Boris Borisovich Galitzine
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Prince Boris Borisovich Galitzine (b. St. Petersburg, February 18 (O.S.) or March 2 (N.S.), 1862; d. near Petrograd, May 4 (O.S.) or May 17 (N.S.), 1916) was a prominent Russian physicist who invented the first electromagnetic seismograph in 1906. He belonged to the Galitzine family, one of the leading noble houses of Imperial Russia.