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
8%
4%
79%
8%
24
flagAustralia
12%
1%
76%
7%
78
flagthe United States
8%
5%
74%
9%
731
flagCanada
12%
8%
73%
4%
49
flagthe Netherlands
5%
0%
73%
5%
19
flagGreece
7%
10%
71%
10%
28
flagPoland
8%
13%
69%
7%
18871
flagthe Philippines
11%
5%
68%
11%
35
flagthe United Kingdom
12%
9%
67%
8%
203
flagBelarus
7%
7%
67%
14%
28
flagRussia
6%
12%
64%
15%
111
flagAustria
5%
20%
64%
8%
34
flagGermany
11%
15%
62%
8%
190
flagUkraine
7%
18%
60%
14%
164
flagKazakhstan
7%
14%
57%
14%
14
flagIndia
12%
9%
56%
18%
281
flagCzech Republic
7%
14%
50%
28%
14
flagSwitzerland
13%
33%
46%
0%
15
flagUnknown
21%
5%
42%
31%
19
flagSouth Africa
46%
7%
38%
7%
13