About the book: 1954 / Vladimir Ivanovich Nemtsov - the oldest Soviet science fiction writer. His works are devoted to the problems of the development of physics, space exploration, and the energy of the future. In addition to scientific problems, the author also solves moral problems, in particular the clash between true, real Soviet scientists and engineers with pseudoscientists and with people “temporarily registered” in our society. The collection includes the science fiction stories “The Shadow Under the Ground” and “The SL Apparatus-1».