A Fire Rainbow Over New Jersey

Bild Note: 3 (2 Votes)

⏴ previous	Bild Upload von 18.02.2016 21:43	next ⏵
zorg.ch #107111 by [z]Barbara Harris @ 11.06.2008 00:00 - nach oben - A Fire Rainbow Over New Jersey Explanation: What is that inverted rainbow in the sky? Sometimes known as a fire rainbow for its flame-like appearance, a circumhorizon arc is created by ice, not fire. For a circumhorizon arc to be visible, the Sun must be at least 58 degrees high in a sky where cirrus clouds are present. Furthermore, the numerous, flat, hexagonal ice-crystals that compose the cirrus cloud must be aligned horizontally to properly refract sunlight like a single gigantic prism. Therefore, circumhorizon arcs are quite unusual to see. Pictured above, however, a rare fire rainbow was captured above trees in Whiting, New Jersey, USA in late May. digg_url = 'http://apod.nasa.gov/apod/ap080610.html'; digg_skin = 'compact'; Credit & Copyright