PIX4671609: Iridescent clouds - Iridescent clouds - When parts of a cloud are very thin and contain water droplets of the same size, the diffraction of the solar light that passes through them can cause colour comparable to those of crowns. We are talking about iridescent or iridescent clouds. Irization is caused by diffraction of sunlight by small droplets in high altitude clouds / Bridgeman Images
PIX4671149: Rainbow at sunrise - Rainbow at sunrise - Arc - en - ciel observes 17 December 2005. At sunrise, the glowing light of the Sun caused an almost complete absence of blue and green colors in the rainbow. December 17, 2005. Rainbow seen at sunrise. Blue and green colors are almost invisible, because of this bright reddish sunshine / Bridgeman Images
PIX4671655: Noctilucent clouds in Brittany - Noctilucent clouds in Brittany - Noctulescent clouds, very high altitude clouds, very rarely visible in France, photographs on 24 June 2009 in Ploumanac'h (Cotes d'Armor). These high altitude clouds are usually seen in summer months but nearer the poles than France. Ploumanac'h (Cotes d'Armor), Brittany, June 24 2009 / Bridgeman Images
PIX4670884: Halo around the Sun - Halo around the Sun - Halos are due to the light of the Sun reflected by high-altitude clouds, Cirrostratus, composed of ice crystals. They bend the light and cause a perfect circle around the Sun. In this photo, a parhely is also visible. (c) 2006 Jerry Lodriguss/www.astropix.co / Bridgeman Images
PIX4670961: Halo around the Sun and condensation train - Sun Halo and contrail. - Halos are due to the light of the Sun reflected by high-altitude clouds, cirrostratus, composed of ice crystals. They bend the light and thus cause a perfect circle around the Sun. 14 May 2006, Finistere. Halos are caused by sunlight being refracted by cirro - stratus clouds. These are thin clouds, very high in the atmosphere, and are composed of ice crystals. They bend light at a 22 degree angle, which creates a halo around the sun that is 44 degrees in diameter. May 14, 2006 / Bridgeman Images
PIX4670923: Halo around the Sun - Sun Halo - Halos are due to the light of the Sun reflected by high-altitude clouds, cirrostratus, composed of ice crystals. They bend the light and cause a perfect circle around the Sun. Here we can see: - around the Sun, the halo of 22* radius, rather little contrast. - at the top of the halo of 22* radius, the upper arc tangent in the shape of a U evase. - above, “” parallele”” to the halo of 22* radius, the arc of Parry. - near the zenith, the arc cirucmzenithal, very colourful. Quimper Halos are caused by sunlight being refracted by cirro-stratus clouds. These are thin clouds, very high in the atmosphere, and are composed of ice crystals. They bend light at a 22 degree angle, which creates a halo around the sun that is 44 degrees in diameter. In brief: - around the Sun, the 22* halo, not very contrasted. - atop the 22* halo, the upper tangent arc (a splayed U shape). - above it, “” parallel”” to the 22* halo, the Parry arc. - near the zenith, the cirucmzenithal arc, very colorful. October 28, 2006 Quimper (France) / Bridgeman Images
PIX4671634: Noctulescent clouds - Noctilucent clouds - Noctilucent clouds, very high altitude clouds, photographs in July 2009 in Russia. These rare clouds are called noctilucent or “” night shining” as they seem to glow in the dark. They are caused by ice crystals at about 80 km altitude. These crystals reflect sunlight when the sun is well below the horizon. They are properly known as polar mesospheric clouds and are under intense study as it remains a mystery as to how they are formed. Image taken in july 2009 in Russia / Bridgeman Images
PIX4671692: Halo around the Moon - Lunar Halo - This halo is due to the light of the Moon reflected by high-altitude clouds, cirrostratus, composed of ice crystals. They bend the light and cause a perfect circle around the Moon. This 22-degree lunar halo is quite contrasting and colourful, although the Moon is not Full (three days after the Full Moon). October 2, 2004. Lunar halos are caused by moonlight being refracted by cirro - stratus clouds. These thin clouds are located very high in the atmosphere, and are composed of ice crystals. This 22 degrees lunar halo is rather contrasted, although the Moon was not Full (three days after the full moon). 2 October 2004 / Bridgeman Images
PIX4671043: Halo around the Sun - Sun Halo - Halos are due to the light of the Sun reflected by high-altitude clouds, cirrostratus, composed of ice crystals. They bend the light and cause a perfect circle around the Sun. February 2010. Halos are caused by sunlight being refracted by cirro - stratus clouds. These are thin clouds, very high in the atmosphere, and are composed of ice crystals. They bend light at a 22 degree angle, which creates a halo around the sun that is 44 degrees in diameter. February 2010 / Bridgeman Images
PIX4671060: Halo around the Sun - Sun Halo - Halos are due to the light of the Sun reflected by high-altitude clouds, cirrostratus, composed of ice crystals. They bend the light and cause a perfect circle around the Sun. Halos are caused by sunlight being refracted by cirro - stratus clouds. These are thin clouds, very high in the atmosphere, and are composed of ice crystals. They bend light at a 22 degree angle, which creates a halo around the sun that is 44 degrees in diameter / Bridgeman Images
PIX4672030: Mirage inferior - Inferior mirage - Mirage inferior caused by the difference in temperature of the sea warmer than that of the air. 1 November 2006, Beg Meil (Finistere). Inferior mirage caused by the differences of temperature between sea and air. November 1 2006, Beg Meil (Finistere - France / Bridgeman Images
PIX4672040: Mirage inferior - Inferior mirage - Mirage inferior caused by the difference in temperature of the sea warmer than that of the air. 1 November 2006, Beg Meil (Finistere). Inferior mirage caused by the differences of temperature between sea and air. November 1 2006, Beg Meil (Finistere - France / Bridgeman Images
PIX4672071: Lower Mirage - Inferior mirage - Lower Mirage which gives the illusion that the rocks (on the left and at the entrance of the port) float above the horizon, not far from the Eckmuehl lighthouse (Penmarc'h, South Finistere). Inferior mirage (at left) near lighthouse in Penmarc'h, Brittany, France. Inferior mirages are caused by the differences of temperature between sea and air / Bridgeman Images