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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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262:"Allergies? Must Be Pollen Corona Season Again"
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109:and a central bright area called an
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292:- Atmospheric Optics by Les Cowley
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129:in that the latter are formed by
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213:Calvert, J. B. (2 August 2003).
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549:Atmospheric optical phenomena
301:Corona from Fogged Eyeglasses
290:Explanation and image gallery
27:Optical phenomenon of the sky
85:) by individual small water
399:Lunar aureole as seen from
121:of a corona depends on the
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414:A solar corona soon after
193:"Jupiter corona from Iran"
167:Glory (optical phenomenon)
77:(or, occasionally, bright
260:King, Bob (31 May 2015).
162:Atmospheric diffraction
44:Beinn Mhòr (South Uist)
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242:. Atmospheric Optics
219:University of Denver
195:. Atmospheric Optics
191:Cowley, Les (2012).
18:Corona (meteorology)
386:Altocumulus floccus
89:and sometimes tiny
384:Lunar corona with
359:Golden Gate Bridge
357:Partial Corona at
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63:optical phenomenon
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269:. Retrieved
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244:. Retrieved
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222:. Retrieved
215:"The Corona"
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197:. Retrieved
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91:ice crystals
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34:Lunar corona
496:meteorology
271:17 November
83:planetlight
67:diffraction
51:meteorology
543:Categories
311:The Corona
246:2017-02-11
224:2017-02-11
199:2016-05-02
178:References
131:refraction
99:concentric
138:Airy disk
79:starlight
75:moonlight
240:"Corona"
172:22° halo
156:See also
87:droplets
71:sunlight
61:) is an
57:(plural
416:sunrise
317:Gallery
111:aureole
59:coronae
439:optics
401:Mumbai
149:Pollen
55:corona
494:This
437:This
127:halos
123:sizes
95:cloud
93:of a
500:stub
443:stub
273:2021
115:Moon
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