Residents of St. Petersburg observed a solar halo in the sky
[ad_1]
A phenomenon called a solar halo appeared in the sky over St. Petersburg. A selection of his photographs was published by the leading specialist of the Phobos Weather Center, Mikhail Leus.
During frosts, cirrus clouds with ice particles form in the high layers of the troposphere, in which sunlight is refracted. As a result, a mesmerizing circle of light can be observed around the star from the ground, which is called a “halo”.
This optical phenomenon is most often seen around the Sun, although it can also be created by moonlight, and sometimes around street lamps, although it appears differently in this case. A halo formed by sunlight sometimes resembles a rainbow as the light reflected and refracted by ice crystals is split into a spectrum. Most often, a halo appears as a 22-degree circle with colors ranging from red to yellow, but sometimes it appears in other forms, including an “inverted rainbow” and a blurred white spot in front of the star.
The halo phenomenon began to interest humanity long before the advent of modern meteorology. Some tried to predict the weather using similar meteorological phenomena: Russian folk signs say that the appearance of light rings around the Moon foreshadows rain, and the Chuvash believed that this phenomenon indicates further cooling.
[ad_2]
Source link
