SOFF X · AIHujjatingizni AI yaratsinSovg'ani olingMahsulot tavsifi
The first electromagnetic telegraph was invented by P. L. Schilling in 1832. Radio, invented by A. S. Popov in 1895, uses electromagnetic waves for wireless signal transmission
#radio#a. s. popov#morse code#electromagnetic telegraph#p. l. schilling
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