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Published online by Cambridge University Press: 01 January 2022
David Malament has recently responded to David Albert's argument that classical electrodynamics is not time-reversal invariant by introducing a novel conception of time reversal, which supports the conventional view that under time reversal the magnetic field changes sign but the electric field remains unchanged. I will argue here that Malament's transformation has both passive and active versions. I will claim that the passive version is not relevant to Albert's argument, and the active version does not lead to the conventional transformation.
This article grew out of comments on a very interesting paper by Jill North, presented at the Pacific APA meetings in March 2006. I would like to thank Jill for getting me interested in the subject in the first place and for helpful discussions thereafter.
