Illustration of optical phenomena associated with the Sun and caused by ice crystals in the atmosphere by the German physicist Joseph von Fraunhofer (1787-1826). The phenomena include halos, sun dogs (parahelia) and arcs. From Theorie der Hofe, Nebensonnen und verwandter Phanomene mit Versuchen zur Bestatigung derselben by Joseph von Fraunhofer (1825). | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / ETH-Bibliotek Zurich |
Taille de l’image : | 3003 px × 3504 px |
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