Boris Borisovich Golitsyn
Prince Boris Borisovich Golitsyn (Russian: Борис Борисович Голицын, 2 March [O.S. 18 February] 1862 – 17 May [O.S. 4 May] 1916) was a prominent Russian Empire physicist who invented the first electromagnetic seismograph in 1906. He was one of the founders of modern seismology.
Source: Wikipedia — Boris Borisovich Golitsyn (CC BY-SA 4.0)