Fire Rainbow Facts
A
beautiful work of nature, fire rainbows are not a common sight. Fire
rainbows are circumhorizon arcs commonly known as CHA in scientific
language. Fire rainbows occur in cirrus clouds which are wispy and
thin.For this incredible sight the cirrus clouds should be at 20000 feet
height with sun at 58 degrees. The amount of ice crystals in the clouds
need to be appropriate and properly aligned for the light to pass
through it. The phenomenon is the result of refraction of light when it
passes through vertical side and exits from the rear as it is in the
case of a prism. If the inclination is of 90 degrees the colors can be
seen well arranged and the cloud seems bursting with colorful flames.
Though the name suggests it to be a hot, flammy phenomenon but it is
cold like ice. This spectacular event of nature lasts for a short time
and is a rare sight as all factors need to be available at correct time
and at correct position.
No comments:
Post a Comment