One unusual, fantastically beautiful and at the same time very rare natural phenomena considered fiery rainbow.So scientists have dubbed the atmospheric phenomenon - okologorizontalnuyu (or rounded horizontal) arch, appear in the background of high-altitude pulmonary clouds consisting of ice crystals.This atmospheric glow arises spontaneously - in contrast to the usual rainbow before the fire does not rain.
factors appearing in the sky fiery rainbow
rare lucky ones in the world can observe this unique natural phenomenon.As fiery rainbow formed and that it serves as a harbinger?One of the main factors leading to roundly horizontal arc is a geographical location - latitude of the northern and southern hemispheres, which are not further 55 degrees of the equator.Another important condition scientists call the presence of cirrus clouds - whisker white inhabitants of the upper layers of the troposphere, free flowing sunlight.Ice crystals, which are formed of cirrus clouds should take a horizontal position relative to the ground.Daylight it usually is high in the sky, at a distance of 6 000 km and above.
Sophisticated imagination of Mother Nature
Magic appearance of stunning color flickering on the horizon is surprisingly simple.In the summer, the bright glow of cirrus clouds caused by the refraction of sunlight.To fire a rainbow appeared, the sun's rays should be oriented at an angle of 58 degrees relative to the horizon.They penetrate through the side wall of each hexagonal ice crystals and continue its way through the bottom of his face.In a chain of frozen hexahedron, the sun's rays "run" all facets of the natural structure until the last pieces of ice, and "cut out" the fire.The peak brightness of this unusual natural phenomenon, according to meteorologists, can be seen when the sun shines on the cirrus clouds at an angle of 68-69 degrees.This optical effect allows you to split the light into its spectral colors and visually get such an amazing phenomenon as fiery rainbow.It may extend for hundreds of square kilometers!Her aura is so great that the arc seems disposed parallel to the horizon.
Fire Rainbow: photo
few who can resist the temptation to make your own picture magically beautiful and fascinating play of light.Chance to see this natural phenomenon in some American states: Idaho, New Jersey, Texas, Houston and Los Angeles, is much higher, as a bright, high position of the sun in these places can observe more than 700 hours!In European countries, suitable conditions do not last more than 220-250 hours.Fire rainbow in Russia increasingly visible in the extreme south of the country.In the European part of our country and in most of the Siberian region to observe a bright glow of cirrus clouds can only be a few mountains or with binoculars from the top of a centuries-old pine trees.
