there is a unique phenomenon in the city of Eura, Finland, on January 12, 2016 night. In the sky formed a direction such as ‘map’ of the city.
Initially, this phenomenon occurs because the air temperature is too cold, so the street lights reflected off the ice flakes in the air, produce the phenomenon of light pillar.
The phenomenon of light pillar is the formation of a light beam through the light source resembles a pile of earth. On Saturday, photographer Mia Heikkila standing between the pillars of light collection in residential homes, Kauttua, so that he can see the arrangement of the bottom. He soon realized, the composition of the light pillar forming something familiar.
“There Kauttua Jalam map drawn in the sky!” Heikkila said quoted by Science Alert, Wednesday (19/01/2016).
Why does this happen? When the temperature is low, almost frozen, ice crystals are flat hexagonal form in the air. Not only in height, but also close to the ground. Set crystals form a kind of giant mirrors that reflect light toward the ground.
Light pillar extends toward the sky. However, restrained by a collection of light ice crystals that reflect back to the ground, so that the light was fading getting to the top.
Pillar of light is an optical phenomenon similar to the occurrence of the phenomenon of halo (halo), occurs because of the interaction of light and ice crystals. But unlike the halo, the light reflected back downwards, not sideways.
When multiple sources of light in a narrow area, such as in this Kauttua, the reflected light to form an image of arrangement under the street lights, visible to a person standing on the ground as projected into the sky.
In this case, the reflected light shaped like a road map, and accurate.
In fact, it could be better than the map that is currently written, because the ‘map’ in the sky featured along reshuffle carried out recently.