: rather globalillusionsoptical illusionsopticstechnology

Answers by country

A
B
Both are the same
It depends on the order of seeing
answers
flagSingapore
10%
3%
76%
10%
30
flagthe Netherlands
4%
4%
75%
4%
24
flagthe United States
9%
5%
73%
10%
807
flagAustralia
14%
2%
71%
10%
88
flagCanada
11%
6%
71%
6%
60
flagPoland
8%
13%
70%
7%
20082
flagSwitzerland
9%
15%
68%
3%
32
flagthe United Kingdom
12%
8%
67%
10%
240
flagGreece
6%
10%
66%
16%
30
flagBelarus
8%
13%
64%
11%
45
flagAustria
5%
16%
63%
15%
79
flagGermany
10%
15%
61%
9%
396
flagRussia
8%
15%
59%
13%
236
flagRepublic of Ireland
7%
14%
59%
18%
27
flagUkraine
9%
18%
58%
13%
232
flagKazakhstan
4%
25%
58%
8%
24
flagIndia
11%
8%
56%
20%
351
flagthe Philippines
13%
6%
56%
18%
44
flagthe United Arab Emirates
24%
20%
44%
4%
25
flagUnknown
21%
5%
42%
31%
19