Article ID: CBB739783461

Absorbing the arrow of electromagnetic radiation (2023)

unapi

We argue that the asymmetry between diverging and converging electromagnetic waves is just one of many asymmetries in observed phenomena that can be explained by a past hypothesis and statistical postulate (together assigning probabilities to different states of matter and field in the early universe). The arrow of electromagnetic radiation is thus absorbed into a broader account of temporal asymmetries in nature. We give an accessible introduction to the problem of explaining the arrow of radiation and compare our preferred strategy for explaining the arrow to three alternatives: (i) modifying the laws of electromagnetism by adding a radiation condition requiring that electromagnetic fields always be attributable to past sources, (ii) removing electromagnetic fields and having particles interact directly with one another through retarded action-at-a-distance, (iii) adopting the Wheeler-Feynman approach and having particles interact directly through half-retarded half-advanced action-at-a-distance. In addition to the asymmetry between diverging and converging waves, we also consider the related asymmetry of radiation reaction.

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Authors & Contributors
Chen, Xiang
Bauer, Henry H.
Boumans, Marcel
Dawid, Richard
Fano, Vincenzo
Fitelson, Branden
Journals
Studies in History and Philosophy of Science
British Journal for the Philosophy of Science
Philosophy of Science
Almagest
Archives Internationales d'Histoire des Sciences
Éndoxa
Publishers
Oxford University Press
Concepts
Philosophy of science
Observation
Explanation; hypotheses; theories
Epistemology
Probability and statistics
Cosmology
People
Bayes, Thomas
Boyle, Robert
Cassirer, Ernst
Fraassen, Bas C. van
Fresnel, Augustin Jean
Galilei, Galileo
Time Periods
17th century
18th century
19th century
20th century
21st century
20th century, early
Places
Portugal
England
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