Thursday, 6 November 2008
Rainbow, a Sign of Hope
I got these photos from my neighbour, who saw this rainbow over our street.
A rainbow is an optical and meteorological phenomenon that causes a spectrum of light to appear in the sky when the Sun shines onto droplets of moisture in the Earth's atmosphere. They take the form of a multicoloured arc, with red on the outer part of the arch and violet on the inner section of the arch.
More rarely, a secondary rainbow is seen, which is a second, fainter arc, outside the primary arc, with colours in the opposite order, that is, with violet on the outside and red on the inside.
A rainbow spans a continuous spectrum of colours, but due to significant overlap of differing wavelengths, these are not spectral colours. Despite the continuity of the spectrum, the sequence is traditionally quantised. The most commonly cited and remembered sequence, in English, is Newton's sevenfold red, orange, yellow, green, blue, indigo, and violet. "Roy G. Biv" and "Richard Of York Gave Battle In Vain" are popular mnemonics. Rainbows can be caused by other forms of water than rain, including mist, spray, dew, fog, and ice.
Moreover, rainbows can have shapes other than a bow (arc), including stripes, circles, or even flames.
Klaus, Sandy, Ivar, Wren, Fishing Guy & Louise
Thank you so much for this great meme. For other wonderful skies all over the world click on logo or here