õhusambrites

õhusambrites refers to a phenomenon observed in certain atmospheric conditions, particularly in colder climates. It describes the appearance of vertical columns of light that extend upwards from ground-level light sources. These pillars are created when light reflects off ice crystals suspended in the air. The ice crystals, typically in the form of thin, hexagonal plates, are often present during very cold, clear, and calm weather.

The precise appearance of an õhusambrites can vary depending on the size and shape of the ice crystals, as well as the specific light source. Common light sources that can produce this effect include streetlights, car headlights, and even the moon or sun. The pillars of light are often most noticeable when the light source is relatively low on the horizon. The light is reflected and refracted by the flat surfaces of the ice crystals, which are oriented horizontally as they fall through the atmosphere.

This optical phenomenon is not unique to any particular region but is more frequently reported in areas experiencing prolonged periods of sub-zero temperatures. While the term õhusambrites is Estonian, similar atmospheric optical effects are known by different names in other languages, such as "light pillars" or "solar pillars." The scientific explanation involves the principles of light reflection and refraction, with the ice crystals acting as tiny mirrors.