Ralph 124C 41+, by Hugo Gernsback, is an early science fiction novel, written as a twelve-part serial in Modern Electrics magazine, which Gernsback edited, beginning in April 1911. It was compiled into novel/book form in 1925. While it pioneered many ideas found in later science fiction, it has been critically panned for its "inept writing". The title itself is a play on words ( 1 2 4 C 4 1 + ), meaning "One to foresee for one another". In the introduction to the first volume of Science-Fiction Plus, dated March 1953, Gernsback called for patent reform to give science fiction authors the right to create patents for ideas without having patent models because many of their ideas predated the technical progress needed to develop specifications for their ideas. The introduction referenced the numerous prescient technologies described throughout Ralph 124C 41+.

The eponymous protagonist saves the life of the heroine by directing energy remotely at an approaching avalanche. As the novel goes on, he describes the technological wonders of the modern world, frequently using the phrase "As you know..." The hero finally rescues the heroine by travelling into space on his own "space flyer" to rescue her from the villain's clutches.