EntityQ649478· pop 6· linked from 8 articlesEikonal approximationSign in to savemethod of approximation useful in wave scattering equationsConnectionsGreekEntityquantum mechanicsEntityopticsEntitydifferential equationEntitydigital object identifierEntityseismologyEntitytheoretical physicsEntitySchrödinger equationEntitywave functionEntitybibcodeEntityquantum electrodynamicsEntitypower seriesEntityscatteringEntityactionEntityprinciple of least actionEntitycorrespondence principleEntityboundary value problemEntityWKB approximationEntityscattering amplitudeEntityEikonal equationEntityCategoriesMathematical analysisTheoretical physics