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Rainbows can be full circles. However, the observer normally sees only an arc formed by illuminated droplets above the ground, [ 3 ] and centered on a line from the Sun to the observer's eye. In a primary rainbow, the arc shows red on the outer part and violet on the inner side.
The anthelic point is often used as a synonym for the antisolar point, but the two should be differentiated. [1] While the antisolar point is directly opposite the sun, always below the horizon when the sun is up, the anthelic point is opposite but at the same elevation as the sun, and is therefore located on the parhelic circle.
A full rainbow is actually a complete circle, but you can only see part of it from the ground.
Parhelic circle – Type of halo, an optical phenomenon; Parry arc – Optical phenomenon; Rainbow – Meteorological phenomenon; Subhelic arc – Rare halo; Subparhelic circle – Rare atmospheric optical phenomenon; Subsun – Glowing spot that can be seen within clouds or haze when observed from above; Sun dog – Atmospheric optical phenomenon
If you need to take a moment to brighten your day, take a peek at this amazing circle rainbow that formed over Niagara Falls. Honestly, you have to see it to believe it. The gorgeous sight was ...
In secondary rainbows, that order is reversed with violet coming first from top to bottom. A secondary rainbow is much fainter than a primary one because the intensity of light is reduced.
Above their circle a halo appeared, shining very brightly, extending in its breadth as if it were some kind of city. Inside this circle a half-circle appeared, similar to a rainbow, distinct in its fourfold color, in the higher part curved towards the two aforementioned Suns, touching them in an embrace of the Sun. [24]
It takes all the colors of the rainbow for us to see it that way. It happens because of something called the Rayleigh effect, or Rayleigh scattering, named after a British scientist who first ...