RT Journal Article T1 Variations on the adiabatic invariance: the Lorentz pendulum A1 Sánchez Soto, Luis Lorenzo A1 Zoido Chamorro, Jesús Manuel AB We analyze a very simple variant of the Lorentz pendulum, in which the length is varied exponentially, instead of uniformly, as it is assumed in the standard case. We establish quantitative criteria for the condition of adiabatic changes in both pendula and put in evidence their substantially different physical behavior with regard to adiabatic invariance. PB American Association of Physics Teachers SN 0002-9505 YR 2012 FD 2012-12-20 LK https://hdl.handle.net/20.500.14352/42791 UL https://hdl.handle.net/20.500.14352/42791 LA eng NO Published Online: December 2012 Accepted: October 2012This paper is dedicated to the memory of coauthor Jesús Zoido, who unexpectedly passed away during the preparation of the final version. NO Ministerio de Economía y Competitividad (MINECO) NO Universidad Complutense de Madrid/BSCH DS Docta Complutense RD 8 abr 2025