A photo from open sources
This phenomenon is characteristic exclusively for severe frost. IN Monday, December 24, when the thermometer fell to -30 degrees, and in places up to -33, the inhabitants of Tver observed an amazing the phenomenon is small halo circles around streetlights. The phenomenon was observed at night, the city was all painted luminous pillars.
A photo from open sources
As told “KP” Rector of Tver State University Andrei Belotserkovsky, this is one of the features of severe frost, and is associated this phenomenon with small crystals of ice, which, forming in the air, perform the function of a prism. From their glow and appear rainbow circles of light folding in such unusual colored columns. Olga BLINOVA
