Alexander Stepanovich Popov (Russian: Александр Степанович Попов) (March 16 [O.S. March 4] 1859 – January 13 [O.S. December 31, 1905] 1906) was a Russianphysicist and inventor who first showed how to use electromagnetic (radio) waves,[1] although he did not apply for a patent for his invention.