Cooling balloons with liquid nitrogen

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We present an undergraduate level experiment in which the radius of a rubber balloon is measured as it is cooled with liquid nitrogen. For balloons filled with simple gases that condense at liquid nitrogen temperatures, we found that the volume decreases linearly with time. We compared our measureme...

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Autores principales: Ferrari, Hernán Javier, Bekeris, Victoria Isabel
Publicado: 2010
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00029505_v78_n12_p1312_Moreno
http://hdl.handle.net/20.500.12110/paper_00029505_v78_n12_p1312_Moreno
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00029505_v78_n12_p1312_Moreno
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spelling paper:paper_00029505_v78_n12_p1312_Moreno2023-06-08T14:23:15Z Cooling balloons with liquid nitrogen Ferrari, Hernán Javier Bekeris, Victoria Isabel We present an undergraduate level experiment in which the radius of a rubber balloon is measured as it is cooled with liquid nitrogen. For balloons filled with simple gases that condense at liquid nitrogen temperatures, we found that the volume decreases linearly with time. We compared our measurements with a simplified model based on elementary kinetic theory and thermodynamics that explains this behavior. Students are encouraged to test the validity of the model by repeating the experiment using gas mixtures and gases that do not condense at liquid nitrogen temperatures. © 2010 American Association of Physics Teachers. Fil:Ferrari, H. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Bekeris, V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2010 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00029505_v78_n12_p1312_Moreno http://hdl.handle.net/20.500.12110/paper_00029505_v78_n12_p1312_Moreno
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description We present an undergraduate level experiment in which the radius of a rubber balloon is measured as it is cooled with liquid nitrogen. For balloons filled with simple gases that condense at liquid nitrogen temperatures, we found that the volume decreases linearly with time. We compared our measurements with a simplified model based on elementary kinetic theory and thermodynamics that explains this behavior. Students are encouraged to test the validity of the model by repeating the experiment using gas mixtures and gases that do not condense at liquid nitrogen temperatures. © 2010 American Association of Physics Teachers.
author Ferrari, Hernán Javier
Bekeris, Victoria Isabel
spellingShingle Ferrari, Hernán Javier
Bekeris, Victoria Isabel
Cooling balloons with liquid nitrogen
author_facet Ferrari, Hernán Javier
Bekeris, Victoria Isabel
author_sort Ferrari, Hernán Javier
title Cooling balloons with liquid nitrogen
title_short Cooling balloons with liquid nitrogen
title_full Cooling balloons with liquid nitrogen
title_fullStr Cooling balloons with liquid nitrogen
title_full_unstemmed Cooling balloons with liquid nitrogen
title_sort cooling balloons with liquid nitrogen
publishDate 2010
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00029505_v78_n12_p1312_Moreno
http://hdl.handle.net/20.500.12110/paper_00029505_v78_n12_p1312_Moreno
work_keys_str_mv AT ferrarihernanjavier coolingballoonswithliquidnitrogen
AT bekerisvictoriaisabel coolingballoonswithliquidnitrogen
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