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Keywords from Image Description:
Kundt's tube SE.svg en Kundt's tube schematic de Schematische Darstellung des Kundtschen Staubrohres Kundt'stubeDE svg UTC derivative work Pieter Kuiper talk Kundt'stubeDE svg Cepheiden translation to Swedish Pieter Kuiper Kundt'stubeDE svg de Schematische Darstellung des Kundtschen Staubrohres Eigenes Werk own work Cepheiden