Fog bow? nooooo...Fog circle!
As we approached this abandoned Railway station at night we saw the unbelievable. A complete, 360-degree fog bow, created by the headlights of our car in fog. Laughter in the car...what followed was a series of images by all 3 of us (you can see the shadow of the tripods). Now...that's something different isn't it.
About the Fog Bow
A fog bow is a similar phenomenon to a rainbow, however, as its name suggests, it appears as a bow in fog rather than rain. Because of the very small size of water droplets that cause fog—smaller than 0.05 millimeters (0.0020 in)—the fog bow has only very weak colors, with a red outer edge and bluish inner.
In many cases when the droplets are very small, fog bows appear white, and are therefore sometimes called white rainbows. This lack of color is a distinguishing feature from a glory, which has multiple pale colored rings caused by diffraction. When the droplets forming it are almost all of the same size the fog bow can have multiple inner rings, or supernumeraries, that are more strongly colored than the main bow. According to NASA:
The fogbow's lack of colors is caused by the smaller water drops ... so small that the wavelength of light becomes important. Diffraction smears out colors that would be created by larger rainbow water drops.
There is no Fog Circle definition....enjoy the image anyway. The circle is NOT photoshopped.
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