The English version of the title of this thesis is On Electrodynamics of Moving Objects, which appears in the English version of Principles of Relativity, published by London Methuen and Company, Ltd. at 1923. The English translation papers of this book are mainly translated by W. Perrett and G.B. Jeffery, and are translated from German Das Relativatsprinzip, 4th edition. , 1922 published by Tuebner.