Hugo Gernsback, The Isolator: Science and Invention (American Physical Society), 1925.
magictransistor reblogged
The Isolator (Invented by science fiction pioneer Hugi Gernsbeck), 1925.
Hugo Gernsback, The Isolator: Science and Invention (American Physical Society), 1925.
The Isolator (Invented by science fiction pioneer Hugi Gernsbeck), 1925.