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The most distinct part of this pattern is a central, nearly white disk. The result is a pattern of rings, which seem to emanate from the Sun, the Moon, a planet, or another astronomical object. This degree of bending of light depends on the wavelength (color) of light and the size of the particles. When light travels through thin clouds made up of nearly uniform sized water or aerosol droplets or ice crystals, diffraction or bending of light occurs as the light is diffracted by the edges of the particles. See also: Atmospheric optics Solar diffraction ring (Note: some sound may be propagated through the object depending on material). However, if the object has a diameter greater than the acoustic wavelength, a 'sound shadow' is cast behind the object where the sound is inaudible. The sound waves bend appreciably around the solid object. This produces the effect of being able to hear even when the source is blocked by a solid object.

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Sound wave diffraction is the bending of sound waves, as the sound travels around edges of geometric objects.Radio wave diffraction is the scattering of radio frequency or lower frequencies from the Earth's ionosphere, resulting in the ability to achieve greater distance radio broadcasting.Sunrise animation (15 seconds/frame) with diffraction rings caused by water droplets and only visible when the Sun is near the horizonĪtmospheric diffraction is manifested in the following principal ways: Not to be confused with Atmospheric refraction.

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