This afternoon, July 22, many people in Hanoi were surprised to discover a bright and clear double rainbow in the sky.
Mr. Vu Khac Tuan in My Dinh (Nam Tu Liem, Hanoi) said that initially, there was a rainbow in the sky, but then two concentric rainbows appeared, creating quite brilliant colors. Many people think this is a "double rainbow".
At the time the rainbow appeared, it was basically not raining in the center of Hanoi, but in the suburbs it was raining and the sky was cloudy.
According to meteorology, astronomy, optics and atmospheric experts, rainbows often appear after rain because the air has a lot of water vapor, high humidity... leading to light refraction.
A rainbow is the dispersion of sunlight as it refracts and reflects through raindrops.
The rainbow actually has many colors, of which the 7 prominent colors are red, orange, yellow, green, blue, indigo, and violet.
This phenomenon also signals that in the coming days there may be more rain, even storms.
At the same time, in provinces such as Bac Giang , Hai Duong... many people also saw this rainbow phenomenon.
>>> Below are pictures shared by people:
ANGEL
Source: https://www.sggp.org.vn/ha-noi-xuat-hien-cau-vong-doi-post750513.html
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