Weather Tidbits: Green Flash
Another optical phenomenon is explained in this Weather Tidbits. A green flash is a small green color that appears on the upper part of the sun as it rises or sets. This happens due to refraction or sunlight in the thick atmosphere, as the sun is near the horizon. The blue and violet light bend the most, scattering that light, and only a small sliver reaches our eye producing the green flash. The flash lasts about a second, but can last longer in polar regions where the sun slowly rises and sets.