![]() The corona is separated from the photosphere by the relatively shallow chromosphere. The corona is 10 −12 times as dense as the photosphere, and so produces about one-millionth as much visible light. ![]() The Sun's corona is much hotter (by a factor from 150 to 450) than the visible surface of the Sun: the photosphere's average temperature is around 5 800 kelvin compared to the corona's 1 to 3 million kelvin. Physical features Ī drawing demonstrating the configuration of solar magnetic flux during the solar cycle Bengt Edlén, following the work of Grotrian (1939), first identified the coronal spectral lines in 1940 (observed since 1869) as transitions from low-lying metastable levels of the ground configuration of highly ionised metals (the green Fe-XIV line from Fe 13+ at 5 303 Å, but also the red Fe-X line from Fe 9+ at 6 374 Å). Instead, these spectral features have since been explained by highly ionized iron (Fe-XIV, or Fe 13+). The high temperature of the Sun's corona gives it unusual spectral features, which led some in the 19th century to suggest that it contained a previously unknown element, " coronium". ![]() In 1952, American astronomer Eugene Parker proposed that the solar corona might be heated by myriad tiny 'nanoflares', miniature brightenings resembling solar flares that would occur all over the surface of the Sun. In 1930, Bernard Lyot invented the coronograph, which allows viewing the corona without a total eclipse. French astronomer Jules Jenssen noted, after comparing his readings between the 18 eclipses, that the size and shape of the corona changes with the sunspot cycle. English astronomer Norman Lockyer identified the first element unknown on Earth in the Sun's chromosphere, which was called helium. Based in his own observations of the 1806 solar eclipse at Kinderhook (New York), de Ferrer also proposed that the corona was part of the Sun and not of the Moon. In 1809, Spanish astronomer José Joaquín de Ferrer coined the term 'corona'. Maraldi recognized that the aura visible during a solar eclipse belongs to the Sun, not to the Moon. In 1724, French-Italian astronomer Giacomo F. Corona-chan is usually shown holding a fan, Winnie the Pooh, Corona Beer, or a Chinese flag.Corona sketched by José Joaquín de Ferrer during the solar eclipse of Jin Kinderhook, New York. ![]() She wears red heels and possesses bat wings. She has green/red eyes, and can be shown with a black sclera. In some pictures, they are yellow/green/red with a black skull in the middle and the stick-things are black/green/red. She has red/green (depending on which version) hair accessories that look like viruses. She is created by the dark god Reylo to destroy humanity.Ĭorona-chan is usually shown as a young Asian woman with a red Qipao dress. The things that can stop her is Vaccine-chan and Mask-chan. She looks as if she will force-feed you bat soup? Very mysterious and cruel indeed. It is shown in a thread that she "is always drunk". Corona-chan also known as Wuhan-chan is a anime character and a meme who is from the 'Novel Coronavirus' (COVID-19) the outbreak which Wuhan provides in late 2019 and early 2020, now classified as a "worldwide pandemic".Ĭorona-chan seems to be a malicious, mischievous girl who loves to toy with humanity.
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