Dictionary:eta, η

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Warning: Display title "Dictionary:eta, η" overrides earlier display title "Dictionary:Eta, η".{{#category_index:E|eta, η}} 1. Electric susceptibility (q.v.).

2. One of the Thomsen anisotropic parameters (q.v.) that captures the deviation of long-offset P-wave moveout from what it would have been for isotropicity:


where (delta) and are the other Thomsen anisotropic parameters.