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Professor Rogers co-authors "Exploring the thermodynamics of a rubber band" in the American Journal of Physics

Contributed by Jill Ackerman on 01/24/13 

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Exploring the thermodynamics of a rubber band

 

David Roundy
Department of Physics, Oregon State University, Corvallis, Oregon 97331

Michael Rogers
Department of Physics, Ithaca College, Ithaca, New York 14850 

 

We describe an upper-division experiment in thermal physics where students measure the tension of a rubber band as a function of temperature and length and use a Maxwell relation to find the change in internal energy and entropy for an isothermal stretch. This allows students to experimentally check the predictions of the entropic spring model for elastomers and observe that the entropy does indeed decrease as a rubber band is stretched.

Am. J. Phys. 81 (1), January 2013

Topic: Archive
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