Thursday, December 02, 2004

Aureole

Brightly illuminated area surrounding an atmospheric light source, such as the Sun, when the light is propagated through a medium containing many sizes of particles or droplets that are large compared to the wavelength of the light. Because the wavelength of visible light is about 0.00005 cm (0.5 micrometre), particles of size greater than about 0.0001 cm (1 micrometre) will give rise

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