拉尔夫·克勒尼希(德語:RalphKronig,1904年3月10日—1995年11月16日),德国/美国物理学家。克勒尼希因发现粒子的自旋和x-射线吸收谱理论而知名。他提出了克勒尼希–宾尼模型,科斯特–克勒尼希转变和克喇末–克勒尼希关系。 Correspondence with Niels Bohr
Earlier the same year, RalphKronig discussed the idea with Wolfgang Pauli, but Pauli criticized the idea so severely that Kronig decided not to publish
relations—like those discovered by Hendrik Kramers and RalphKronig in the 1920s (see Kramers–Kronig relations)—allow the formulation of a notion of causality