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Historical Representations of the Parhelic Circle

Although the parhelic circle does not figure among the most common halos, it was often shown in historical book illustrations. The latter often show the parhelia in the wrong place or show other halos with wrong diameters or shapes.


The parhelic circle and other halos by Petrus van Musschenbroek after Christiaan Huygens. According to this model, halos were to form in hollow ice cylinders with an opaque nucleus. Musschenbroeks treatise on physics contains a large chapter on meteorological phenomena and was published in many editions and several languages. Petrus van Musschenbroek: Institutiones physicae conscriptae in usus adademicos. - Lugduni batavorum: Luchtmans, 1748. - Stadtbibliothek Trier, shelfmark D 1127 8°. © Stadtbibliothek Trier , Eva Seidenfaden

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