Atmospheric diffraction

$Sunrise animation (fifteen seconds/frame) with diffraction rings caused by water droplets and only visible when the sun is near the horizon$

$Solar diffraction ring$

$Lunar diffraction ring$

Atmospheric diffraction is manifested in the following principal ways:

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. (Note: some sound may be propagated through the object depending on material).

单词	Atmospheric Diffraction
释义	Atmospheric Diffraction 英语百科 Atmospheric diffraction $Sunrise animation (fifteen seconds/frame) with diffraction rings caused by water droplets and only visible when the sun is near the horizon$ $Solar diffraction ring$ $Lunar diffraction ring$ Atmospheric diffraction is manifested in the following principal ways: 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. (Note: some sound may be propagated through the object depending on material).
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Atmospheric Diffraction

Atmospheric diffraction