An English translation of the paper of Max Planck (1943) about “Zur Geschichte der Au ndung des physikalischen Wirkungsquantums: or: :The history of the discovery of the physical quantum of action” to provide a readable version of the German content. . EIJARI [Internet]. 2025 Jan. 16 [cited 2026 May 13];1(1):8-10. Available from: https://innojournals.my.id/index.php/eijari/article/view/7