Wegener ndiye akatanga kushandisa mashoko ekuti "continental drift" (1912, 1915) (muchiGerman "die Verschiebung der Kontinente" <unk> yakashandurwa muChirungu muna 1922) uye akaburitsa zviri pamutemo fungidziro yekuti makondinendi aive neimwe nzira "akadzungaira" kure. Kunyangwe akapa humbowo hwakawanda hwekudonha kwemakondinendi, akatadza kupa tsananguro inogutsa yemaitiro epanyama angave akakonzera kudzungaira uku. Zano rake rekuti makondinendi akange adonhedzwa kure necentrifugal pseudoforce (Polflucht) yekutenderera kwePasi kana nechinhu chidiki cheastronomical precession chakarambwa, sezvo kuverenga kwakaratidza kuti simba iri rakanga risina kukwana.
Paul Sophus Epstein