Fermat's principle of least time predicts refraction of ant trails at substrate borders.

Fermat's principle of least time states that light rays passing through different media follow the fastest (and not the most direct) path between two points, leading to refraction at medium borders. Humans intuitively employ this rule, e.g., when a lifeguard has to infer the fastest way to trav...

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Bibliographic Details
Main Authors: Jan Oettler, Volker S Schmid, Niko Zankl, Olivier Rey, Andreas Dress, Jürgen Heinze
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2013-01-01
Series:PLoS ONE
Online Access:https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23527263/?tool=EBI