Complex Fogbow - Wendelstein Mountain, Germany

Last updated on September 16, 2023

Complex Fogbow - Wendelstein Mountain, Germany

On October 3rd, 2005, Carolin Baumann captured a mesmerizing image of a fogbow on Wendelstein Mountain in Bavaria, Germany. This particular fogbow had a complex appearance, which was attributed to the use of a polarizing filter on the camera. Fogbows, rainbows, and glories exhibit strong polarization of light, resulting in unique optical phenomena.

Fogbows are formed when light interacts with tiny water droplets suspended in the air. These droplets are much smaller than raindrops, typically less than 0.05 millimeters in diameter. When sunlight passes through these droplets, it undergoes a process called diffraction, where the light waves are bent and scattered. The diffraction of light in fog droplets produces a faint and white-colored bow known as a fogbow.

The complex appearance of the fogbow captured by Carolin Baumann can be attributed to the presence of supernumerary bows. Supernumerary bows are additional, fainter bows that appear on the inside edge of the primary fogbow. These bows are caused by interference patterns created by the diffraction of light waves within the water droplets. The use of a polarizing filter on the camera further enhanced the visibility of these supernumeraries, adding to the complexity of the fogbow's appearance.

The phenomenon of polarization plays a crucial role in the formation and observation of fogbows, rainbows, and glories. Polarization refers to the orientation of light waves as they propagate through space. When sunlight interacts with water droplets in the atmosphere, it becomes partially polarized. This means that the light waves oscillate predominantly in a specific direction. The polarization of light is responsible for the vibrant colors and distinctive features observed in atmospheric optical phenomena.

Wendelstein Mountain in Germany serves as an ideal location for observing fogbows due to its favorable atmospheric conditions. The mountain's elevation and geographical features create an environment where fog and mist often form, providing ample opportunities for fogbow formation. The unique combination of topography, weather patterns, and moisture content in the air contributes to the frequent occurrence of fogbows in this region.

The use of a polarizing filter on cameras has become increasingly popular among photographers interested in capturing atmospheric optical phenomena. By selectively filtering polarized light, these filters enhance the visibility and contrast of various features, such as supernumerary bows, within fogbows. This allows photographers to capture stunning images that showcase the intricate details and complexities of these natural phenomena.

In conclusion, the complex fogbow captured on Wendelstein Mountain in Germany provides a fascinating glimpse into the world of atmospheric optics. Through the use of a polarizing filter, Carolin Baumann was able to showcase the intricate details and supernumerary bows within the fogbow. The phenomenon of polarization, coupled with favorable atmospheric conditions, contributes to the formation and observation of these awe-inspiring natural displays. Wendelstein Mountain continues to be a hotspot for fogbow sightings, attracting photographers and enthusiasts eager to witness and document these captivating atmospheric phenomena.

Fogbow imaged by Carolin Baumann on Wendelstein Mountain in Bavaria, Germany on 3rd October '05. The complex appearance of the fogbow supernumeraries arises because the image was taken with a polarizing filter on the camera. The light of fogbows, rainbows and glories is strongly polarized. Image ©2005 Carolin Baumann, shown with permission.

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Reference Atmospheric Optics

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