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What is the easiest way to see this photo in 3-D?

use polarizing glasses
use red and cyan glasses
use wide-angle glasses
squint eyes
This is anaglyph 3D, an image which contains two differently filtered colored images, one for each eye. Red/Cyan channels are the most common, but Magenta/Green and Blue/Yellow are also popular.
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Answers by country

use polarizing glasses
use red and cyan glasses
use wide-angle glasses
squint eyes
answers
flagGermany
17%
80%
0%
2%
40
flagUnknown
7%
78%
0%
14%
14
flagAustralia
11%
77%
3%
7%
27
flagCanada
15%
62%
3%
18%
32
flagthe United States
18%
60%
4%
14%
364
flagPoland
23%
56%
8%
10%
7986
flagIndia
24%
50%
10%
11%
147
flagthe United Kingdom
20%
49%
7%
20%
97
flagthe Philippines
31%
45%
9%
13%
22
flagAustria
40%
40%
20%
0%
10
flagGreece
54%
27%
9%
9%
11

Who should you expect to show stronger red-eye effect?

blue-eyed people
brown-eyed people
elders
there is no difference

Why were photographic prints sepia toned?

sepia process was cheaper than black and white
for improved resistance
it is simply ageing of paper
it is the effect of exposition to sunlight

World's fastest high-speed cameras were built to take photos of specific objects. What kind of objects?

bullet shots
rocket launches
nuclear bomb explosions
sound waves

Augustus was born on 1 January 10BC. Which birthday did he celebrate at 1 January 10AD?

19
20
21
80