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The Green Ray (French: Le Rayon vert) is a novel by the French writer Jules Verne published in and named after the optical phenomenon of the same Published in English:
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- THE GREEN RAY (LE RAYON VERT) | British Board of Film Classification
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- The Green Ray - Picture of Arnarbaer, Snaefellsbaer
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THE GREEN RAY (LE RAYON VERT) | British Board of Film Classification
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Send message Please wait Copy Event URL. Events are social. Allow Facebook friends to see your upcoming events? This fleeting spectacle is caused by the refraction of sunlight, which is particularly significant at sunset and sunrise, when the light travels through more of the Earth's atmosphere. The atmosphere bends the sunlight passing through it, separating the light into its different colors, much like a prism bends and splits sunlight into rainbows, according to Cornell University.
The various colors of light bend different amounts based on their wavelengths; shorter wavelengths blue, violet and green refract more strongly than longer wavelengths yellow, orange and red. As such, blue and violet light are scattered by the atmosphere while red, orange and yellow are absorbed, leaving the green light the most visible during the few seconds when the sun sets below or rises above the horizon.
However, green flashes are not always green, according to Andrew T. Young at San Diego State University. Sometimes, when the air is especially clear, enough of the blue or violet light rays make it through the atmosphere and create a blue flash instead of a green one.
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Nonetheless, green is the most common hue reported and captured in photos. There are four categories of green flashes: inferior mirage, mock mirage, subduct flash and green ray, according to an article published by the American Association for the Advancement of Science AAAS.
Nearly all green-flash sightings fall into the first two categories. Inferior mirage flashes are oval and flat and occur close to sea level when the surface of the water is warmer than the air above it. Mock mirage flashes, on the other hand, occur higher up in the sky and when conditions on the surface are colder than the air above. The flashes appear to be thin, pointy strips being sliced from the sun, and they last about 1 to 2 seconds. Subduct flashes are created when the sun appears to form an hourglass shape due to a phenomenon called atmospheric inversion , which occurs when a layer of warm air traps cool air and moisture close to the ground.
In this rare circumstance, the upper section of the sun may appear green for up to 15 seconds.