On the morning of the 5th day of the Lunar New Year, many people in Tay Ninh province were surprised to see a strange rainbow appear on top of Ba Den mountain.
On the morning of January 26, the 5th day of the Lunar New Year, many people from Suoi Da commune, Duong Minh Chau district, Tay Ninh recorded the image of Ba Den mountain covered by a strange rainbow. Many people called this phenomenon a fire rainbow.
Many people recorded images of a fire rainbow appearing around Ba Den Mountain.
Mr. Nguyen Chau Tuan, a communications officer of SUN WORLD BA DEN MOUNTAIN, said that the fire rainbow event that appeared right after the opening ceremony of the Ba Den Mountain spring festival brought joy and excitement to tourists who were here for spring.
A strange rainbow appeared on Ba Den Mountain right after the opening of Ba Den Mountain festival.
According to experts, a fire rainbow is an optical phenomenon of the halo type. Fire rainbows are formed by the refraction of sunlight or sunlight in ice crystal disks suspended in the atmosphere and typically in microscopic clouds.
Photo taken from Duong Minh Chau district
If fully formed, a fire rainbow typically has a large, vibrant spectrum of color running parallel to the horizon and well below the sun or moon. The distance between the fire rainbow and the sun or moon is often twice that of the 22⁰ halo.
After the lenticular clouds appeared, Ba Den Mountain just welcomed a strange rainbow.
Typically, a fire rainbow occurs when certain factors are met: light must pass through a stratus or stratus cloud containing ice crystals at a specific angle; the sun must be at least 58⁰ above the horizon. At the same time, the ice crystals that are split into colors by the light must be hexagonal in shape and their faces must run parallel to the ground.
When light passes through the surfaces of these crystals, it causes refraction. This bending of light is similar to the bending of light through a prism. If the crystals were aligned, the tiny clouds would not act like a prism, giving them the appearance of a rainbow.
Besides, the thin shape of the clouds also makes us imagine the shape of a fire. That is why people call it a fire rainbow.
