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Double pane windows—elastic deformations, gas thermodynamics, thermal and optical phenomena

  • Double pane windows are common objects which can enrich physics teaching at undergraduate level at least in five different fields. First, having sealed inner spaces filled with gas, one can discuss gas law problems upon changes of pressure and/or temperature. Second, when discussing temperature differences between inside and outside, one needs to take into account the associated heat transfer mechanisms which define the pane temperatures, enclosing the gas. Third, using elastic properties of theDouble pane windows are common objects which can enrich physics teaching at undergraduate level at least in five different fields. First, having sealed inner spaces filled with gas, one can discuss gas law problems upon changes of pressure and/or temperature. Second, when discussing temperature differences between inside and outside, one needs to take into account the associated heat transfer mechanisms which define the pane temperatures, enclosing the gas. Third, using elastic properties of the glass, one may treat deformations of the window panes upon those changes or additional manually applied external pressure. Fourth, the reflective properties of glass combined with the pane deformations result in concave or convex mirrors, which when illuminated by the Sun, may lead to focal points on projection areas such as facing houses. Fifth, such areas receive an increased irradiance which leads to associated thermal effects. Starting from the most obvious daily life phenomenon, the fascinating caustics of reflected sunlight on streets or walls, all of these double pane window phenomena are investigated experimentally as well as theoretically.show moreshow less

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Metadaten
Author:Michael VollmerGND, Klaus-Peter MöllmannGND, Hans Joachim Schlichting
DOI:https://doi.org/10.1088/0143-0807/35/4/045023
Parent Title (English):In: European Journal of Physics 35 (2014) 4, 045023
Document Type:Article
Language:English
Year of Publishing:2014
Date of Publication (online):2014/10/27
Release Date:2014/10/27
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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