and the first theoretical discussion of the effect.. Podobna, teoretyczna analiza zjawiska skurczu w płynnym metalu została opublikowana przez Northruppa w 1907Northrupp E F 1907 "Some Newly Observed Manifestations of Forces in the Interior of an Electric Conductor" (1907) Phys. Rev. 24 474. He wrote: "Some months ago, my friend, Carl Hering, described to me a surprising and apparently new phenomenon which he had observed. He found, in passing a relatively large alternating current through a non-electrolytic, liquid conductor contained in a trough, that the liquid contracted in cross-section and flowed up hill lengthwise of the trough... Mr. Hering suggested the idea that this contraction was probably due to the elastic action of the lines of magnetic force which encircle the conductor... As the action of the forces on the conductor is to squeeze or pinch it, he jocosely called it the 'pinch phenomenon'.. Następnym kamieniem milowym była publikacja przez Willarda Bennetta w 1934 roku analizy radialnej równowagi ciśnienia w statycznym skurczu osiowymW.H.Bennett, "Magnetically Self-Focussing Streams", Phys. Rev. 45 890 (1934).