Meitner–Hupfeld effect
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The Meitner–Hupfeld effect, named after Lise Meitner and Hans-Hermann Hupfeld, is an anomalously large scattering of gamma rays by heavy elements. The effect was later explained by a broad theory from which evolved the Standard Model, a theory for explaining the structure of the atomic nucleus. The anomalous gamma-ray behaviour was eventually ascribed to electron–positron pair production and annihilation.
Although Meitner was recognised for her work,[1] Hupfeld's contribution is largely ignored, and little or no account of his life exists.
