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suspended in the air can also cause diffraction of sunlight that produces coronae. Because pollen grains are not always spherical, the resulting pollen coronae often have characteristic elliptic shape and brighter spots in them. They can be seen during blooming season where there is significant
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of the water droplets involved; smaller droplets produce larger coronae. For the same reason, the corona is the most pronounced when the size of the droplets is most uniform. Coronae differ from
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source of pollen like forests. They are more easily seen during sunset or sunrise as there is less sun glare and the light path through pollen laden atmosphere is longer.
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or on a foggy glass surface. In its full form, a corona consists of several
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Rings around the sun and moon: coronae and diffraction
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251:"Allergies? Must Be Pollen Corona Season Again"
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295:Experimental simulations of pollen coronas
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98:and a central bright area called an
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281:- Atmospheric Optics by Les Cowley
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202:Calvert, J. B. (2 August 2003).
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538:Atmospheric optical phenomena
290:Corona from Fogged Eyeglasses
279:Explanation and image gallery
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16:Optical phenomenon of the sky
491:. You can help Knowledge by
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74:) by individual small water
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388:Lunar aureole as seen from
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110:of a corona depends on the
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403:A solar corona soon after
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182:"Jupiter corona from Iran"
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151:Atmospheric diffraction
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231:. Atmospheric Optics
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184:. Atmospheric Optics
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346:Partial Corona at
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258:. Retrieved
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233:. Retrieved
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211:. Retrieved
204:"The Corona"
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186:. Retrieved
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80:ice crystals
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23:Lunar corona
485:meteorology
260:17 November
72:planetlight
56:diffraction
40:meteorology
532:Categories
300:The Corona
235:2017-02-11
213:2017-02-11
188:2016-05-02
167:References
120:refraction
88:concentric
127:Airy disk
68:starlight
64:moonlight
229:"Corona"
161:22° halo
145:See also
76:droplets
60:sunlight
50:) is an
46:(plural
405:sunrise
306:Gallery
100:aureole
48:coronae
428:optics
390:Mumbai
138:Pollen
44:corona
483:This
426:This
116:halos
112:sizes
84:cloud
82:of a
489:stub
432:stub
262:2021
104:Moon
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