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https://digital.sciencehistory.org/works/66zwop5/viewer/jitxoow Portrait of Friedrich Kohlrausch - Science History Institute Digital Collections Black and white portrait of Friedrich Kohlrausch (1840 -1910). Kohlrausch was a German experimental physicist who researched electrolytes, elasticity, thermal... science history institutefriedrich kohlrauschdigital collectionsportrait