Cooling balloons with liquid nitrogen

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: Moreno, A.J., Ferrari, H., Bekeris, V.
Formato: JOUR
Acceso en línea: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 todo:paper_00029505_v78_n12_p1312_Moreno
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spelling todo:paper_00029505_v78_n12_p1312_Moreno2023-10-03T13:54:56Z Cooling balloons with liquid nitrogen Moreno, A.J. Ferrari, H. Bekeris, V. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar 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.
format JOUR
author Moreno, A.J.
Ferrari, H.
Bekeris, V.
spellingShingle Moreno, A.J.
Ferrari, H.
Bekeris, V.
Cooling balloons with liquid nitrogen
author_facet Moreno, A.J.
Ferrari, H.
Bekeris, V.
author_sort Moreno, A.J.
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
url http://hdl.handle.net/20.500.12110/paper_00029505_v78_n12_p1312_Moreno
work_keys_str_mv AT morenoaj coolingballoonswithliquidnitrogen
AT ferrarih coolingballoonswithliquidnitrogen
AT bekerisv coolingballoonswithliquidnitrogen
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