On the addition of velocities in the theory of relativity
Presented in translation from the German is Arnold
Sommerfeld’s paper “Über die Zusammensetzung der Geschwindigkeiten in der Relativtheorie”, Physikalische Zeitschrift 10 826 (1909), which retains its relevance a hundred years after
its publication, as is discussed by G B Malykin, Usp. Fiz. Nauk 180 965 (2010) [Physics-Uspekhi 53 (9) 923 (2010)].
Arnold Sommerfeld’s article “Über die Zusammensetzung der
Geschwindigkeiten in der Relativtheorie” was sent by the author in 1909
simultaneously to two journals with the goal of reaching a wider scientific
community, in full agreement with the practice accepted at that time, and
was published almost simultaneously in Physikalische Zeitschrift [10 826 (1909)] and Verhandlungen der Deutschen Physikalischen Gesellschaft [11 557 (1909)].