The sun halo appeared in Khanh Hoa
The big circle of colors surrounding the sun in Van Ninh district, Khanh Vinh at noon on March 28 lasted for two hours, making many people excited to take pictures.
The halo of the sun appears from 11am and is clearest around 12:30am to 1pm, surrounds the sun at the hottest weather, then fades.
The halo was taken by the people of Van Ninh district, Khanh Hoa at noon on March 28. Photo: Phu Khanh
According to scientists, this is an optical phenomenon, caused by sunlight shining through high-level clouds (at an altitude of 7-8 km). Clouds have a structure of ice crystals, sunlight and moon are refracted, reflected, creating circles.
Like the rainbow, the halo consists of 7 colors: red, orange, yellow, green, blue, indigo, purple, but the color order is arranged in reverse. The halo of the sun or moon is often a sign of impending rain. However, some halos are merely a signal of increased water in the upper atmosphere.
Halos around the moon are usually more frequent, while sun halos are very rare and are considered interesting weather phenomena.
Two years ago, aura appeared in Ho Chi Minh City and Southern provinces. Last year, the sun was seen in the ancient capital of Hue.
Phu Khanh
at Blogtuan.info – Source: vnexpress.net – Read the original article here
