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Artificially generated halos: rotating sample crystals around various axes

  • Abstract So far experiments with artificial halos from single transparent crystals have suffered from the lack of apparatus that allows simultaneous rotation around two and three axes. A new setup is presented which overcomes these restrictions by combining electrical as well as pneumatic concepts. This enables reproducible experiments of the most common halos observed in nature and for the first time artificial ring halos from single hexagons rotating around three axes simultaneously. InAbstract So far experiments with artificial halos from single transparent crystals have suffered from the lack of apparatus that allows simultaneous rotation around two and three axes. A new setup is presented which overcomes these restrictions by combining electrical as well as pneumatic concepts. This enables reproducible experiments of the most common halos observed in nature and for the first time artificial ring halos from single hexagons rotating around three axes simultaneously. In addition, an old qualitative halo demonstration based on perceived colors of rotating colored areas whose contours represent scattering plots has been reinvestigated and the usually nonsaturated color of artificial parhelia was visualized using a crossed prism method. These new experiments are discussed in the context of all known artificial halo experiments. © 2014 Optical Society of Americashow moreshow less

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Metadaten
Author:Michael Großmann, Klaus-Peter MöllmannGND, Michael VollmerGND
DOI:https://doi.org/10.1364/AO.54.000B97
Parent Title (English):Appield Optics 54 (2015) 4, B97-B106
Document Type:Article
Language:English
Year of Publishing:2015
Date of Publication (online):2015/12/15
Release Date:2015/12/15
First Page:B97
Last Page:B106
Institutes:Fachbereich Technik
Dewey Decimal Classification:Naturwissenschaften und Mathematik / Physik / Physik
University Bibliography:Hochschulbibliografie
Licence (German):Creative Commons - Namensnennung, Nicht kommerziell, Keine Bearbeitung
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