The bright circle around the Sun seen in the picture is known as a halo. What causes it?

refraction of light in ice crystals
refraction in the lens of the eye or lens
refraction of light in water drops
reflections from the water surface
Halo is the name for a family of optical phenomena produced by light interacting with ice crystals suspended in the atmosphere. Halos can have many forms, ranging from colored or white rings to arcs and spots in the sky. Among the best known halo types are the circular halo (properly called the 22° halo), Other common optical phenomena involving water droplets rather than ice crystals include the glory and the rainbow.
Ts
0
Correct this question
5
Very interesting!
reach: rather globalatmosphereillusionsopticsphysicsSuntechnology

Answers by country

refraction of light in ice crystals
refraction in the lens of the eye or lens
refraction of light in water drops
reflections from the water surface
answers
flagAustralia
52%
17%
21%
8%
23
flagUnknown
50%
10%
40%
0%
10
flagSwitzerland
46%
20%
26%
0%
15
flagthe United States
44%
22%
25%
4%
92
flagGreece
42%
10%
42%
5%
19
flagGermany
39%
25%
29%
4%
97
flagPoland
34%
31%
26%
7%
10161
flagIndia
31%
24%
33%
7%
198
flagthe United Kingdom
27%
27%
37%
6%
48
flagAustria
27%
18%
42%
9%
33
flagthe Philippines
25%
0%
58%
16%
12
flagCanada
23%
23%
46%
7%
13